AGILE H Series User manual

AVT-UMPM-0100
User Manual
PROTEUS AND H-SERIES
OPERATOR’S MANUAL

AVT-UMPM-0100
User Manual
Version 1.0 - Oct 2019
1
© Agile Vehicle Technologies Ltd
DO NOT REMOVE THIS OPERATOR’S MANUAL FROM THE VEHICLE
READ THIS MANUAL CAREFULLY IT CONTAINS IMPORTANT SAFETY INFORMATION
Your vehicle is inherently stable, however if you fail to take proper precautions a collision or rollover can occur quickly,
even during routine manoeuvres such as turning and driving on hills, over obstacles or while operating in water.
For your safety, understand and follow all the warnings contained in this Operator’s Manual and the labels on your vehicle.
Keep this Operator’s Manual with your vehicle at all times.
FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR
DEATH.
Particularly important information is distinguished in the manual by the following notations:
Warning Labels
On Vehicle
The triangular Safety Alert Symbol means ATTENTION! BE ALERT!
The round Blue Book or Information Symbol means READ THE MANUAL
In-Manual
Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or
a person inspecting or repairing the machine.
A CAUTION indicates special precautions that must be taken to avoid damage to the machine.
An INFORMATION NOTE provides key information to make procedures easier or clearer.
Revision Summary
Date
Detail
31 Jan 2020
Initial Release

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Table of Contents
Warning Labels.....................................................1
On Vehicle............................................................... 1
In-Manual................................................................. 1
B. Introduction.........................................................4
Company and Vehicle Particulars..........................4
Company Contact Details:....................................4
Safety ...................................................................4
Warnings ..............................................................4
Drivers and Passengers........................................... 4
Load Capacity.......................................................... 5
Tyre Pressures ........................................................5
Water....................................................................... 5
Operation................................................................. 5
Vehicle..................................................................... 5
Difficult Terrain.........................................................5
General.....................................................................7
Vehicle Layout......................................................7
General Description..............................................8
Vehicle Identification................................................ 8
Hydrostatic Drive System .....................................8
Vehicle Load Capacities.......................................9
Towing Loads.......................................................... 9
Aluminium Rear Load Bed..................................10
Vehicle Description.............................................11
Mandatory Labels..................................................12
Operating Instructions..........................................13
Precautions.........................................................13
Cabin Layout.......................................................13
Dash Panel and Controls....................................13
Ignition Switch ....................................................... 13
Parking Brake Switch............................................. 13
2-Speed Switch (if fitted)........................................ 13
Throttle Lever ........................................................ 13
Winch Switches ..................................................... 14
Remote Winch Control........................................... 14
Control Levers....................................................... 14
Vehicle Horn.......................................................... 14
Pre–Start Inspection...........................................14
Hydraulic System Overview................................16
Hydraulic Control and Drive System - The Basics.. 16
Two Speed system................................................ 16
Driving Techniques.............................................17
Turning.................................................................. 17
Special Manoeuvres...........................................17
Neutral Turn........................................................... 18
Hill Starts and Stops .............................................. 18
Mound and Boulder crossing ................................. 18
Slope Crossing...................................................... 18
Skidding/Sliding..................................................18
Operation on Hills...............................................18
Climbing a Hill........................................................ 18
Descending a Hill................................................... 19
Traversing a Slope................................................. 19
Driving Over Obstacles.......................................19
Operations in Water and the Littoral...................19
Entering Water.......................................................19
Driving in Shallow Water (Less Than 100mm/4
inches Deep)..........................................................19
Driving in Deep Water (More Than 300mm/12 inches
Deep).....................................................................20
Operation with Tracks installed.......................... 20
Driving in Cold Weather..................................... 20
Driving in Reverse.............................................. 20
Extended Deployed Use.................................... 20
Operating the Winch.......................................... 20
Winch Safety..........................................................21
Staying Safe.......................................................... 22
Prevention is:.........................................................22
Active Driving is: ....................................................22
Sound Judgment is: ...............................................22
Supervision............................................................22
Prevention –Better than a Cure ........................ 23
Clothing .................................................................23
Head Protection.....................................................23
Eye Protection .......................................................23
Arms and Leg Protection........................................23
Gloves ...................................................................23
Boots / Ankle Protection.........................................23
Vehicle Condition...................................................23
Brakes ...................................................................23
Tires and Wheel Rims............................................24
Fluids.....................................................................24
Lights.....................................................................24
Electrical................................................................24
Controls.................................................................24
Chassis/Body.........................................................24
Miscellaneous........................................................24
First Aid and Survival.............................................24
Tools......................................................................24
Water.....................................................................24
Identification...........................................................25
Communications....................................................25
Money....................................................................25
Maps and Navigation Devices................................25
Emergency Kit with Flashlight and First Aid Kit.......25
Active Driving..................................................... 25
Basic Operating Manoeuvres.................................25
Handling the Vehicle..............................................25
The Importance of Sound Judgment ......................28
Personal Choices...................................................29
Supervision........................................................ 29
C. OPERATION - MAINTENANCE........................ 30
Maintenance Schedule......................................... 31
Parts and Accessories......................................... 32
General Information.............................................. 32
Vehicle Reception Process................................ 32
Air Freight..............................................................32
All Freight Types....................................................32
Transporting Your Vehicle ................................. 32
Run-In Procedure............................................... 33
Air Filter.................................................................33
General Maintenance............................................ 33
Personal Protective Equipment.......................... 33

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Maintenance Procedures......................................33
Jacking and Lifting the Vehicle ...........................33
Chain Life ...........................................................34
Chain Adjustment ...............................................34
Chain Drive System............................................34
General Lubrication ............................................34
Chains................................................................... 34
Axle Bearings ........................................................ 34
Engine Oil and Filter.............................................. 34
Hydraulic Fluids..................................................... 35
Hydraulic Fluid....................................................35
Hydraulic Fluid Cleanliness ................................35
Pump Maintenance.............................................35
Hydraulic Pump - Ports.......................................36
Vehicle Recovery Notes........................................36
SB Screw Bypass [Remove Hydrostatic Lock to
Motors]................................................................36
Brake Release....................................................36
Fall-Back Option.................................................37
Engine ................................................................37
Fuel Pipes and Clamp Bands................................. 37
Water Separator (if fitted)....................................... 37
Engine Oil.............................................................. 37
Air Filter................................................................. 37
Oil Filter Cartridge.................................................. 37
Fuel Filter............................................................... 37
Fan Belt................................................................. 37
Radiator Hoses and Clamp Bands......................... 37
Tyres...................................................................37
Tyre Inflation.......................................................... 38
Tyre Pressures ...................................................... 38
Tubeless Tyre Repair............................................. 38
Wheel Removal and Replacement......................... 38
Wind-Up ................................................................ 38
Wheel Geometry –Kick-up.................................... 39
Tyre Placement...................................................... 39
Track Installation.................................................39
Electrical System................................................39
Trouble Shooting...................................................41
Hydraulic Pump ..................................................41
D. WARRANTY.......................................................42
AVT LIMITED CUSTOMER WARRANTY POLICY 42
WARRANTY.......................................................42
Table of Figures
Figure 1. H-Series Cut-Away......................................... 7
Figure 2. Hydrostatic Layout [4 Motor variants].............8
Figure 3. Hydrostatic Layout [2 Motor variants].............8
Figure 4. Real Load Bed Lifted Clear of Cups.............10
Figure 5. Cross Section Showing Pinned Ball and
Socket Mount .............................................................. 10
Figure 6. Ball and Socket Pinning for Tipping.............. 10
Figure 7. Load Bed Moved to Rear for Access............10
Figure 8. H-Series....................................................... 11
Figure 9. Proteus......................................................... 11
Figure 10. Mandatory Labels....................................... 12
Figure 11 Brake Off.....................................................13
Figure 12 Brake On.....................................................13
Figure 13. Winch Remote Control ...............................14
Figure 14. Hansa TPV1500 Tandem Pump................. 16
Figure 15. Radial Drive Motor with Inboard Drive Shaft
....................................................................................16
Figure 16. Slope Angles.............................................. 18
Figure 17. Rear Drains................................................ 26
Figure 18. Maintenance Schedule............................... 31
Figure 19. Jacking Points............................................33
Figure 20. Hydraulic Filters.......................................... 35
Figure 21. Screw Bypass [SB]..................................... 36
Figure 22. Brake release pump on front manifold........ 36
Figure 23. Gen II Motor Brake Release.......................37
Figure 24. 4-Motor variant prepared for towing with
motors braked ............................................................. 37
Figure 25. Tyre Dimensions ........................................38
Figure 26. Kick-up ....................................................... 39
Figure 27. Tyre Placement Table ................................ 39

