Avantco 423 User manual

English
Operator’s Manual
2019-
423
A428526 2019 6 EN 2018-
Read this Operator’s Manual, safety decals,
and other safety related instructions before
operating the loader. If you do not obey these
instructions, there is a risk of serious injury.
Keep all manuals for reference.

2
400 Series
TABLE OF CONTENTS
Original instructions
Table of contents
Introduction..................................................................3
Safety instructions.........................................................4
Intended use............................................................4
Safety first...............................................................5
Handling of heavy loads...........................................6
Operation on gradients............................................8
Personal safety and protective equipment..............9
Safety frame (ROPS) and safety canopy (FOPS)......9
Electric system and handling the battery................10
Fire prevention......................................................10
Warranty...................................................................11
Description of the loader.............................................13
Loader identification..............................................13
Engine identification..............................................13
Main parts of the loader..........................................14
Signs and decals......................................................15
Technical specification...........................................19
Engine specification...............................................20
Fuel requirements.................................................20
Engine oil requirements........................................20
Tires....................................................................20
Auxiliary hydraulics oil flow....................................21
Tipping load..................................................................22
Tipping load..........................................................22
Load diagram.........................................................22
Rated operating capacity........................................23
Operating instructions................................................24
Operating controls................................................24
Control of loader boom, auxiliary
hydraulics and other functions...............................25
Dashboard.............................................................26
Indicator lights.......................................................26
Seat belt and seat adjustments................................27
Battery disconnect switch.....................................28
Controls in the footwell........................................28
Installing of service support and frame lock..........28
Drive release valve.................................................29
Parking brake handle.............................................29
Anti slip valve.........................................................29
Loader control.......................................................30
Telescopic boom...................................................30
Boom floating........................................................30
Tilt adapter............................................................31
Using the auxiliary hydraulics................................32
Joystick with auxiliary hydraulics control buttons...32
Attachment control switch pack...........................32
Extra auxiliary hydraulics outlets, front and rear.....33
Cab L.....................................................................33
Work light kit........................................................34
Headlight, beacon, blinker & reflector kit.............34
Warning beacon....................................................34
Trailer coupling......................................................34
Extra counterweights............................................34
Starting the engine.................................................35
Engine block heater...............................................35
Stopping the engine...............................................36
Drive control.........................................................37
Steering of the loader.............................................38
Requirements for attachments..............................39
Coupling the attachments.....................................40
Coupling the hydraulic hoses of the attachment....41
Releasing the pressure of hydraulic system...........41
Transporting instructions and tie down points......42
Installing of frame lock...........................................42
Towing...................................................................42
Lifting...................................................................43
Storage of the loader..............................................43
Maintenance and service............................................44
Safety instructions.................................................45
Maintenance of hydraulic systems..........................45
Daily inspections and Maintenance.......................46
Service, engine......................................................46
Service schedule....................................................47
Daily inspections and maintenance...........................48
Refueling...............................................................48
General condition of loader...................................48
Cleaning of the loader..........................................49
Greasing of the loader..........................................50
Hydraulic oil level..................................................52
Attachment and its locking .......................................52
Engine oil level.......................................................53
Check coolant level...............................................53
Water in fuel..........................................................53
Air filter element...................................................53
Battery and electric cables....................................54
Drive control and steering.....................................54
Movements of boom.............................................54
Main fuses..............................................................55
Light bulbs.............................................................55
Hydraulic oil cooler fan fuse..................................55
Jump start and auxiliary power..............................55
Filters....................................................................56
Troubleshooting....................................................57
Service history..............................................................58
EC Declaration of Conformity....................................59

