Timberwolf TW 125PH User manual

CONTENTS
Section Page No.
INTRODUCTION 1
PURPOSE OF MACHINE 2
MACHINE DIMENSIONS & SPECIFICATIONS 2
PARTS LOCATION DIAGRAMS 3 & 4
SAFE WORKING 5
Operator’s Personal Protective Equipment Required 5
Basic Woodchipping Safety 5
General Safety Matters - Do’s and Dont’s 6
Noise Test 7
OPERATING INSTRUCTIONS 8
Safe Transportation 8
Hitching onto the Tow Ball 8
Unhitching the Chipper 8
Delivery 9
Operator’s Personal Protective Equipment Required 9
Manual Controls 9
Auto Controls 10
Emergency Stopping 10
Engine Controls 10
Hydraulic Oil Lever Indicator 10
Petrol Tank Indicator 10
Daily Checks Before Starting 10
Before Using the Chipper 11
Starting the Engine 11
Stopping the Engine 11
Starting to Chip 12
Chipping 12
Blockages 12
SERVICE INSTRUCTIONS 13
Service Schedule 14
Engine Servicing 15
Safe Maintenance 15
Safe Lifting of the Chipper 15
Spares 15
Battery Removal and Maintenance 15
Check Fittings 15
Copper Ease Safety Information 16
Battery Safety Information 16
Change Blades 18
Tension Belts 19
Change Hydraulic Oil and Filter 19
Grease the Roller Spline and Bearing 20
Grease the Roller Box Slides 20
Greasing Rotor Bearings 20
Engine Manufacturer’s Handbook 20
Check Hoses 20
WARRANTY STATEMENT 21
EC DECLARATION OF CONFORMITY CERTIFICATE 22
IDENTIFICATION PLATES 23
DECALS 24 & 25
ELECTRICAL DETAIL 26
CIRCUIT DIAGRAM 27
HYDRAULIC LAYOUT 28
PARTS LISTS 30 - 43
7th October 09

TIMBERWOLF 125PH 1
Thank you for choosing this Timberwolf brushwood chipper. Timberwolf chippers are
designed to give safe and dependable service if operated according to the instructions.
Before using your new chipper, please take time to
read this manual which contains
IMPORTANT HEALTH AND SAFETY INFORMATION
and explains the chipper controls. Failure to do so could result in:
- personal injury
- equipment damage
- damage to property
- a member of the general public becoming injured
This manual covers the operation and maintenance of the Timberwolf TW 125PH. All
information in this manual is based on the latest product information available at the
time.
All the information you need to operate the machine safely and effectively is contained
within pages 3 to 12. Ensure that all operators are adequately trained for operating
this machine, especially with regard to safe working practices.
Timberwolf's policy of constantly improving their products may involve major or minor
changes to the chippers or their accessories. Timberwolf reserves the right to make
changes at any time without notice and without incurring any obligation.
Due to improvements in design and performance during production there may be, in
some cases, minor discrepancies between the actual chipper and the text in this manual.
The manual should be considered a permanent part of the
machine and should remain with it if the machine is resold.
CAUTION or WARNING
Be aware of this symbol and where shown,
carefully follow the instructions.
This caution symbol indicates important safety messages in this manual. When
you see this symbol, be alert to the possibility of injury to yourself or others, and
carefully read the message that follows.
Always follow safe operating and maintenance practices
INTRODUCTION
!

Serial No. Location
The serial number can be
found on the identification
plate located on the chassis
beam.
The Timberwolf TW 125PH brushwood chipper is designed to chip solid wood material up to 125
mm in diameter. It is capable of chipping over 2 tonnes of brushwood per hour.
1600 mm
DIMENSIONS
2270 mm
3165mm (2625mm with feed tray folded)
1335 mm
PURPOSE OF MACHINE
TIMBERWOLF TW 125PH SPECIFICATION
Engine type: Honda v-twin petrol
Maximum power: 14.9kW (20hp)
Cooling method: Air cooled
Overall weight: 575kg
Starting method: Electric
Roller feed:Twin hydraulic motor
Max. diameter material:125 mm (5”)
Fuel capacity: 18 litres
Hydraulic oil capacity: 15 litres
Material processing capacity: 2 tonnes/hr
Fuel type: Unleaded petrol
TIMBERWOLF 125PH 2

PARTS LOCATOR 3
SAFETY BAR
FEED TRAY
FUNNEL
ROLLER BOX
COVER
DISCHARGE
BUCKET
DISCHARGE
TUBE
SPARE WHEEL
BELT GUARD
ROTOR HOUSING
DISCHARGE
CLAMP NUTS
LIGHT BOARD
CONTROL BOX
BATTERY BOX
COVER
ENGINE

PARTS LOCATOR 4
ROTOR
PROP STAND
JOCKEY
WHEEL
ASSEMBLY
BREAKAWAY
CABLE
BATTERY
FAN
SECTION (x2)
HYDRAULIC
OIL TANK
TOW HEAD
CUTTER
BLADE (x2)
ROTOR DRIVE
PULLEY
FUEL TANK
HYDRAULIC
PUMP
HYDRAULIC
PUMP BELT
ADJUSTER
ENGINE
SHAFT
BELT TENSION
ADJUSTER
ENGINE
PULLEY
HYDRAULIC
OIL FILTER
ROLLER BOX
DIRECTIONAL
CONTROL
VALVE

