Spearhead Twiga Series User manual

Spearhead TWIGA
0
TWIGA Reach Mower
555/600/655T
555FR/600FR
Edition 1.3 –September 2013
PART No. 8999056

Spearhead TWIGA
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Spearhead TWIGA
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General information
CE Declaration of Conformity, Conforming to EU
Machinery Directive
2006/42/EC
We, Spearhead Machinery Ltd, Green View, Salford Priors, Evesham,
Worcestershire, WR11 8SW hereby declare that:
Product ……………………………………………..…………………………
Product Code……………………………………………..…………………………
Serial No……………………………………………..……..………………….
Type……………………………………………..…………………………
Manufactured by: Alamo Manufacturing Services (UK) Limited, Station Road,
Salford Priors, Evesham, Worcestershire, WR11 8SW
Complies with the required provisions of the Machinery Directive 2006/42/EC. The
Machinery Directive is supported by the following harmonized standards:
BS EN ISO 14121-1 (2007) Safety of Machinery –Risk Assessment, Part 1:
Principles Part 2: Practical Guide and Examples of Methods.
BS EN ISO 12100-1 (2010) Safety of Machinery –Part 1: Basic Terminology
and Methodology Part 2: Technical Principles.
BS EN 349 (1993) + A1 (2008) Safety of Machinery –Minimum Distances to
avoid the Entrapment of Human Body Parts.
BS EN 953 (1998) Safety of Machinery –Guards General Requirements for
the Design and Construction of Fixed and Movable Guards.
BS EN 982 (1996) + A1 (2008) Safety Requirements for Fluid Power Systems
and their Components. Hydraulics.
The EC Declaration only applies if the machine stated above is used in accordance
with the operating instructions.
Signed
(On behalf of Spearhead Machinery Ltd)
Status General Manager
Date 01/09/2013

Spearhead TWIGA
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Introduction
The TWIGA is a very robust high capacity reach mower that is easy to operate and
maintain. To ensure trouble-free operation this manual should be carefully studied.
The term Left and Right hand applies to the machine when coupled to the tractor and
viewed from the rear, this also applies to the tractor.
Important Note
The information contained in this manual is correct at the time of publication.
However, in the course of constant development, changes in specification are
inevitable. Should you find the information given in this book different to the
Machine it relates to please contact the “After Sales Department” for advice.
Please ensure that this manual is handed to the operator before using the
machine for the first time. The operator must fully understand the contents
of this manual before using this machine.
(If the machine is resold the Manual must be given to the new owner.)

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Indhold
General information.......................................................................................................2
CE Declaration of Conformity, Conforming to EU Machinery Directive.................2
Introduction................................................................................................................3
Specification MID......................................................................................................6
Specification PRO......................................................................................................7
Safety .............................................................................................................................8
Machine Safety Stickers ............................................................................................8
Safety Recommendations 1............................................................................................9
Beware of the following Potential Dangers associated with the use of this machine:
....................................................................................................................................9
Always .......................................................................................................................9
Never........................................................................................................................10
Overhead Power Lines.................................................................................................11
Minimum Heights for Overhead Power Lines.........................................................11
Definitions of Exclusion Zones ...............................................................................12
Risk Assessment ......................................................................................................12
Emergency Action for Accidents Involving Electricity...........................................12
Safety Recommendations 2..........................................................................................13
Lighting Kits............................................................................................................13
Warning Signs..........................................................................................................13
Roadwork guidelines ...............................................................................................13
Training....................................................................................................................13
Tractor Requirements...............................................................................................13
Attaching your machine to the tractor –Using Axle mounting...................................14
Attaching your machine to the tractor –when using 3 Point Linkage.........................17
Running Up Your Machine..........................................................................................21
Removing from the tractor...........................................................................................22
Subsequent attachment to a different tractor ...........................................................22
Hydraulic Proportional Controls - 2SV ...................................................................23
Electric Proportional PRO PILOT Control - 3SV ...................................................24
PRO PILOT Switch Box..........................................................................................25
Cutting Head Set-Up - MP head..................................................................................26
Hedge Cutting..........................................................................................................28
Grass Cutting ...........................................................................................................29
Cutting Height Adjustment......................................................................................29
Operation......................................................................................................................30
Operation Warnings.................................................................................................30
Moving into transport position.................................................................................31
Engaging Head Drive...............................................................................................33
Disengage Head Drive.............................................................................................33
Break Back...............................................................................................................34
Auto Reset................................................................................................................34
Tractor Forward Speed ............................................................................................35
Cutting Sequence .....................................................................................................35
Wire Trap.................................................................................................................36
Oil Cooler.................................................................................................................36
Options.........................................................................................................................37