3
400 Series
Introduction
AVANT TECNO OY wants to thank you for purchasing this AVANT loader. It is the result of Avant’s long experience in
design and manufacturing of compact loaders. We ask you that you read and understand the contects of this manual
completely before operating the loader. This operator’s manual is intended to help you to:
• operate this machine safely and efciently
• observe and prevent situations that may cause a risk or danger
• keep the machine in good condition and its life span as long as possible
The following warning symbols and signal words are used throughout this manual to indicate factors that must be taken
into account to reduce the risk of personal injury or damage to property:
Introduction
This signal word indicates a hazardous situation which, if not avoided, will cause death or serious
injury.
This signal word indicates a potentially hazardous situation which, if not avoided, could cause
serious injury or death.
This signal word is used when minor injury could result if the instructions are not followed properly.
This signal word indicates information about the correct operation and maintenance of the
equipment. It is used without the safety alert symbol.
Failure to observe the instructions accompanying the symbol can lead to equipment breakdown or
other property damage.
WARNING:
SAFETY ALERT SYMBOL
This symbol means: “Warning, be alert! Your safety is
involved!”
This safety symbol refers to important safety information in this
manual. It warns of an immediate hazard that could cause serious
personal injury to yourself or others near the equipment.
The safety alert symbol by itself and with related safety statement
indicates important safety messages throughout this Manual. It
is used to draw attention to instructions involving your personal
safety or the safety of others. When you see this symbol, be alert,
your safety is involved, carefully read the message that follows,
and inform other operators.
DANGER
WARNING
CAUTION
NOTICE

4
400 Series
In addition to this Operator’s
manual of the loader, ensure
that you have received and
read also the original Engine
owner’s manual. The instructions
concerning the engine must be
followed. If conicting information
is found, the information shown
in the Operator’s Manual of the
loader must be followed.
Each attachment is accompanied by
its own respective Operator’s Manual.
The manual will show important
information related to safety, and how
to attach, use, and maintain each
attachment correctly.
Intended use
AVANT 423 is an articulated compact loader, designed and manufactured for both professional and private use. The
loader can be equipped with attachments offered by Avant Tecno Oy, which enables doing of several different jobs.
Because of this multi purpose nature of the machine and the various attachments and tasks, read always not only this
Manual but also the Operator’s manual of the attachment, and follow all instructions. Every person who has to do with
this machine must follow work safety regulations, all other generally accepted rules related to work health and safety,
and all road trafc regulations.
Remember that safety consists of several factors. The loader, equipped with an attachment is very powerful and can
cause serious personal injuries or property damages if it is operated in a wrong or careless way. Do not operate an
attachment unless you have familiarised yourself with the use of it and the eventual dangers related to it.
This loader has been designed to require as little maintenance as possible. The operator can perform the routine
maintenance operations. There are however more demanding service operations that can be done by professional
service personnel only. It is allowed to perform service operations only when wearing appropriate protective equipment.
Original spare parts must be used. Familiarise yourself with the service and maintenance instructions in this Manual.
Contact your local AVANT dealer, if you are uncertain of anything concerning the operation and maintenance of this
loader, or for any questions, service or spare parts.
Make sure all relevant manuals are available
Wrong use of the equipment can cause death or severe injuries - Make sure to read all
relevant manuals and instructions thoroughly and keep them available for all operators.
Using each attachment requires specic information about correct use, mounting procedure,
safety, and how to avoid hazardous situations. An attachment may introduce risks that are not
present when operating the loader with other kinds of attachments. Always read the operator’s
manual of each attachment carefully.
Contact your local AVANT dealer for any questions, service, spare parts or about any problems that may occur with the
operation of your machine.
Keep this Operator’s manual with the machine at all times. If this Manual gets lost, ask for a new copy from your Avant
dealer. Remember also to give this Manual to the new owner when the machine changes ownership.
Safety instructions
DANGER
DANGER