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B. INTRODUCTION
1. Congratulations and thank you for purchasing one of
our Agile Extreme All-Terrain Vehicles (ATVs).
2. This manual is provided to ensure that the operator is
aware of safe operating procedures. It also includes
information about the general care and maintenance of
your ATV, please read the manual carefully –it contains
guidance and advice that is important for your safety
and others.
3. Carefully read the following pages. If you have any
questions regarding this ATV, contact an authorized
Agile Vehicle Technologies (AVT) dealer or ourselves at
the address below for assistance. Remember, only an
authorized dealer or AVT have the knowledge to provide
you with the best service possible.
4. We advise you to strictly follow the recommended
maintenance program as outlined. This preventive
maintenance program is designed to ensure that all
critical components on this ATV are properly maintained
to ensure vehicle safety and cost-effective operation.
5. All information in this manual is based upon the latest
product data and specifications available at the time of
printing. We reserve the right to make product changes
and improvements which may affect illustrations or
explanations without notice.
Company and Vehicle Particulars
Company Contact Details:
www.agilevt.com
www.agilevt.com/support [online manuals]
[email protected] [email]
Agile Vehicle Technologies Limited
Orchard Cottage, Main Street,
Babcary,
Somerton,
Somerset
TA11 7DZ
UK
Tel: +44 {TBC]
Agile Vehicle Technologies Inc.
303 Industrial Drive
Grand Island NY 14072
USA
Tel: +1 [TBC]
PT Agile Vehicle Technologies Nusantara
Komplek Industri ADR
Desa Kadujaya, Kecamatan gurug
Banten
15810
Indonesia
Tel: [phone]
Safety
6. The specialist drive mechanism associated with skid-
steering means that Agile vehicles handle differently
from other vehicles such as 4-wheeled ATVs and cars.
In the hands of an insufficiently experienced driver or
without due care and attention, manoeuvres that are
well within the capability of the vehicle may become
dangerous in more extreme terrain. It is essential that
drivers are sufficiently well-trained to deal with the types
of terrain in which they will be operating the vehicle.
Warnings
Read this manual and all labels carefully before
using the vehicle and follow the operating
procedures described.
If you did not receive an owner’s manual, please
email us with your vehicle details and one will be
sent at no charge.
Drivers and Passengers
No one under the age of 16 should operate this
vehicle. Some operators at the age of 16 may not
be able to operate an all-terrain vehicle (ATV)
safely. Use of the vehicle should always be
supervised by a responsible adult. Use should be
permitted only if the operator can operate the
vehicle safely.
Always wear the correct Personal Protective
Equipment (PPE).
Do not drink alcohol or take drugs and drive the
vehicle.
Never permit a guest to operate the vehicle unless
they have read this manual and all product labels.
Never carry more passengers than the vehicle is
designed to carry.
Never carry passengers in the cargo area of an
ATV at any time.

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Load Capacity
Never exceed the stated load capacities and
maximum all-up-weights for an ATV. The stated
load capacity on land is different than in water as
described in this manual.
Cargo should be properly distributed and securely
attached. Reduce speed and follow the instructions
in this manual for carrying cargo or pulling a trailer
and allow greater distance for braking.
Tyre Pressures
Tyre pressures are critical for safe handling and
load carrying so always check before driving that
they are set to appropriate pressures for the driving
conditions and load being carried.
Water
Before entering water over 12"/30cm deep ensure
that your drain plugs are properly installed.
Guidance on towing in water goes beyond the
scope of this manual. It should not be attempted by
inexpert users.
Never operate an ATV in rough water or strong
current.
Never operate your vehicle in water unless the
driver and passengers are wearing approved safety
and survival equipment.
Always make sure that you have a paddle when
operating in water.
Always ensure that the driver and passengers
adjust their positions so that the vehicle is floating
level in water.
Always enter the water directly via as gentle a slope
as possible, Head–On, and very slowly.
Operation
Always ensure that driver and passengers fasten
their seat belts.
Always ensure that driver and passengers unfasten
their seat belts when operating in water deeper than
12" /30cm.
Never operate an ATV without wearing an approved
helmet that fits properly. You should also wear eye
protection, gloves, boots and long trousers/sleeves.
Never consume alcohol or drugs before or while
operating an ATV.
Never operate at excessive speeds. Always travel
at a speed which is appropriate to the terrain,
visibility, operating conditions and your experience.
Never attempt jumps and other stunts.
Always keep both hands and feet inside the vehicle
during operation.
Always follow proper procedures for turning as
described in this manual. Practice turning at slow
speeds before attempting to turn at faster speeds.
Do not turn at excessive speed.
Never accelerate suddenly.
Do not use the parking brake to stop the vehicle
Always be sure there are no obstacles or people
behind you when you operate in reverse. When it is
safe to proceed in reverse, go slowly.
Vehicle
Always inspect your ATV prior to use, to ensure it is
in safe operating condition. Always follow the
inspection and maintenance procedures and
schedules described in this manual.
Always have the vehicle inspected by an authorized
dealer if it has been involved in an accident.
Always use the size and type of tires specified in
this manual.
Always maintain proper tire pressure as described
in this manual.
Ensure accessories are correctly installed/fitted.
Only use accessories for their designed/intended
use.
Difficult Terrain
Always go slowly and with care when operating on
unfamiliar terrain. Be alert to changing terrain
conditions when operating the vehicle.
Avoid excessively rough, slippery, or loose terrain.
Be prepared to dismount and check difficult or
potentially dangerous terrain.
Never apply brakes suddenly when travelling down
or traversing a steep decline/slope. If you must
brake when going downhill apply them smoothly
and gradually.
Never operate the vehicle on hills too steep for the
vehicle or for your abilities. Practice on smaller hills
before attempting larger hills.
Always follow proper procedures for climbing hills
as described in this manual. Check the terrain
carefully before you start up any hill.
Never go over the top of any hill at high speed.
Always follow proper procedures for going down
hills and for braking on hills as described in this
manual. Check the terrain carefully before you start
down any hill.
Never go down a hill at high speed.
Avoid going down a hill at an angle which would
cause the vehicle to lean sharply to one side. Go
straight down hills, where possible.
Always follow proper procedures for crossing the
side of a hill as described in this manual.
Avoid hills with slippery or loose surfaces.
Never attempt to turn your vehicle around on any
hill until you have mastered the turning techniques
described in this manual on level ground.
Avoid crossing the side of a steep hill if possible.
Always use proper procedures if you stall or roll
backward when climbing a hill. To avoid stalling,
maintain a steady speed when climbing a hill. If you
stall or roll backwards, follow the special procedure