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Head Float................................................................................................................37
Arm Float.................................................................................................................37
Debris Blower..........................................................................................................39
Hydraulic Rear Roller..............................................................................................40
Autopilot..................................................................................................................41
Introduction To The Autopilot.............................................................................41
Set-Up: Correct position of micro switches.........................................................42
Summary..............................................................................................................42
Auto Pilot Switch Alignment...............................................................................44
Alternative Settings..............................................................................................44
Operation Of The Autopilot.................................................................................45
Transport of the machines with Autopilot...........................................................45
Quad Saw.....................................................................................................................45
Technical Data & Description .................................................................................47
Belt Diagram - Quad Saw........................................................................................47
Mounting the Quad Saw ..........................................................................................47
Quad Saw Operating Instructions............................................................................48
Telescopic Arm............................................................................................................49
Description...............................................................................................................49
Operating the Telescopic Arm.................................................................................49
Transporting the Telescopic Arm ............................................................................49
Forward Reach (FR) & Variable Forward Reach (VFR).............................................50
Description...............................................................................................................50
Operating the (Variable) Forward Reach.................................................................50
Transporting the (Variable) Forward Reach............................................................50
Service & Maintenance................................................................................................51
Greasing/Lubrication Points ....................................................................................51
Lubrication Chart.....................................................................................................52
Greasing/Lubrication ...............................................................................................52
Washing your machine ........................................................................................52
Gearbox................................................................................................................52
P.T.O....................................................................................................................52
Motor Drive - Direct Drive..................................................................................52
Motor Drive - Belt Drive .....................................................................................52
Oil requirements...................................................................................................52
Hydraulic Hoses.......................................................................................................53
Oil Supply................................................................................................................54
Oil ............................................................................................................................54
Recommendations....................................................................................................54
Filtration Maintenance.............................................................................................54
Flail Head.................................................................................................................55
Pins & Bushes..........................................................................................................56
Storage .....................................................................................................................56
Torque Settings........................................................................................................57
Regular Service Chart..............................................................................................57
Trouble Shooting .........................................................................................................58
Trouble Shooting .........................................................................................................59
Pump & Motor Failure.................................................................................................60
Warranty ......................................................................................................................61
Warranty Conditions................................................................................................61

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Specification MID
555
600
655T
555FR
600FR
Weight inc. Oil (Kg)
1350
1370
1465
TBC
TBC
Weight of head (Kg)
300
300
300
300
300
Tractor horse power
85-120
95-120
100-140
TBC
TBC
Min. tractor weight (Kg)
3500
3750
4000
TBC
TBC
Oil tank capacity (ltr)
230
230
230
230
230
Reach A (m)
5.5
6.0
6.5
TBC
TBC
Reach B (m)
4.9
5.3
5.9
TBC
TBC
Reach C (m)
3.9
4.2
4.7
TBC
TBC
Reach D (m)
6.5
6.7
7.2
TBC
TBC
Reach E (m)
4.9
5.2
5.7
TBC
TBC

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Specification PRO
560
650T
700T
800T
600VFR
650VFR
Weight inc. Oil (Kg)
1500
1650
1720
1850
1700
1750
Weight of head (Kg)
300
300
300
300
300
300
Tractor horse power
100-130
120-150
140-170
160-190
120-150
140-150
Min. tractor weight (Kg)
4500
5000
6000
6500
5000
6000
Oil tank capacity (ltr)
220
220
220
220
220
220
Reach A (m)
5.6
6.5
7.0
8.0
6.0
6.5
Reach B (m)
5.0
5.9
6.4
7.4
5.4
5.9
Reach C (m)
3.8
4.7
5.2
6.0
4.2
4.7
Reach D (m)
6.7
7.6
8.1
8.6
7.1
7.6
Reach E (m)
5.2
6.1
6.6
7.1
5.6
6.1

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Safety
Machine Safety Stickers
Warning
Danger –flying objects
keep safe distance from
the machine as long as
the engine is running.
Warning
Shut off engine and remove
key before performing
maintenance or repair work.
Warning
Avoid fluid escaping
under pressure. Consult
technical manual for
services procedures.
Warning
Carefully read operator’s
manual before handling this
machine. Observe
instructions and safety rules
when operating.
Warning
Stay clear of mower flails.
Warning
Do not remove / open
guard..
Warning
Beware of overhead
electrical power line.
Warning
Check all nuts and
bolts are tight every
8 hours.