5
400 Series
Safety first
Incorrect or careless operation of the loader may cause a serious accident. Before putting
the machine into operation, familiarise yourself with the use of the machine and read
and understand this Operator’s Manual, as well as all relevant safety instructions, local
regulations, and safe working practices.
Understand the limitations of speed, braking, steering and stability as well as loading
capacity of the machine before starting operation. Make sure that everyone who operates or
works with this equipment is familiar with these safety precautions. If you have no previous
experience of the machine, make sure to do all testing at a safe and open place with no
persons in the area of operation.
Read this Operator’s manual, and also the Operator’s manual of the attachment(s), the
engine owner’s manual, safety decals and other safety instructions before beginning to
operate the loader. Failure to follow the safety precautions listed in this manual may result
in personal injury and/or damage to the equipment.
Safety instructions
General safety instructions - Always follow all instructions to avoid personal injury
DANGER
1. Remember the correct working position. When driving,
be comfortably seated in the driver´s seat, keep your
feet in their proper place in the footwell and at least
one hand on the steering wheel.
2. When seated, always keep the seat belt fastened and
keep hands and feet inside the operator’s area.
3. Before leaving driver’s seat, always:
• Lower the loader boom and place attachment at
on ground
• Engage the parking brake
• Stop the engine, remove the ignition key
4. Start the operation slowly and carefully. Practise
driving of the machine at a safe and open place before
connecting any attachment, and follow the instructions
in this Manual and also the operator’s manual of the
attachment.
5. Operate the control levers with careful and deliberate
movements. Avoid abrupt movements when handling
the load, in order to prevent the load from falling and to
keep the machine stable.
6. Keep away from the danger zone of the lifted boom
and don’t let anyone go there.
7. Keep your hands, feet and clothing away from all
moving parts, hydraulic components, and hot surfaces.
8. Make sure that there is enough open space around the
loader and its attachments for safe driving and use of
the attachments
9. Do not transport the load with the boom lifted. Always
carry bucket or attachment as low as possible, and put
the load down whenever you leave the machine.
10. It is not allowed to transport persons with this machine.
Do not transport or lift persons in the bucket or in any
other attachment.
11. Do not exceed the tipping load. Familiarise yourself
with and follow the load diagrams in this Manual.
12. When turning with the machine, remember that the
driver´s seat extends beyond the turning radius of the
wheels (collision risk).
13. Do not operate the loader in an explosive environment
or in a place where dust or/and gases can create a re
or explosion hazard.
14. Keep the engine area clean of ammable materials.
15. Read the lifting, towing and transportation instructions
on page 42.
16. Switch off the battery disconnect switch whenever
leaving the machine unattended.
17. Follow all inspection, service and maintenance
instructions. If you notice any faults or damages on
the machine, these must be repaired before starting
operation.
18. Before any maintenance or repair operation always
stop the engine, lower the boom down and release
pressure from hydraulic system. Read safety
instructions for maintenance on page 46.
19. Do not let any person operate this loader who has not
read safety instructions and is not familiar with the safe
and correct use of this loader.
20. Never operate the loader or attachments while under
the inuence of alcohol, drugs, medication that may
impair judgement or cause drowsiness, or if not
otherwise medically t to operate the equipment.

6
400 SeriesSafety instructions
Falling of load or unexpected
lowering of loader boom - Risk of
crushing. Always remember that the
boom may lower unexpectedly due to
loss of stability, mechanical fault, or if
another person operates the controls of
the loader, leading to crushing hazard.
The attachment or the loader are
not intended to be left to keep a load
elevated for longer periods. Lower the
attachment before leaving the driver’s
seat. The stability of the loader may
change when leaving the driver’s seat,
leading to tipping over of the machine.
Falling of persons - Risk of crushing.
Never use the loader or its attachments
to lift persons or as any kind of work
platform even temporarily. Never climb
on the loader or on the attachment.
Seating capacity: one person only,
regardless of attachment.
Risk of falling objects - Make sure
load is securely on the attachment.
Never tilt an attachment back when
it is lifted high. Make sure the loader
is equipped with ROPS and FOPS
structures that are in good condition
and do not have visible damage. Make
sure the attachment is properly locked.
Hydraulic pressure - Risk of injury.
Escaping hydraulic uid under pressure
has sufcient force to penetrate skin,
causing serious personal injury. Never
use hands to search for possible
leaks in hydraulic systems - use a
piece of cardboard instead. Release
residual hydraulic pressure before
disconnecting any tting and before
any service operation. See a physician
immediately if hydraulic uid penetrates
skin, serious injury can result quickly.
Risk of being crushed by moving
loader - Engage parking brake
before working near the loader.
Follow safe stopping procedure to
prevent all movements of the loader.
Avoid leaving the loader parked on hill.
If necessary to park on hill, use chocks
or other additional means to prevent
the loader from moving.
Safety devices are installed for your
safety - Never modify or bypass any
safety function. Safety functions are
installed for your safety. Never modify
or block any of the safety systems of
the loader. If you notice that a system
is not in good condition, stop the use
of the loader and make sure the is
serviced.
DANGER
DANGER
WARNING
WARNING
DANGER
WARNING