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for braking described in this manual. Slowly coast
backward using the control levers and to control
your descent.
Always check for obstacles before operating in a
new area.
Never attempt to operate over large obstacles, such
as large rocks or fallen trees.
Always follow proper procedures when operating
over obstacles as described in this manual.
Always be careful of skidding or sliding. On slippery
surfaces, such as ice, go slowly and be very
cautious in order to reduce the chance of losing
control.

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General
Vehicle Layout
7. Agile vehicles have been designed ground up with agile performance and modular reconfigurability in mind. The driver
position is well forward providing the driver with excellent visibility of approaching ground and obstacles, allowing precise
positioning of the vehicle and detailed awareness.
8. Major assemblies are placed centrally and low to achieve optimal stability and balanced handling. Excellent front and
rear access is also achieved.
9. Placing the driver well forward with the engine Central and low releases 75% of the overall vehicle length for load
carrying purposes, this area can be configured in any way required, utilising the hard points and superstructure. Typical
solutions involve load, specialist role equipment and passenger carrying.
10. Drive configuration allows for considerable flexibility in optimisation of tractive effect, control of ground pressure and
transmission mode. Secondary axles can be driven by chain or track or both. The vehicle can be rapidly fitted with full
band or halftracks, allowing the particular benefits of either approach to be exploited where ground conditions and track
stability dictate. Axle sets 2 and 3 (the middle axles) are set lower than axles 1 and 4 (front and rear axles respectively),
reducing ground friction on turns.
Figure 1. H-Series Cut-Away
11. Users are free to use their own tracks if they wish, however AVT provides a number of specialist solutions that are
optimised to the vehicle and to the tyre system providing improved performance. Note that any problems/damage caused
by use of tracks that have not been either sold or approved by AVT is not covered by AVT warranty policy.
12. All AVT variants have a metal superstructure, upon which pre-configured and ad-hoc hard points are provided to
support a wide range of configurations and fitments. The 3D superstructure also provides considerable additional strength

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and stiffness to the robust ladder chassis, improves the robustness and resilience of the plastic body shell and provides a
structural base for roll over protection.
13. Brakes are built into the drive motors -they are immune to external contamination, fade and damage, greatly
simplifying maintenance but more importantly providing a safe, reliable and predictable braking effect.
Figure 2. Hydrostatic Layout [4 Motor variants]
Figure 3. Hydrostatic Layout [2 Motor variants]
14. Directional control is via two compact control levers - the user can choose whether to operate these with one or two
hands. Experienced operators will generally find single-handed operation most straightforward and convenient, releasing
either the left or right hand for other tasks. Alternatively, the vehicle can be operated with two hands.
15. The H84, H82 and Minerva agricultural load-carrying Proetus variants are not designed for amphibious use; they have
no been sealed for such use and are not fitted with safety features such as bilge pumps, do not attempt to float these
vehicles without taking detailed AVT advice on preparation.
Do not attempt to float H84, H82 or Minerva variants without detailed AVT advice.
16. The base Proteus vehicle is designed to be amphibious - it is balanced, sealed and capable of self-propulsion under
specified 'afloat' loads. Pay particular attention to the guidance on amphibious operations; variations from the base
configuration can have significant effects on load capacity and stability.
General Description
Vehicle Identification
17. Agile ATVs have one primary 17-digit Product
Identification Number (PIN) which is attached to the
chassis, and major sub-assemblies such as engine,
hydraulic pump and motors will also have individual
serial numbers attached. These are also recorded on
vehicle documentation.
18. These numbers are required by the dealer to
complete warranty claims properly. No warranty will be
allowed by AVT if the Vehicle or other relevant
identification numbers have been removed or mutilated
in any way.
19. Always provide your vehicle model name, PIN,
Engine Identification Number and hydraulic pump
Identification Number when contacting AVT, a dealer or
an approved supplier for parts, service, accessories, or
warranty.
Hydrostatic Drive System
20. H-Series and Proteus vehicles utilise a closed loop
hydraulic system for transmission and control. The
primary pump is a Hansa TPV unit with augmented
feedback systems to provide an optimised control
response. The default control input is via hydro
mechanical levers that replicate traditional skid steer
tillers, providing optimal intuitive response for this class
of vehicle.. Pressure is generated by a twin pump, with
one pump driving each side of the vehicle.
21. The drive motors are hub mounted and incorporate
internal drive shafts, allowing multiple axles to be driven
from a single motor via chain. Each motor can develop
in excess of 3000 Nm of torque in its low speed setting
and drive at speeds up to 40 kph (25 mph) with 26"
tyres. There are three basic motor configurations; 4-
motor with a motor at each corner wheel station, two
motor front and two motor rear.
22. Hydraulic Reservoir. The hydraulic reservoir
mounted beneath the driver’s seat fulfils a number of
important functions - it provides a working reservoir of
25 ltr of fluid, the unit is baffled to provide an extended
flow path during which fluid mixing can take place,
bubbles can separate, and some cooling can occur.
23. High Pressure Circuits. High pressure flow to each
side is generated by two separate swash-plate
controlled pumps driven at engine revs. The
combination of engine speed and swash plate setting
controlling flow, and resistance to movement reacted
from the ground through the transmission, realises this
as pressure in the high-pressure lines.
24. The swash-plated pumps can generate flow in either
direction seamlessly, allowing full-spectrum control
without gears.
25. On the 4-motor version the two motors on each side
are driven in series, the flow from the pump passing
through the front motor and then the rear motor before
returning to the pump. On two motor variants each pump
drives a single motor and traction is transferred to other
wheel stations via chain.