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Safety Recommendations 1
Beware of the following Potential Dangers associated with
the use of this machine:
Becoming trapped when hitching or unhitching.
Tractor overbalancing when arm is extended.
Electrocution due to hitting overhead power lines.
Getting caught on rotating power take off (PTO).
Being hit or caught by any moving part, e.g. belts, pulleys, arms, cutting head.
Being hit by flying debris or machine parts due to machine damage.
Machine overbalancing when not in use.
Injection of high pressure oil from damaged couplings or hydraulic hoses.
Accidents due to collision with other machines, or debris left on road.
Always
Ensure the operator has read this handbook and has been trained to use the
machine.
Ensure all cab safety guards are in place and all tractor windows closed.
Before leaving the tractor cab always ensure that the flail head is firmly on the
ground, no weight is on the machine’s hydraulics and the rotor has stopped
spinning.
Check that all guards are properly fitted and there are no damaged or loose
parts. Particular attention should be given to the flails to ensure they are not
damaged, cracked or missing.
Inspect work area for wire, steel posts, large stones and other dangerous
materials and remove before starting work.
Beware of the danger of overhead power cables. The operator must be
aware of the maximum height and reach of the machine when working under
power cables. The minimum legal height for 11,000 and 22,000-volt cables is
5.2 metres from the ground. When fully extended, the machine may well
exceed this height so extreme caution should be practised. For more
information contact the Health and Safety Executive or your local power
company.
Ensure that all warning labels are always visible and that they are not
damaged, defaced or missing..
Lower the head to the ground when parking up.
Fit locking pins to slew and height before transport and before unhitching
when applicable.
Wear ear defenders if operating without a quiet cab or with the cab windows
open.
Ensure tractor guards are fitted correctly and are undamaged.
Work at a safe speed, taking into account terrain, passing vehicles and
obstacles.
Ensure that the tractor meets the minimum weight recommendations of the
machine manufacturer and that ballast is used if necessary.
Check that machine fittings and couplings are in good condition.
Follow the manufacturer’s instructions for attachment and removal of machine
from the tractor.

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Use clear warning signs to alert others to the type of machine working in the
vicinity. Signs should be placed at both ends of the work site and should be in
accordance with Department of Transport recommendations.
Ensure flails are of the type recommended by the manufacturer, are securely
fitted and are undamaged.
Ensure hydraulic pipes are correctly routed to avoid damage from chafing,
stretching, pinching or kinking.
Disengage the machine, stop the engine and remove the key before leaving
the tractor cab for any reason.
Clean up any debris left at the work site.
Ensure that when you remove the machine from the tractor it is secured in a
safe position using the stands provided.
Never
Never operate the machine with other people present, as it is possible for
debris, including stones, to be discharged from the front and rear of the flail
head.
Never operate the machine until you have read and understood the relevant
Handbook and are familiar with the controls.
Never use a machine that is poorly maintained or has guards that are
damaged or missing.
Never allow an inexperienced person to operate the machine without
supervision.
Never use or fit a machine onto a tractor if it doesn’t meet the manufacturer’s
specification.
Never use a machine if the hydraulic system shows signs of damage.
Never attempt to detect a hydraulic leak with your hand, use a piece of card.
Never allow children to play on or around the machine at any time.
Never attempt any maintenance or adjustment without first disengaging the
PTO, lowering the head to the ground, stopping the tractor engine and
applying the tractor parking brake.
Never leave the cab without removing the ignition key.
Never operate the tractor or any controls from any position other than from
the driving seat.
Never stop the engine with the PTO engaged.
Never operate with flails missing.
Never operate PTO above recommended speed, 540 R.P.M.
Never operate with wire around the rotor. Stop immediately.
Never use the head at an angle, which may throw debris towards the cab.
Never attempt to use the machine for any purpose other than that it was
designed for.
Never transport with the PTO engaged.
Never enter the working area of the machine (risk of injury!).
Never transport with the controls live, always turn off electrical isolator switch
(red) and disconnect supply.