7
400 Series Safety instructions
Pinching points - Avoid pinching
between loader frame itself and
between loader and walls - Keep all
body parts within the safety frame.
Movements of the articulated frame
creates pinching hazards. Keep your
head, hands, and feet inside the loader.
Be especially careful while you drive
near walls and trees. Keep your hands
on steering wheel and joystick.
Avoid pinching hazard for legs - Do
not turn the steering wheel while
standing near the loader. Turning the
articulated frame creates a pinching
hazard to a person standing near the
tyres of the loader. Never grab the
steering wheel while entering or leaving
the driver’s seat to avoid turning of the
frame. Stop the loader if other persons
get close to it. Check that tyres that
are larger than standard tyres leave
enough space between the tyres for
safe use.
Handling of heavy loads
Handle loader with care - Risk of
tipping over.
• Follow all instructions and warning
labels to avoid tipping over of the
loader.
• Always put the load down on the
ground before you leave the driver’s
seat.
• Keep loads as low and as close to the
loader as possible.
• When loading, always keep the loader
frame as straight as possible.
• Never drag a heavy load with the
loader from high level – e.g. from
truck, shelf etc.
• Always handle heavy loads only on rm, level ground,
while you drive slowly with the machine.
- Uneven or inclined terrain signicantly reduces the
safe working load, (see also page 23.)
-Use the maximum loads indicated in the diagram in
this manual as a guideline.
-All rated operating capacities are based on the
criteria of the machine is level on a rm supporting
ground. When the machine is operated in conditions
that deviate from these criteria (e.g. on soft or uneven
ground, on a slope or when subject to slide loads),
you must take these conditions into account.
-Remember that the actual load carrying capacity
varies greatly according to operating conditions and
control manner.
-Be especially careful when the load sensor indicator
is activated. See page 23 for more information about
the load sensor.
•Keep the articulated frame of the loader in straight position
when you lift heavy loads. If you turn the loader during
load handling, the stability of the loader will decrease and
it may overturn the machine.
•The use of extra rear weights or ballasted tires is
recommended. See page 34 for different options.
•Make sure to follow the recommended tire pressures.
•Pay attention that a heavy load or long distance between
the loader and the center of gravity of the load will affect
the balance and handling of the loader.
•When you estimate the lifting capacity of the loader,
remember to take the weight of the attachment into
account.
WARNING
CAUTION
WARNING

8
400 SeriesSafety instructions
Whenever you handle heavy loads or heavy attachments:
Overload - Risk of overturning.
The high lift capacity of the loader makes
it possible to exceed the stability of
the loader when handling loads. Read
the instructions regarding maximum
lift capacity and load handling in this
Operator’s Manual. Following the
instructions reduces the risk of tipping
the machine over its front axle, but the
operator must be aware of the limits of
the machine and follow safe working
practises to avoid overturning of the
machine.
Articulated frame - Risk of
overturning. Turning articulated frame
can lead to overturning of the loader
on inclined terrain or when driving at
high speed. Never turn frame towards
the slope while operating on inclined
ground. Always drive slowly when
carrying load or when turning with the
machine.
Sudden movements can tip the
machine over - Risk of overturning.
Movements, such as stopping, turning,
or lowering the boom abruptly, can
cause loss of stability. Always drive
slowly and operate the controls of the
loader very carefully, especially when
handling heavy loads.
In case the loader tips over :
Avoid tipping over of the loader with careful operation and
the instructions given throughout this manual. However, it
is important to know what to do in case the machine tips
over.
Risk of being crushed by the ROPS
structure in case the laoder tips over
- Always use the seat belt and stay
within the space protected by the
ROPS safety frame.
Always keep seatbelt on to stay on
driver’s seat and to avoid getting crushed
between ground and a loader that tips
over.
In case the loader tips over: Switch
off the engine of the loader immediately.
Running the engine and pumps of an
overturned loader will damage them
quickly and will spill hydraulic oil and
fuel. As soon as possible, lift the loader
back on its wheels to prevent spilling of
fuel and oils. The loader can in many
cases be lifted back on its wheels
by having a few persons to lift it from
the ROPS frame. Engine oil can leak
inside the engine, causing major engine
damage if the engine is attempted to
be restarted after the loader has been
overturned. Contact service before you
attempt to restart the engine.
WARNING
WARNING
CAUTION
NOTICE
WARNING