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26. Charge Pressure Circuit. Charge pressure at 20-25
Bar is used to release parking brakes, provide control
circuit pressure and actuate the two-speed system. The
charge pump draws fluid from the pickup return filter
mounted on the top of the reservoir. Pressure is
generated at port G and then passed into the forward
manifold block where it is managed to provide all
aspects of control.
27. Manifold Control. The forward manifold
incorporates two solenoid-controlled shuttle valves. One
of these dumps charge pressure to tank when
deactivated, which causes the parking brakes to remain
applied and denies control pressure to the control circuit.
This allows the engine to be run without allowing vehicle
movement. When activated charge pressure can build
up in the manifold gallery, releasing the brakes and
actuating the control circuit. The second shuttle valve
directs charge pressure to the motor 2-speed shuttle
valves, switching them to speed 2.
28. Cooling Circuit and Flushing. The cooling circuit is
driven by a gear pump mounted at the front of the main
pump. This draws filtered fluid from the rear of the tank
and thence through the oil cooler, where part of the flow
is tapped off to flush through the motors. The main
return flow enters the reservoir through a return filter, the
primary output of which is directed to feed the charge
pump. The balance of flow returns to the reservoir as
cooled, filtered fluid.
29. Flushing and Drain Circuits. Drain circuits direct
internal leakage and cooling flow back to the front of the
reservoir, where they enter via the front manifold and a
diffuser.
30. Brakes. Hydraulic motors provide two modes of
braking:
a. Hydraulic braking. The closed loop hydraulic
system provides a direct coupling between engine
and drive at a ratio dictated by the position of the
steering levers. When travelling forwards, as the
levers are pulled backwards towards the neutral
position, forward motion is progressively braked, as
the levers reach the neutral point the hydraulic
system is effectively locked out. This is the usual
form of braking, which is implicit in the control of
the vehicle. Similarly in reverse, when the levers
are pushed forwards towards the neutral point
when travelling in reverse, the vehicle is
progressively braked.
b. Parking and Emergency Brakes. Each
hydraulic motor has an integrated brake pack
capable of locking the motor, even under drive.
These are designed for static braking only, they are
applied as a fail-safe if hydraulic pressure is lost,
and automatically when the engine is switched off.
They can also be applied manually using the dash
mounted switch, however never apply the parking
brakes when moving, except in an emergency
situation.
c. Applying the brakes immediately locks the
wheels, negating the control inputs and causing the
vehicle to stop rapidly. Applying these brakes in
motion can damage the motors, each motor has a
lifetime allowance of 10 applications in motion,
following which the brake pack must be replaced.
Never apply the parking brakes when moving,
except in an emergency situation.
Vehicle Load Capacities
31. On-Board Loads. The basic vehicle structure is
immensely strong, with an internal superstructure that
allows considerable weight to be carried without loading
the body-shell. The two main hydrostatic variants are
differentiated by the strength of the rear superstructure
module:
a. Proteus utilizes a lightweight rear superstructure
that is capable of bearing loads up to 1000kg (2205
lbs).
b. By contrast the much heavier H-Series
superstructure is capable of bearing loads in
excess of 2500kg (5512 lbs).
32. In both cases, however, the determination of
maximum safe load will depend on the nature of the
load, its size, its centre of gravity, disposition, security
and the ground –or water –over which it is to be
moved.
33. Whilst other Proteus variants are fully amphibious,
the H8x series is heavier and has not been prepared for
amphibious use. If amphibious use is required then
additional preparations for propulsion, flotation/freeboard
displacement, stability and bilge pumps are required.
Towing Loads
34. Use a trailer and towing equipment that are
compatible to this ATV. Never use a trailer hitch bracket
that provides a trailer coupler location lower than the
centre of the rear wheels.
35. Make sure cargo weight is evenly distributed
between the right and left sides of the trailer and
properly secured.
Make sure that the load in the trailer is properly
secured and will not shift while moving. Also, do not
overload the trailer.
36. When loading a trailer properly, two items are
critical: Gross Trailer Weight and Trailer Tongue Weight.
a. Gross Trailer Weight is the weight of the trailer
plus cargo. Gross Trailer Weight should never
exceed 4000kg (8819 lbs).
b. Trailer Tongue Weight is the downward force
exerted on the hitch by the trailer coupler when the
trailer is fully loaded and the coupler is at its normal
towing height. Approximately 60% of the cargo load
must be located in front of the axle of the trailer.
Spread the cargo in the trailer so the Trailer
Tongue Weight is approximately 10% of the Gross
Trailer Weight.
Always maintain a slow speed when towing a trailer
and avoid sudden accelerations, quick manoeuvres,
and sudden stops. Braking distance will be affected
when towing a trailer. When towing a trailer, always
maintain slow speed and allow longer stopping
distance than when not towing a trailer.

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37. Driving this vehicle without extra caution when
towing a trailer will be hazardous. Trailer towing can
affect handling and braking; tow only at low speeds
(below 16 kph/10 mph). Avoid sudden acceleration and
deceleration of the vehicle. Do not make quick
manoeuvres. Avoid uneven surfaces, steep inclines and
hills. Allow more stopping distance than when not towing
a trailer.
38. Towed Loads. The hydrostatic drive motors on the
2 and 4 motor variants can develop torques in excess of
3000 Nm apiece and are therefore able to develop
massive tractive effort. The maximum load that can be
safely towed will therefore generally be dictated by the
nature of the load itself. As a rule of thumb:
a. Unbraked loads should not exceed the gross
weight of the towing vehicle.
b. Braked loads may exceed the weight of the
towing vehicle but should not exceed 4000kg (8819
lbs).
39. Where heavy loads are to be carried or towed
routinely, we advise the use of bead-locked rims to
ensure that tractive effort is transferred without tyre-rim
slippage.
40. Vehicle weights will depend on the precise
configuration of the vehicle, the base weights are:
a. Proteus: 1100kg (2425 lbs).
b. H-Series: 1300kg (2866 lbs).
Aluminium Rear Load Bed
41. The agricultural load carrying variant will usually be
supplied with an aluminium load bed capably of carrying
2.1T. This may or may not be fitted with a power lifting
ram.
42. The load bed is a modular component, designed to
be readily added to or removed from the vehicle. The
mounting arrangement is simple; six ball joints on the
rear load bed sit in six matching cups and are retained
there with locating pins.
All six load-bed pins must be correctly inserted and
retained by clips to ensure security of the rear load
bed and avoid injury or damage to the vehicle.
Figure 4. Real Load Bed Lifted Clear of Cups
Figure 5. Cross Section Showing Pinned Ball and
Socket Mount
43. The load bed is designed to allow tipping in 3
directions; left, right and rearwards, depending upon
which pins have been removed:
a. To tip left remove pins 1B, 2B, 4B
b. To tip right remove pins 1A, 2A, 4A
c. To tip Rearwards remove pins 1A, 2A, 1B, 2B
Figure 6. Ball and Socket Pinning for Tipping
44. It is also possible to set the load bed towards the
rear for access to drive system components: lift the load
bed and relocate balls 1A and 1B into sockets 2A and
2B. Balls 4A and 4B will sit in sockets 3A and 3B.
Figure 7. Load Bed Moved to Rear for Access