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Overhead Power Lines
It cannot be stressed enough the dangers involved when working in the vicinity of
Overhead Power Lines (OHPLs). Some of our machines are capable of reach in
excess of 8 metres (26’); they have the potential to well exceed, by possibly 3 metres
(9’ 9”), the lowest legal minimum height of 5.2 metres from the ground for 11,000 and
33,000 volt power lines.
Remember electrocution can occur without actually coming into contact with a power
line as electricity can ‘flashover’ when machinery gets close to it.
WARNING: All operators must read the following information and be
aware of the risks and dangers involved when working in the vicinity
of Overhead Power Lines (OHPLs).
Wherever possible the safest option is always to avoid working in areas close to
OHPLs.
Where unavoidable, all operators must perform a risk assessment and implement a
safe procedure and system of work –see following page for details.
All operators should perform a risk assessment before operating the machine within
10m horizontal distance of any OHPLs.
Minimum Heights for Overhead Power Lines
Absolute Minimum Exclusion Zones for Specific Overhead Power Lines

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Definitions of Exclusion Zones
Risk Assessment
Before starting to work near OHPLs you should always assess the risks. The
following points should be observed;
Know the risks of contacting OHPLs and the risk of flashover.
Find out the maximum height and maximum vertical reach of your machine.
Find out the location and route of all Power Lines within the work area.
Find out the operating voltage of all Power Lines within the work area.
Contact the local Distribution Network Operator (DNO) who will be able to advise
you on the operating voltage, safe minimum clearance distance for working and
additional precautions required.
Never attempt operate the machine in an exclusion zones.
Always work with extreme caution and plan your work ahead to avoid high risk
areas.
If doubt exists do not work in the area –never risk the safety of yourself or others.
Emergency Action for Accidents Involving Electricity
Never touch an overhead line - even if it has been brought down by machinery, or
has fallen. Never assume lines are dead.
When a machine is in contact with an overhead line, electrocution is possible if
anyone touches both the machine and the ground. Stay in the machine and lower
any raised parts in contact or drive the machine out of the lines if you can.
If you need to get out to summon help or because of fire, jump out as far as you
can without touching any wires or the machine - keep upright and away.
Get the electricity company to disconnect the supply. Even if the line appears
dead, do not touch it - automatic switching may reconnect the power.
Further information and leaflets on this and other agricultural safety subjects
are available on the ‘Health & Safety Executive’ website at the following
address: www.hse.gov.uk/pubns/agindex.htm

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Safety Recommendations 2
Lighting Kits
For additional safety, rear mounted lighting kits are already fitted as standard. For
more detailed information, contact the Department of Transport or your local
Highways Authority.
Warning Signs
You are advised to display clear warning signs to indicate the type of machine when
working in public places. The signs should be carefully placed at either end of the
work site to give advanced warning of the hazard.
Contact your local Highways Authority or Department of Transport for more
information.
Roadwork guidelines
On two-way roads, one set of signs should face the traffic in each direction.
Work should be within 1 mile of the signs.
Work only when visibility is good and at times of low risk, e.g. NOT during rush hour.
Vehicles should show an amber flashing light.
Vehicles should be conspicuously colored.
Debris should be removed from the road or path at regular intervals and the operator
should wear high visibility clothing.
Collect all warning signs promptly when the job is finished.
Training
It is the responsibility of the Spearhead dealer to provide instruction on the safe
installation, operation and maintenance of the machine in the first instance. Further
training is available from Spearhead Machinery Ltd on request, at cost.
Tractor Requirements
Check your tractor size and minimum weight on the Specification table (pg 5).
Before hitching, ensure position control is selected. DO NOT attempt to hitch
in draft control.
Set wheel width as wide as possible.
Front and offside ballast weight is to be fitted within tractor manufacturer’s
recommended requirements.
Check chains and stabilisers must be in good working order
to hold the machine firmly. Do not operate without ensuring
that chains and stabilisers are tight.
Spearhead particularly recommend ‘turn buckle’ type
stabiliser.
Before fitting a front mounted machine to your tractor, seek
advice from your manufacturer or dealer to check it’s
suitability and whether additional linkage, ballast, or weight
requirements may be needed.