9
400 Series Safety instructions
Operation on gradients
Load, unload, and turn on at level ground only. Drive slowly
on uneven terrains. Do not drive on too steep a gradient -
watch out for ditches, manholes and steep gradients.
Do not park the machine on a surface with a gradient.
Should this be necessary, engage the parking brake and
preferably turn the machine sideways and put down the
load. If needed, use chocks behind the wheels.
Use low speed range when driving on hills or uneven
terrain.
Risk of tipping over - Always keep
loads close to the ground. The
stability and the load handling capacity
of the loader are signicantly reduced
on inclined terrains and Maximum
lifting capacity can be achieved only on
rm, level ground. On horizontally tilted
terrain the load must be kept close to
the ground and must never be lifted
high.
Suffocation hazard - Ensure ventilation
Engine exhaust contains carbon
monoxide (CO), a poison gas you
cannot see or smell. Using a loader
in enclosed space or poorly ventilated
areas will kill you in minutes.
Never operate the loader indoors or in partly enclosed
areas unless you’ve made sure there is special ventilation
system installed. Loaders with a combustion engine produce,
among other pollutants, carbon dioxide (CO2) and can also
emit carbon monoxide (CO) under some conditions that can
concentrate quickly to a dangerous level. Never leave the
engine running in garages or sheds. Operate the loader
only outdoors and far from windows, doors, and vents.
Elevated level of carbon dioxide or carbon monoxide
in breathing air can not be noticed without dedicated
measuring equipment. Signs of carbon monoxide poisoning
include nausea, headache, dizziness, drowsiness, and lack
of consciousness.
Get fresh air if anyone shows signs of carbon monoxide
poisoning and see a physician.
Diesel exhaust also contains other chemicals that are
harmful. Prolonged exposure to exhaust fumes should be
avoided. Ventilate indoor spaces well e.g. after starting a
loader. The odor or colour of diesel exhaust does not tell
if there are dangerous levels of carbon dioxide or carbon
monoxide in the breathing air.
DANGER
DANGER

10
400 SeriesSafety instructions
Personal safety and protective equipment
Wear safe clothing and personal protective equipment.
• Protect yourself against work hazards like noise,ejecting
debris or dust for example.
• Follow regulations regarding protective equipment.
Wear eye protection and hard hat or other protective
equipment as needed.
• Read Operator’s Manual of the attachment for more
information about protective equipment needed in the
work.
• The noise level at the driver’s seat may
exceed 85 dB (A). Wear hearing protection
while working with the loader.
• Wear protective gloves.
• Wear safety boots whenever working with
the loader.
• Wear safety glasses when handling
hydraulic components.
• Always fasten seat belt while operating
the machine.
• When working at construction sites, a
hard hat is recommended and may be
mandatory in addition to the falling objects
protective structure (FOPS) on the loader.
• Depending on work and working area,
also a respirator mask maybe required.
Find out about other necessary safety
equipment at your specic work site.
Silica dust warning. Prolonged
exposure to crystalline silica can
cause a lung disease called silicosis.
Occupational health and safety ofcials
recommend limiting exposure to dust
that is present at most earth-moving and
many other work sites. Avoid spreading
of dust where possible, keep loader
cabin clean from dust, use respiration
mask when necessary.
Safety frame (ROPS) and safety canopy (FOPS)
The loader is equipped with a Rolling Over Protective
Structure (ROPS) and a Falling Object Protective structure
(FOPS). These safety structures are important parts of
operator safety, and they must be tted on the machine.
Safety frame (ROPS) protects the operator in case the
machine tips over. Fasten seat belt while operating a
machine with a ROPS. All cab versions are ROPS & FOPS
tested and certied.
Crushing hazard - Always keep safety structures
installed
Never remove the safety structures,
modify them, or attempt to repair.
If damaged, contact service. Always
fasten the seat belt in order to stay
inside the protected area of the safety
frame.
Understand the limitations of the Falling Object Protective
structure (FOPS). The loader is equipped with a Level 1
FOPS, which gives protection against moderate impacts.
Modifications
Any modication to this machine must be approved
beforehand by an authorised Avant representative. If you
modify the loader or attachment, it can become dangerous
and cause serious injuries or even death. Unauthorised
modications can increase the risk of accidents and damage
or shorten the service life of the machine. Modications
to engine can make it no longer compliant with emission
regulations. Use only original spare parts to make sure that
the product is kept in safe operating condition.
CAUTION
WARNING