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Vehicle Description
Figure 8. H-Series
Figure 9. Proteus
H-Series
Length 8x8: 3121mm [122.9ins]
Length 6x6: 2432mm [95.7ins]
Width (Body rim): 1675mm [65.9ins]
Load Length: 1864mm [73.4ins]
Load Width: 1788mm [70.4ins]
Ground clearance: 293mm [11.5ins]
Body rim height: 730mm [28.7ins]
Body height: 1068mm [42ins]
ROPS height: 2110mm [83.1ins]
Load Cap Land: 2100kg [4628.4lb]
Load Cap Water: 0kg [0lb]
Towed capacity: 4000kg [8816lb]
Passengers (max): 2pers [2pers]
Fuel inboard: 35L [9.2US Gal]
Hydraulic System: Closed loop
Hydraulic Motors: Radial piston
Steering Transmission: Skid steer - infinitely variable
Steering Control: Control levers
Throttle: Progressive Fixed
Service & Parking Brake: Hydrostatic & internal disk
Chassis: Steel ladder frame
Chain: ANSI 60-2
Body: HDPE
Hydraulic Oil grade: ISO VG 46
Hydraulic Oil capacity: 40L [10.6US Gal]
Speed land: 40kph [24.9mph]
Speed water: 5kph [3.1mph]
Turning Circle: 0m [0ft]
Fording Depth: 0.73m [3.1ft]
Approach angle: 61.8deg
Departure angle: 72.8deg
Under Veh/Breakover angle: 95deg
Stability tilt angle: 58deg
Gap crossing (square ditch): 1.75m
Grade: 30deg [57.7%]
Tyre dia (max): 660.4mm [26ins]
Tyre width (min): 304.8mm [12ins]
Proteus
Length 8x8: 3121mm [122.9ins]
Length 6x6: 2432mm [95.7ins]
Width (Body rim): 1675mm [65.9ins]
Load Length: 2000mm [78.7ins]
Load Width: 1788mm [70.4ins]
Ground clearance: 293mm [11.5ins]
Body rim height: 730mm [28.7ins]
Body height: 1068mm [42ins]
ROPS height: 1879mm [74ins]
Load Cap Land: 1200kg [2644.8lb]
Load Cap Water: 300kg [661.2lb]
Towed capacity: 4000kg [8816lb]
Passengers (max): 8pers [8pers]
Fuel inboard: 35L [9.2US Gal]
Hydraulic System: Closed loop
Hydraulic Motors: Radial piston
Steering Transmission: Skid steer - infinitely variable
Steering Control: Control levers
Throttle: Progressive Fixed
Service & Parking Brake: Hydrostatic & internal disk
Chassis: Steel ladder frame
Chain: ANSI 60-2
Body: HDPE
Hydraulic Oil grade: ISO VG 46
Hydraulic Oil capacity: 40L [10.6US Gal]
Speed land: 40kph [24.9mph]
Speed water: 5kph [3.1mph]
Turning Circle: 0m [0ft]
Fording Depth: 1.068m [4.6ft]
Approach angle: 61.8deg
Departure angle: 72.8deg
Under Veh/Breakover angle: 95deg
Stability tilt angle: 58deg
Gap crossing (square ditch): 1.75m
Grade: 30deg [57.7%]
Tyre dia (max): 660.4mm [26ins]
Tyre width (min): 304.8mm [12ins]

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Hub dia (standard): 304.8mm [12ins]
Weight 8x8 4M: 1300kg [2865.2lb]
Weight 8x8 2M: 1140kg [2512.6lb]
Weight 6x6 2M: 1010kg [2226lb]
Ground pressure (wheels) 4M: 12.74kPa [1.8psi]
Ground pressure (wheels) 2M: 11.172kPa [1.6psi]
Ground pressure (tracks) 4M: 5kPa [0.7psi]
Ground pressure (tracks) 2M: 4.4kPa [0.6psi]
Ground pressure (max AUW wheels): 31.7kPa [4.6psi]
Ground pressure (max AUW tracks): 12kPa [1.7psi]
Max Axle Load: 3500kg [4214lb]
Winch: 1588kg [3500lb]
Tractive force: 9085kgf [89123.9N]
Hub dia (standard): 304.8mm [12ins]
Weight 8x8 4M: 1100kg [2424.4lb]
Weight 8x8 2M: 940kg [2071.8lb]
Weight 6x6 2M: 810kg [1785.2lb]
Ground pressure (wheels) 4M: 10.78kPa [1.6psi]
Ground pressure (wheels) 2M: 9.212kPa [1.3psi]
Ground pressure (tracks) 4M: 4.2kPa [0.6psi]
Ground pressure (tracks) 2M: 3.6kPa [0.5psi]
Ground pressure (max AUW wheels): 20.9kPa [3psi]
Ground pressure (max AUW tracks): 8kPa [1.2psi]
Max Axle Load: 3500kg [4214lb]
Winch: 1588kg [3500lb]
Tractive force: 9085kgf [89123.9N]
Mandatory Labels
Make sure the following labels are attached to the ATV.
Figure 10. Mandatory Labels

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Operating Instructions
Precautions
45. Before driving your vehicle, carefully read,
understand, and observe all the information in Parts A
and B of the manual. Being properly prepared means
safer and more enjoyable operation.
46. Always use Personal Protective Equipment (PPE)
and clothing together with related apparel when
operating an ATV. Recommended items include a
helmet, eye protection, arm and leg protection and
boots.
If your vehicle is equipped with a roll bar or roll
cage----Make sure all occupants put on their seat
belts and adjust them correctly.
Beginners and inexperienced operators must read
and understand this operator’s manual before being
allowed to operate the vehicle
Cabin Layout
47. The cabin is designed to allow the operator to adopt
a variety of positions, novices and individuals who prefer
to use two hands to control the vehicle may choose to sit
astride the steering levers. Alternatively, the operator
may choose to control the vehicle with one hand
manipulating both levers - this is a more advanced skill
but is readily achieved with a small amount of
experience. The operator can sit either to the left or the
right-hand side of the controls according to preference.
48. Primary controls and switches are placed adjacent to
the steering controls - these include the 2-speed switch
(when enabled), horn and throttle. Other controls and
instruments are placed on the dash panel.
Dash Panel and Controls
Ignition Switch
49. The ignition switch is of a standard type, with Pre-
heat, Off, Run and Start positions. Turn the switch
counter-clockwise to the pre-heat position and hold
there for 10 seconds or until the pre-heat light
extinguishes, then start the engine.
Parking Brake Switch
50. The parking brake switch has a red safety guard, the
guard is intended to prevent accidental application of the
parking brake when driving. The switch is located
centrally and low on the dash panel.
a. To apply the parking brake, move the switch to
the ‘up’position and the guard raised.
b. To release the parking brake, move the switch to
the ‘down’ position and close the safety guard.
51. When the parking brake is applied all hydraulic
controls are disabled.
Figure 11 Brake Off
Figure 12 Brake On
The parking brake guard is intended to prevent
accidental application of the parking brake when
driving.
2-Speed Switch (if fitted)
52. The two-speed switch actuates speed 2 on the
motors. The switch is located adjacent to the steering
levers. (refer to paragraphs 81 and 82 later in this
manual for details on switching speeds)
Throttle Lever
53. H-Series variants are fitted with a variable throttle
lever, this provides a high degree of precision control for
engine power and speed settings. The throttle lever is