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A linkage isolation facility is necessary for all models. Set linkage lift rods to
an equal length.
All machines require a 12v fused supply. A 30 amp DIN connector is
provided, but if not, the lead should be taken directly to the vehicle battery.
Avoid cigarette lighter plugs as they are unsuitable. The supply cable has a
red wire for positive (+ve) and black wire for negative (-ve)
Spearhead particularly recommend “Category 2” three point linkage of ball
end type, we do not advise the use of claw type hitching. The quick release
latches should be checked, if worn or insecure they may cause accidental
damage or personal injury if the machine becomes detached.
The machine is sold to suit Cat. 2 linkage, some modification may be
necessary before mounting on Category 3 linkage.
Ensure tractor link arms can be isolated from accidental lifting.
Note
For machines fitted with an oil cooler it is important to connect a separate lead direct
from the battery to the oil cooler control box.
Lifting Points for use with pallet forks.
Attaching your machine to the tractor –Using Axle
mounting
Warning
It is most important the operator fully understands the procedure for
attaching/un-attaching the reach mower to/from the tractor. The
following text must be fully understood before attempting to attach the
machine. If there is any doubt please contact your supplying dealer or
Spearhead Service Department. Failure to follow the correct procedure
To attach/unattached the machine could result in personal injury or machine damage. Any
resulting damage to a machine is not covered by warranty.
Always be sure to select a level firm surface, such as concrete before attaching to the tractor.
When operating the tractor or machine’s controls do so only when seated in the tractor cab.
Do not allow anyone to stand on or amongst linkage for any reason.

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FollowinstructionsfromPicture1.ifyouhaveaxlemounting.
FollowinstructionsfromPicture9.ifyouhave3pointlinkagemounting
Fitting axle brackets
1. Mount axle brackets as instructed on
separate fitting sheet specific to your
tractor type.
2. Detach tractor draft links.
4. Assemble sub frame to suit axle width 1m
or 1.1m, mount sub frame assembly to your
machine using bottom pin holes.
3. Fit lift-in hitch assembly

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Please Note
6. Open catch
5. Offer up frame to tractor and adjust to give
required length. Distance “X” to be kept to the
minimum ensuring the machine is close
coupled, as a guide set the same as original.
Attach tractor lift links to frame with suitable
pins.
Please Note
The hole sizes may not match the
tractor links, this will not matter as
machine weight is carried on the stabiliser
frame when fully mounted.
7. Ensure top link is fitted to prevent machine
from tipping over before raising. Lift sub frame
until it engages in the catches Note: You may
mount sub frame to the tractor first and follow
procedure in step 9.
8. Insert latch locking pin

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Attaching your machine to the tractor –when using 3
Point Linkage
9. Reverse tractor and attach lower link arms by
inserting lower linkage pins into the bottom set of
holes.
10. Spearhead strongly recommend mounting the
control unit to the seat in place of the armrest to the
head side of the tractor. Modification and additional
bracket may need to be fabricated Consult your local
dealer for advice.
An electric 12-volt supply cable will be needed from a
30-amp source.
To power controls and a separate 12 volt supply
direct from the battery to the oil cooler.
11. Fit stabiliser yoke to the tractor’s top hitch
bracket. Standard bracket Cat 3, use conversion
bush supplied for Cat 2, alternative bracket
available to suit 28mm.
12. Place the stabiliser tubes on to the
machine chassis using the pins. Engage the
stabiliser bars and attach to stabiliser yoke. Be
sure the stabiliser bars are free to slide. Do not
fit locking pins.

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13. Fit top link between the machine and the
stabiliser yoke.
14. Lift the machine up on the tractor’s
hydraulics until both PTO stub shafts are
approximately in line. PTO angle may vary
between tractor makes - up to 17° above
horizontal is acceptable to ensure there is
enough ground clearance.
15. Check the machine is level, ensuring both
stabiliser bars are of equal length. Fit locking
pins to both stabilisers (use a pry bar to twist
tube if necessary).
Once the stabilising bars are correctly fitted,
lower the tractor hydraulics allowing all the
weight of the machine to be carried by the
stabiliser bars

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16. If fitting the PTO shaft for the first time
measure and cut to the correct length.
Example: A (900mm minus 75mm)
= 825mm
17. Fit the PTO shaft connecting the tractor
output shaft to the machine input shaft.
Warning
Always stop the engine and ensure the PTO
drive is disengaged before fitting the PTO.
Ensure the PTO does not bottom out when raising the
machine, serious damage will result.
Remove slew
locking pin
18. Remove locking pin from slew post before
operating the machine, and slew forward
19. Operate the main arm to bring the frame
horizontal by lowering the head weight to the
ground.