11
400 Series
Electric system and handling the battery
Always handle the battery with care. Follow the safety
instructions given below. The battery of the 12 V electric
system of the loader is located at the rear of the loader, on
the right side of the engine. See page 56 for more information
about battery and maintenance instructions.
Short-circuit of the battery can create
re or explosion. Disconnect the
battery with the battery disconnect
switch before working on the engine
or equipment. Never lay metal objects
on the battery. Keep the top surface of
the battery clean.
Battery acid can cause severe skin
burns. Handle damaged battery with
extreme care and wear appropriate safety
gloves and clothing. Battery is a sealed
type battery, meaning that you should never
attempt to open the battery.
Lead acid batteries produce
ammable and explosive gases
during charging. Make sure that
ventilation is sufcient when
charging the battery. Keep arcs,
sparks, ames, and lighted tobacco
away from battery. Never charge a
frozen battery. A frozen battery can
explode during charging.
Battery and its terminals contain lead,
a harmful substance which should
not be handled more than what is
necessary. Wash hands with soap and
water after handling the battery.
Whenever you handle the battery, keep the following in mind:
• Battery contains corrosive sulphuric acid which causes
serious burns upon skin contact. Avoid contact with skin or
clothes. If electrolyte gets on your skin or clothes, ush with
a lot of water. In case of contact with eyes, ush with a lot of
water for at least 15 minutes and see a doctor immediately.
• In order to avoid spark emissions, always disconnect the
negative (-) cable rst and connect it last.
• Before connecting the battery cables make sure that
the polarity is correct: Faulty connection will seriously
damage the electric system of the engine and may cause
sparks, re, or even explosion of the battery.
• If a fuse is blown repeatedly, nd out the cause. Always
use fuses with correct rating.
• Read the instructions for jump start, see page 58
Fire prevention
Clean the loader to avoid build-up of ammable debris,
such as dust, leaves, hay, straw, etc.
• There are many parts of the diesel engine that operate
at high temperatures in normal use. To avoid re, and
to ensure that the cooling is ensured, keep the engine
and engine bay clean. Overheating of the engine can
shorten its service life.
• Do not smoke during refueling or during any inspection
or maintenance work.
• Add fuel and oils only at a well ventilated place.
• Oil and fuel leaks can ignite on hot components. Repair
any damaged or leaking components before using
loader. Refuel and add oil only after the loader is cooled
down.
• The battery produces hydrogen gas during recharge.
This gas can cause re or explosion, if charging of the
battery is not made correctly. Charge battery in a well
ventilated place, and keep sources of ignition away from
battery during recharge. Static electricity can produce
sparks when removing plastic cover, avoid handling or
cleaning of plastic covers when battery is connected to
a charger.
Know where re extinguishing equipment is located near
your working site. At some areas a re extinguisher may
be mandatory. Keep a multi-purpose, approved type re
extinguisher available near the place where you store the
loader.
To prevent the risk of re, always disconnect the battery
with the battery disconnect switch. See page 28 for more
information about the battery disconnect switch.
Risk of re - Always switch off main
current when the loader is not used.
Turn the battery disconnect switch to
position OFF whenever leaving the
loader unattended or before servicing
the machine. If left on, there is a risk
of sparks and short-circuit during
maintenance and if any electric insulator
is faulty.
WARNING
WARNING
WARNING
CAUTION
WARNING
Safety instructions

12
400 Series
Avant 423 warranty
This warranty specically applies to the AVANT 420/423 loader only and not to any attachments used with this product. Any
repairs or modications performed without the prior authorisation of Avant Tecno Oy will cancel this warranty.
During the rst two years of operation or rst 750 hours (whichever is the soonest) Avant Tecno Oy warrants to replace
any part or repair any defect which may occur, subject to the terms detailed below:
1) The product has received regular maintenance in accordance with schedules given by the manufacturer.
2) Any damage caused by operation in a negligent manner or exceeding the approved specications detailed in this
manual is excluded.
3) Avant Tecno Oy accepts no responsibility for interruption to working or any other consequential losses resulting from
any failure of the product.
4) Only Avant Tecno Oy approved replacement or original quality parts shall be used during routine maintenance.
5) Any damage caused by the use of incorrect fuel, lubricants, cooling liquid or cleaning solvents is excluded.
6) The Avant Warranty excludes any consumable parts (e.g. tires, batteries, lters, belts etc.) except where it can be
clearly shown that these parts were defective on original supply.
7) Any damage caused resulting from the use of attachments not approved for use with this product is excluded.
8) In the event a fault occurs which is attributable to manufacturing or assembly defect you should arrange to return
your AVANT to your authorised dealer for repair. Travel and freight costs are excluded.
Warranty

13
400 Series Description of the loader
Description of the loader
Identification of the loader
Write down the identication information of your loader in the following elds, it facilitates ordering of spare parts etc.
1. Loader model_____________________________________________
2. Loader serial no.___________________________________________
3. Engine serial no.___________________________________________
Serial number of the loader is printed on the type plate, which also indicates the loader model.
Location of engine serial number can be found in the Operator’s manual of the engine.
Dealer:____________________________________________________
Contact information:_________________________________________
________________________________________
Loader identification
Loader identication plate is located near the steering
wheel on machines with ROPS canopy and cab L.
Engine identification
Engine identication plate is located on the valve cover.