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mounted adjacent to the steering levers. Moving the
lever forwards increases engine speed.
Winch Switches
54. Two winch switches are mounted on the dash panel,
one isolates the winch (on-off), the other is a 3-position
rocker switch to release or draw in the winch cable.
Remote Winch Control
55. A remote winch control is provided to allow operation
of the winch from a safe distance, with the operator
away from the line of pull, able to see other vehicles or
obstacles more clearly, or where occupation of the cabin
is impractical.
56. The winch remote control can be plugged into the
covered socket on the dash between the MFD and
switch bank.
Figure 13. Winch Remote Control
Control Levers
57. All directional control is made via two centrally
mounted control levers; these provide exact, precision
control over the movement of left and right wheel-sets
respectively. They can be operated using one hand or
two hands according to the preference of the driver. This
allows very precise control of movement and allows
power to be applied precisely and completely
independently to either side of the vehicle.
58. The levers are sprung centrally and when released
will return to the central neutral position, braking and
halting the vehicle in the process.
59. As a lever is moved forwards or backwards from the
neutral position the wheels on that side rotate forwards
or backwards respectively, and at a rate governed by
the distance moved. Power is delivered automatically
up to a maximum level depending on throttle setting.
60. No other controls are necessary to manoeuvre the
vehicle. Gear changes are not necessary and there are
no clutches, brakes, differentials, or CV drives that can
affect driven behaviour of the vehicle.
Vehicle Horn
61. The horn switch is located on the left of the switch
bank.
Pre–Start Inspection
Always inspect the vehicle before it is used to make
sure it is in safe operating condition. Perform the
following checks with the engine off.
62. Control Levers. Check smoothness by moving the
left and right control levers fully backwards and
forwards. Check that there is no binding, restriction,
free-play, or looseness in control levers.
63. Tire/Air Pressure. Check each tire for air pressure,
the required pressure will depend on intended usage but
will normally be within the range 3.5-15 psi. Check that
each tire has no cracks, rips, or other damage. Check
that tread wear is not significant (treads should be at
least 1.5mm or 1/16” deep for safe usage).
64. Fuel. Check the fuel level in the tank from dash
display. Check fuel hoses for any damage and make
sure the fuel filler neck cap is secured. Look for
evidence of fuel leakage in the tub or a strong fuel smell.
Do not refuel the machine with the engine running.
Any spillages should be cleaned up - particularly if
fuel has been allowed to seep into the lower body
tub.
65. Lighting. Check that all lights are working properly.
66. Ignition Switch. Check that the ignition switch
moves freely and smoothly in all positions.
67. Engine Oil. Check the engine oil dipstick for proper
oil level. Add if needed. The recommended engine oil for
your vehicle depends on the type of engine installed into
it. Consult the engine operator’s manual, which is
supplied in addition to this Operator’s Manual. [SAE
15W40]

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68. Hydraulic Oil. The hydraulic fluid reservoir is
located under the driver’s seat in the centre of the
vehicle. The level gauge is on the left side. The
hydraulic fluid level should be checked using the tube
gauge indicator on the side of the hydraulic fluid
reservoir before using the vehicle. Top-up with filtered
fluid as necessary. Check for leaks from pipes and joints
and look out for evidence of hydraulic oil collecting in the
tub.
69. Chain Tensioners. Check that chain tensioners are
in place and correctly seated without signs of damage.
70. Coolant. Check radiator coolant level and if
necessary, top up.
71. General Condition. Check the general condition of
the entire vehicle. There should be no loose
components and no evidence of damage. All fasteners
should be tight and secure.
72. Starting the Engine. To start the engine, use the
following procedure:
a. Perform the Pre-Start Inspection.
b. Ensure that the Parking/Auxiliary Brake is
applied.
c. Test the control levers by pulling back on them
and pushing forward on them. They should feel firm
when they reach the limit of their forward and
backward travel.
d. For diesel units turn the ignition key to the left
(anticlockwise) for 10 sec until the ignition light
extinguishes, then turn the ignition key to the ‘Start’
position; the starter motor will engage. If the
engine does not start within 4 seconds turn off the
ignition, wait for 2 minutes and repeat.
e. If the engine does not start after 5 attempts leave
for 15 minutes and then try again. If it still fails to
start further diagnostic will be necessary (see
engine manual).
Do not start the engine if the brake systems are not
functioning properly (if the parking brake and control
levers do not have proper travel or correct feel), or if
the Parking/Auxiliary Brake does not lock the
wheels have the motors overhauled by an AVT
approved engineer prior to operating the vehicle.
Serious personal injury or even death may occur if
the brake systems are not operating properly.
If the throttle control lever does not function
properly, DO NOT ATTEMPT TO START THE
ENGINE.
It is important that the engine is properly warmed up
before subjecting the engine to high RPM operation
or heavy loads. The engine should be allowed to
idle for 3-4 minutes before it is operated at more
than ½ throttle. In cold conditions, the warm-up time
will be longer. Damage caused by insufficient warm-
up will not be covered by warranty.
Never carry more passengers than the vehicle is
configured to safely accommodate.
Avoid operating the vehicle on dry paved surfaces
including sidewalks, driveways, parking lots, and
streets for extended periods of time - hard dry
surfaces will increase the rate of tyre/track wear.
73. After making sure that the engine is warm, release
handbrake or Auxiliary Brake to automatically release its
locking mechanism
74. Braking. When operating the vehicle, keep in mind
that the main braking system is hand controlled via the
steering levers. Its effectiveness relies on proper
operation of the Transmission and the chains and
sprockets. If the Transmission does not have the proper
amount and type of fluid it may fail causing the main
braking system to be inoperable. The same is true if the
chains are worn or not adjusted properly. If the main
braking system does fail you will lose steering control,
however the Parking/Auxiliary Brake system will provide
adequate braking and should be used if the main
braking system fails.
Make sure the chains are adjusted properly. If they
aren’t, the main braking system may fail, causing
the main braking system to be inoperable.
If your vehicle is in a turn or on a hill the brakes
should be used with caution so that the vehicle
does not overturn.
Make sure the Transmission has the proper type
and amount of fluid in it.
The parking brake switch should only be used to
stop the vehicle in an emergency. Multiple
application of the parking brake when in motion will
degrade the internal brake packs, causing damage
that will invalidate the motor warranty.
75. To stop the vehicle, apply braking using the control
levers by easing the levers toward the central neutral
position. In the case of an emergency (control lever
malfunction) use the emergency/parking brake.