14
400 SeriesDescription of the loader
Main parts of the loader
Following picture shows the main parts of the loader:
j
k
l
m
Front frame
On the front frame are mounted: driver’s seat,
operating controls, hydraulic control valves, hydraulic
oil tank, auxiliary hydraulics outlet, front wheels,
parking brake, hydraulic motors and the loader boom
with attachment coupling plate.
Back frame
On the back frame are mounted: engine with
accessories, battery, fuel tank, hydraulic pumps, rear
wheels, hydraulic motors, counterweights.
Articulation joint
Articulation joint connects the front and back frame.
The loader is steered hydraulically by the steering
cylinder which is mounted between the front and
back frames. Hydraulic hoses and electric wires are
conducted through the articulation joint.
Loader boom
Loader boom is mounted on the front frame with a
pivot pin. The attachment coupling plate is mounted
on the lower end of the boom. The boom can be
telescopic, extending 600 mm hydraulically.
n
o
p
q
Attachment coupling plate
Attachments are mounted on the attachment coupling
plate. The locking pins on the plate can be operated
manually (standard) or hydraulically (option).
Auxiliary hydraulics outlet
The hydraulic hoses of hydraulically operated
attachments are mounted on this outlet. The outlet
is equipped with the multi connector quick coupling
system and is double acting: it has two pressure
lines and one tank line. Also the optional attachment
control switch pack socket is mounted on the multi
connector. In addition, as an option, it is also possible
to install a single or double acting auxiliary hydraulics
outlet in the rear of the machine, or a double acting
outlet in the front under the multi connector.
ROPS safety frame
ROPS frame (Roll-over protective structure) complies
with the standard ISO 3471:1994 with Amendment
1:1997 and Technical Corrigendum 1:2000.
FOPS canopy
FOPS canopy (Falling objects protective structure)
mounts on the ROPS. It meets the ISO 3449:2005
FOPS level 1 (1365 J) criteria.
Hydraulic
connectors
Multi connector
Tank line
Attachment control switch
pack socket (option)
Pressure 2
Pressure 1
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k
l
m
n
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p
q

15
400 Series Description of the loader
Signs and decals
Shown in the gure below and listed on the following page are the labels and markings, which must be visible on
the equipment. Replace any warning label which has become unclear, or has detached completely. New labels are
available via your Avant dealer, authorized Avant service point, or contact information provided on the cover.
Before applying a new decal, clean the surface from dirt, dust, grease, or other material. Peel small portion of the
decal backing paper and apply exposed adhesive to cleaned surface, aligning the decal properly. Peel rest of backing
paper and press with hands to smooth out the decal.
The warning labels contain important safety information and they help to identify and
remember the hazards related to the equipment. Make sure that the following signs
and decals are clean, undamaged and readable. If any of these decals is missing or is
unreadable it should be replaced without delay. Ask for new decals from your local Avant
dealer.
10
11
89
7
4
6
1
2
WARNING

16
400 SeriesSafety decals
Label Location Product
code
Safety message
1
On panel
below
the
steering
wheel.
A417277
WARNING
TO AVOID INJURY OR DEATH:
• Read operator’s manual before using
or servicing this machine. Follow
all additional safety procedures,
warning labels and attachment
operator’s manual.
• Wear hearing protection and other
proper personal safety gear called
for by job conditions. Do not wear
loose clothing while operating or
servicing machine.
• Always use seat belt. Never carry
passengers.
• Always perform a daily inspection
of the machine before starting
operation.
• Operate any machine control or
steering wheel only when sitting on
the driver’s seat.
• Keep hands, feet and clothing away
from any moving part.
• When coupling an attachment,
make sure that the locking pins of
the attachment coupling plate lock
properly down in the holes of the
attachment.
• Follow safe stopping procedure or
instructions provided in the operator’s
manual of the attachment before
leaving driver’s seat.
2
Boom,
on both
sides
A417273
(2 pcs)
DANGER
Lowering of loader boom can crush,
causing death or serious injury. Keep
out from the danger zone of the ma-
chine.
3
On
engine A417270
WARNING
Risk of burns - Extremely hot surfac-
es. Keep clear.
Allow loader to cool complet ely be-
fore maintenance.

17
400 Series Safety decals
Label Location Product
code
Safety message
4
At loader
entry point A411455
WARNING
Risk of crushing - Small gap between tyres
of articulat ed loader. Do not grip the steering
wheel from outside the machine or when
getting into the driver’s seat to prevent
moving of the wheels.
5
At loader
entry point A411456
WARNING
Risk of crushing - Keep hands and feet within
the driver’s area.

18
400 SeriesSafety decals
Label Location Product
code
Safety message
6ROPS
frame A420726 ROPS/FOPS Approval
7
Right
panel
near
driver’s
seat
A43600 Sound pressure level 88 dB(A) at driver’s
seat
8
Right
panel
near
driver’s
seat
A411047 Sound power level 101 dB(A) according to
the European directive 2000/14/EC
9
Front
panel
below
driver’s
seat
A415780 Correct type of hydraulic oil

19
400 Series Technical specification
Technical specification
*) Load is measured at 400 mm from the attachment coupling plate, including attachment weight ( 70 kg ) and with counterweights.
Model AVANT 423
Length 2195 mm
Width see table
Height 1980 mm
Weight 1080 kg
Standard wheels 23x8.50-12”grass/TR
Transmission, drive hydrostatic
Pulling force 700 kp
Drive speed 12 km/h
Hydraulic oil tank capacity 26 l
Hydraulic oil type ISO VG 46
Auxiliary hydraulics oil ow / pressure 34 l/min 185 bar
Turning radius inside/outside 880 / 1970 mm
Max. lifting height 2750 mm
Max. lifting capacity (hydr.) 690 kg
Max. tipping load* 550 kg
Max. breakout force / 50 cm 650 kg
Sound pressure level 2000/14/EC LP 81 dB (A)
Sound power level 2000/14/EC L
W
96 dB (A)
Hand-arm vibration, total
< 2,5 m/s²
Whole-body vibration, max. < 0,5 m/s²
2195 mm
710 mm 1100 mm 385 mm
2750 mm
2265 mm
1980 mm
200 mm
600 mm
990 -1095 mm
1980 mm

20
400 SeriesTechnical specification
Fuel requirements
Diesel fuel must meet the Ultra low sulfur diesel fuel requirements. Never add petroleum or any additives to diesel fuel.
To comply with emissions standards, use only ULSD fuel with sulfur content less than 15 ppm / 0,0015 %.
Engine oil requirements
Use only high quality engine oil with the viscosity rating
recommended by the engine manufacturer with API service
class SJ or higher. See also Kubota Operator’s Manual. In cold
conditions use high quality multi grade oil.
Tires
The loader can be equipped with different type of tires for different operating conditions. Grass pattern (GR) tires will
damage the ground surface less than tractor (TR) tires, but provide less traction.
For the best stability and controllability, always use the largest tires possible. Tires that are narrower than the standard
tires are intended for special purposes only with width restriction on the machine. Use only tires and rims that meet
the original specications and dimensions to avoid potential issues with load capacity, tire size, or bearing load on
drive motors. Consult your dealer if further information is needed. Special tires, such as studded wheels may also be
available. Consult your dealer for further information.
Engine specification


Tyres Tread
pattern
Code Pressure Machine width Fits with
snow chains
5 x 10 TR 65412 2,7 bar 990 mm 64055
23x8.50-12 GR 65045 2,0 bar 1050 mm 64455
23x8.50-12 TR 65046 2,0 bar 1050 mm 64455
23x10.50-12 GR 65047 2,0 bar 1095 mm 64745
23x10.50-12 TR 65048 2,0 bar 1095 mm 64745
Model 423
Engine make and type Kubota D902
Function 4-stroke
Coolant Water
Number of cylinders 3
Starter electric
Bore x stroke 72 x 73,6 mm
Displacement 898 cm³
Output (ECE R120) 16 kW (22 hp)
Fuel diesel
Fuel tank capacity 20 l
Engine oil type API CC
Viscosity SAE 10W-30
Engine oil capacity 3,7 l
Charging current max.
40 A