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Hydraulic System Overview
76. In order to get the best from the Agile hydrostatic
system it is helpful to understand the basic principles of
how it works.
Hydraulic Control and Drive System - The Basics
77. The heart of the hydrostatic system is the pump, or
in this case a tandem pump, one for each side of the
vehicle. Each rotation of the pumps will deliver a
measured volume of hydraulic fluid to the motors on one
side.
Figure 14. Hansa TPV1500 Tandem Pump
The radial motors are fixed displacement units and will
rotate at a speed that depends on the flow of fluid from
the pump. But the amount of fluid pumped by each can
be adjusted using a swash plate attached to the control
levers.
.
Figure 15. Radial Drive Motor with Inboard Drive Shaft
78. As a control lever is pushed forward the pump on
that side will progressively increase the pumped volume,
hence making the wheels rotate more quickly. The effect
is rather like changing up a gear, this is an important
point to understand, more of which later. Bear in mind
that the engine must now work harder to pump
additional fluid and make the vehicle go faster.
79. Similarly, if the lever is pulled backwards past the
neutral point, the direction of pumped flow is reversed
and the wheels on that side turn backwards. Vehicle
direction is reverse when both control levers are moved
backward past the neutral point.
80. As the engine speed is increased, so the pumps turn
more quickly, the hydraulic fluid flow rate increases
accordingly, and the motors turn more quickly. With the
engine at maximum revs and the pumps at maximum
displacement we achieve the maximum hydraulic fluid
flow rate driving the motors and wheels at their
maximum speed.
81. So as a lever is moved, say, from fully forwards to
fully backwards, the wheels will initially rotate forward at
a rate dictated by the product of the engine speed and
the maximum displacement of the pump, then gradually
slow as the control lever approaches its neutral position
and begin to rotate in reverse as the lever is pulled
further backwards, until maximum reverse speed is
achieved with the lever fully to the rear.
82. How does this affect the way we drive? The feature
that will catch out most new drivers is what to do when
you attempt to climb a steep bank or hill; the natural
inclination is to push the sticks forward, however
pushing the stick forward has an affect akin to changing
up a gear and will likely as not cause the vehicle to stall
if the engine throttle setting is not high enough. The
correct approach is to move the throttle forward to
increase available power and ease back gently on the
control levers as you begin to climb. The further back
the levers are pulled towards the neutral point, the lower
the effective gear.
83. The other advantage of this arrangement is the
precision of braking effect and control. Pulling the levers
backwards causes the wheels to be braked by the
precise amount required and the braking effect becomes
progressively stronger as the levers approach the
neutral position. When at the neutral position, the
wheels are hydraulically locked.
84. This makes it possible to stop precisely where and
when required, and to resume movement and
manoeuvre exactly as required without the risk of loss of
tractive effect associated with differentials, clutches or
disk brakes.
85. This arrangement gives you great precision of
control under all circumstances, it is inherently safer and
more flexible than can be achieved with mechanically
driven systems.
86. Whilst the explanation may seem long winded, the
effect is a highly intuitive, precise and agile control
system that is capable of handling great torque and
power with immense precision.
Two Speed system
87. The hydraulic motors can operate in two speed
ranges - speed 1 will be used in most circumstances,
providing the best balance between precision and
power. Speed 2 can be viewed as being akin to
overdrive, when selected the wheels will double their
speed for a given rate of pumped hydraulic fluid, causing
the vehicle to move more quickly. Useful in particular for
high speed transit over level terrain.
88. Some care is necessary in switching between
speeds, if undertaken without due attention to speed
and engine power setting the vehicle can lurch
uncomfortably. Practice the use of switching between
speed 1 and 2 under different load and speed
conditions, but it is usually more comfortable to reduce
vehicle and engine speed as much as possible before
switching up or down.
89. If the vehicle is lightly loaded it can be driven forward
in speed 2 from a standing start. However, avoid
reversing or undertaking severe steering manoeuvres
from a standing start in speed 2.

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Driving Techniques
90. The following is a summary of important driving
techniques. For additional detail, refer to the Safety
Section, Active Driving. Steering Controls
91. The compact, centrally-mounted steering controls
provide a range of options for the driver:
a. Two handed control. Less experienced drivers
will generally start by sitting astride the control and
operating them with two hands, one on the left tiller
and the other on the right,
b. Single-Handed Control. Most experienced
drivers prefer to control the vehicle with one hand.
The steering levers can be easily manipulated with
just one hand to achieve the full range of
manoeuvrability. The driver can sit on the right or
the left of the controls depending on which hand
they prefer to use to control the vehicle.
Turning
92. To turn the vehicle, the driver must use the correct
technique. Because this vehicle uses a specialized
Transmission, the left and right wheels are controlled
independently. The wheels on the left-hand side are
controlled by the left control lever. The wheels on the
right-hand side are controlled by the right control lever.
In order for your vehicle to turn, the wheels on the inside
of the turn must slow down relative to the wheels on the
outside of the turn. When moving Forward, the driver
must ease back on the control lever on the same side as
the inside of the turn and keep the other control lever
further forward. In order for this to happen when in
Reverse the driver must push forward on the control
lever on the same side as the inside of the turn and
ease the other control lever backward.
93. Maintain a steady engine speed. Turns will be
smoother if you maintain a steady power setting,
however for slower or tighter turns you will generall need
to increase engine power slightly.
The turning procedure when in Reverse Gear is
different than when in Forward Gear. The control
levers will provide braking when eased backwards
when in Forward Gear, however when in Reverse
Gear the control levers must be eased forward to
provide braking.
94. To turn the vehicle in Forward Gear use the
following technique:
a. Ease off engine speed as you approach the turn
to slow down.
b. Ease back gently on the control lever appropriate
for the direction you are turning. (Pull back the left
control lever to turn left and the right control lever to
turn right)
c. Maintain a steady engine speed. Turns will be
smoother if you maintain a steady engine speed
(though at slow speeds or on tight turns, increase it
slightly) when you ease back on one of the control
levers. Additional engine speed enables you to
“power” through turns.
d. For sharper turns additional engine power will
usually be desirable, so increase engine revs as
you begin the manoeuvre.
e. Gradually increase your speed as you come out
of the turn and ease the control lever forward.
f. If the vehicle starts to tip or slip while turning,
reduce the engine speed and make the turn wider.
95. Turns from a standing start in forward gear are
possible using the following technique:
96. Increase engine revs.
97. Ease back the lever on the inside of the turn all the
way back and forward on the control lever on the outside
of the turn.
98. To turn the vehicle in reverse, use the following
technique:
a. Ease off engine speed as you approach the turn
to slow down.
b. Ease forward gently on the control lever
appropriate for the direction you are turning. (Push
the left control lever to turn left and the right control
lever to turn right)
c. Maintain a steady engine speed. Turns will be
smoother if you maintain a steady engine speed (or
at slow speeds and on tight turnsincrease it slightly)
when you push forward on one of the control
levers. Engine speed enables you to “power”
through turns.
d. If your vehicle starts to tip or slip while turning,
reduce the engine speed by either reducing revs or
easing back on the sticks and make the turn wider.
99. Turns from a standing start in reverse are possible
using the following technique:
a. Ease forward on the control lever on the inside of
the turn and back on the control lever on the
outside of the turn whilst advancing the throttle
gently.
Special Manoeuvres
100. The simplicity and precision of control allows for
great sophistication of manoeuvre as drivers become
more experienced, greatly exceeding that possible with
a mechanical transmission.
101. Some basic manoeuvres that users may wish to
attempt are described below. Attempt them initially with
low engine revs to gauge control input and response.
When confident, use slightly higher revs to increase the
power available and gauge the effect on control input
and response.

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Figure 16. Slope Angles
Neutral Turn
102. The basis of this manoeuvre is to cause the wheels
on opposite sides of the vehicle to rotate in opposite
directions. If the wheels rotate at a similar speed, then
the vehicle will spin on the spot about its centre.
Reversing the direction of sticks causes the same effect
in the opposite direction. This manoeuvre on its own is
extremely useful when changing direction in a tight
space, whether on land or afloat. However, variations on
the manoeuvre, with one stick moved further than the
other allow a range of finely controlled turns to be made.
This mode of turning can also reduce the degree of
ground friction associated with skid steer turning,
minimising wear and tear on tyres and reducing the
energy required to turn.
103. You will find that you need higher revs to
successfully complete this manoeuvre, however it will
generally be possible to complete it successfully at lower
power settings provided stick displacement is kept small
and the vehicle turned slowly.
Hill Starts and Stops
104. The vehicle can be brought to a precise and
complete stop even on the most difficult of slopes,
allowing time to observe, assess and manoeuvre without
the inherent challenges of other drive systems. Select
an uphill slope that you are comfortable with, approach it
square on, and part way up the slope ease back in the
steering until the controls are in the neutral position and
the vehicle has stopped. Now gently ease the sticks
forward until the vehicle starts to move again. Turn
around and repeat this exercise going downhill, this time
also attempting to reverse back up the hill.
Mound and Boulder crossing
105. In the first instance identify a mound that is
relatively narrow compared to the length of the vehicle,
say 1m (approx. 3 feet) or so across and 30-40cm (12-
16in) high. Drive the vehicle onto the mound so that it is
balanced on wheels 2 and 3 (the two centre tyres on the
8x8 model). Now gently ease the vehicle forward slowly
so that the nose dips towards the ground on the far side.
Slowly continue the manoeuvre until the front wheels
gently touch the ground, leaning forward as you do so,
so that you can observe the ground immediately in front
of you.
106. When you have touched the ground, stop and then
gently reverse so that the vehicle climbs back up the
mound and then ease it backwards until the rear wheels
contact the ground. Experiment with control in this
situation to get a feel for how the vehicle responds to
your inputs. This precision of manoeuvre is particularly
important when crossing difficult obstacle fields, allowing
you to approach drop-offs closely without committing,
observe ground conditions beyond and then back off if
appropriate, safely and under seamless control.
Slope Crossing
107. Crossing slopes should be avoided whenever
possible, however sometimes it is necessary to extricate
ones-self from a difficult or dangerous situation. In these
cases, it is important that you understand how the
vehicle will behave. Identify a bank with a side slope of
between 10-15 deg, measure it if you can using a level
gauge or phone app. With the vehicle unloaded,
approach the bank edge-on with the bank on the driver's
side. Gently ease the vehicle forward and up the bank
so that the vehicle begins to tilt sideways. Continue until
the lower wheels are on the bottom of the slope. Stop
and get a feel for the angle. Apply the parking brake
and climb out of the vehicle on the uphill side, then
gently rock the vehicle sideways from the uphill side to
gauge the stability of the vehicle.
108. On a 15 deg slope the vehicle should feel rock
solid. Now practice a manoeuvre to achieve a safer
orientation, with the nose of the vehicle pointing directly
up the slope.
a. Re-enter the vehicle and gently conduct a
neutral turn, with the up-slope wheels turning
backwards and the downhill wheels forwards until
the vehicle is pointed up the slope.
b. Now proceed either up or down the slope as you
prefer.
109. As you gain confidence and begin to test the
limitations of the vehicle and develop your own
capabilities you can repeat this on steeper slopes,
though not exceeding 30 deg, beyond which engine oil
starvation may occur.
Skidding/Sliding
110. Skidding - To overcome skidding when braking,
follow this technique: Adjust the speed of the wheels to
match the speed of travel using the steering levers until
tyres stop skidding and you regain control. Then gently
push/pull the levers to engage the hydraulic drive to
steer the vehicle.
111. Sliding - To overcome sliding when turning, use the
following technique:
a. Turn into the slide.
b. Maintain a steady engine speed.
c. Resume your course as soon as the vehicle
straightens out.
Operation on Hills
Never operate on hills too steep for the vehicle or
for operator abilities. Practice on smaller hills before
trying larger hills.
Do not operate on angles greater than 30 degrees.
Climbing a Hill
112. To climb a hill front-on, use the following technique:

AVT-UMPM-0100
User Manual
Version 1.0 - Oct 2019
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© Agile Vehicle Technologies Ltd
a. Approach the hill at a slow and cautious pace.
b. Ease back on the levers as you begin to climb
and if necessary, increase engine speed.
Remember that easing back on the levers has the
effect of shifting to a lower gear ratio for increased
climbing power.
c. Maintain a steady pace during climb.
d. Slow down when approaching the top.
e. If the vehicle loses forward momentum, ease
back on the control levers and stop the vehicle.
f. If the terrain allows turn around or allows the
vehicle to reverse down the hill slowly, keep in
mind that you can stop the vehicle by pushing
forwards on the control levers.
Descending a Hill
113. To descend a hill in Forward gear, use the following
technique:
a. Check the terrain carefully for any obstacles
before starting down the hill.
b. Point straight downhill.
c. Start down the hill and use hydraulic braking to
maintain descent at a slow speed.
d. Avoid going down a hill at an angle that would
cause the vehicle to lean sharply to one side. Go
straight down a hill whenever possible.
Traversing a Slope
114. To traverse a slope, use the following technique:
a. Keep your speed slow and consistent.
b. Steer slightly uphill, if necessary, to maintain a
straight course.
Driving Over Obstacles
115. If an obstacle cannot be avoided, use the following
technique:
a. With the obstacle straight in front, approach at
slow speed.
b. Move slowly straight ahead until your front tires
touch it.
c. Increase throttle pressure and keep it steady
until you are up and over it.
Some obstacles are too high for an ATV or for the
operator abilities. If not sure about safely crossing
an obstacle, find another path that you feel is safer.
Operations in Water and the Littoral
116. The base Proteus vehicle is amphibious by design
and can float and self-propel without preparation other
than installing the drain plugs. However the H84 and
H82 [Minerva] variants are not amphibious, the
instructions in this section are not applicable to these
variants.
117. However, operations between land and water and
whilst afloat are inherently more challenging than
operations on land alone. Extra care should be taken
when preparing for operations on or near water.
118. Some general rules:
If seat belts are fitted, they should be removed by
all occupants prior to entering water.
Occupants should wear approved buoyancy aids.
Ensure that loads are evenly distributed as low as
possible and properly secured. Loads should not
exceed safe limits.
Avoid operations in strong currents or high winds.
The vehicle can make headway of 3 to 6 kmh in still
water.
When crossing large bodies of water stay close to
the edge wherever possible. Be prepared to head
for safer waters if conditions change or a leak is
detected.
Plan for difficulties. Carry a paddle. If the vehicle
does not have bilge pumps fitted carry a bucket or
bailing cannister.
Ensure that drain plugs are fitted and that the lower
body has not been punctured
Under no circumstances should you operate an
ATV in frozen or open waters with a snow plow
attached.
Before and after operations in water check outboard
bearing seal integrity and gaskets. Ensure that
bearing housings are fully greased.
119. Hydrostatic Skid Steer Transmission braking
systems are not affected by water use, and the control
levers will still operate normally, even if there is water
inside the vehicle.
Entering Water
120. Always seek a gently sloping entry wherever
possible. When entering water do so square on. If the
front is more heavily loaded than the rear, then consider
entering deep water rearwards to avoid the risk of
breaching the rim and taking on water.
121. When entering calm water, drive slowly and steady,
only enter water at an angle of 25 degrees or less to
make sure you do not allow water to flow into the
vehicle. Do not operate in waters with a current, or open
water such as large lakes and oceans.
Smaller tyres will reduce the overall buoyancy of the
vehicle.
Do not allow the vehicle to remain in water for
extended periods of time. Gradual ingress will
damage bearings and initiate corrosion. Always
check integrity of seals for ingress following longer
periods of use in water.
Driving in Shallow Water (Less Than 100mm/4
inches Deep)
122. When driving in water less than 100mm/4” deep,
use the following technique:
a. Proceed at a slow cautious pace.
b. Continue at a slow pace.
c. If you contact an obstacle, back up and try to find
another way around it.
d. If you must pass over the obstacle you should go
forward until your front tires touch it.
e. Then you should increase the throttle slightly
until you are over it.