SAFE WORKING 5
OPERATOR'S PERSONAL PROTECTIVE EQUIPMENT REQUIRED
Chainsaw safety helmet fitted
with mesh visor and
recommended ear defenders to
the appropriate specifications.
Work gloves with elasticated
wrist.
Close fitting heavy-duty
non-snag clothing.
Face mask if
appropriate.
DO NOT
wear rings, bracelets, watches,
jewellery or any other items that
could be caught in the material
and draw you into the chipper.
BASIC WOODCHIPPING SAFETY
The operator should be aware of the following points:
MAINTAIN A SAFETY EXCLUSION ZONE around the chipper of at least 10 metres for the
general public or employees without adequate protection. Use hazard tape to identify this
working area and keep it clear from debris build up. Chips should be ejected away from any
area the general public have access to.
HAZARDOUS MATERIAL - Some species of trees and bushes are poisonous. The chipping
action can produce vapour, spray and dust that can irritate the skin. This may lead to
respiratory problems or even cause serious poisoning. Check the material to be chipped before
you start. Avoid confined spaces and use a facemask if necessary.
BE AWARE when the chipper is processing material that is an awkward shape. The material
can move from side to side in the funnel with great force. If the material extends beyond the
funnel, the brash may push you to one side causing danger. Badly twisted brash should be
trimmed before being chipped to avoid thrashing in the feed funnel.
BE AWARE that the chipper can eject chips out of the feed funnel with considerable force.
Always wear full head and face protection.
ALWAYS work on the side of the machine furthest from any local danger, e.g. not road side.
WARNING
The chipper will feed material through on its own. To do this, it relies on sharp
blades both on the feed rollers and the chipper rotor. To keep the blades
sharp, only feed the machine with clean brushwood. DO NOT put muddy/dirty
wood, roots, potted plants, bricks, stones or metal into the chipper. !
!
Steel toe cap safety boots.

SAFE WORKING 6
GENERAL SAFETY MATTERS
DO NOT operate chipper unless available light is
sufficient to see clearly.
DO NOT use or attempt to start the chipper with-
out the feed funnel, guards and discharge unit
securely in place.
DO NOT stand directly in front of the feed funnel
when using the chipper. Stand to one side.
DO NOT allow -
DO NOT smoke when refuelling.
DO NOT let anyone who has not received instruc-
tion operate the machine.
DO NOT climb on the machine at any time.
DO NOT handle material that is partially engaged
in the machine.
DO NOT touch any exposed wiring while
machine is running.
DO NOT use the chipper inside buildings.
- to enter the machine, as damage is likely.
ALWAYS stop the chipper engine before making
any adjustments, refuelling or cleaning.
ALWAYS check rotor has stopped rotating and
remove chipper ignition key before maintenance
of any kind, or whenever the machine is to be left
unattended.
ALWAYS check the machine is well supported
and cannot move.
ALWAYS operate the chipper with the engine set
to maximum speed when chipping.
ALWAYS check (visually) for fluid leaks.
ALWAYS take regular breaks. Wearing personal
protective equipment for long periods can be tir-
ing and hot.
ALWAYS keep hands, feet and clothing out of
feed opening, discharge and moving parts.
ALWAYS use the next piece of material or a push
stick to push in short pieces. Under no circum-
stances should you reach into the funnel.
ALWAYS keep the operating area clear of people,
animals and children.
ALWAYS keep the operating area clear from
debris build up.
ALWAYS keep clear of the chip discharge tube.
Foreign objects may be ejected with great force.
ALWAYS ensure protective guarding is in place
before commencing work. Failure to do so may
result in personal injury or loss of life.
ALWAYS operate the chipper in a well ventilated
area - exhaust fumes are dangerous.
!
DO’S AND DON’TS
BRICKS STRING CLOTH PLASTIC STONES
METAL GLASS RUBBER ROOTS BEDDING
PLANTS



SAFE WORKING
MACHINE:
NOTES:
TW 125PH
TESTED CHIPPING 65 mm X 75 mm CORSICAN PINE
1.5m IN LENGTH
NOISE TEST
7
Noise levels above 80dB (A) will be experienced at the working position. Wear ear protection
at all times to prevent possible damage to hearing. All persons within a 4 metre radius must
also wear good quality ear protection.
93.3 dB
95.2 dB
96.3 dB96.6 dB
R= 4 metres
Guaranteed Sound Power: 120dB (A)
101.5 dB
96.8 dB
As required by Supply of Machinery (safety) regulations of 2008.
R= 10 metres
9
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WHEN towing a chipper the maximum speed limit is 60 mph.
ON rough or bumpy road surfaces reduce speed accordingly to protect your machine from
unnecessary vibration.
WHEN towing off road be aware of objects that may catch the chipper undergear.
WHEN towing off road ensure inclination is not excessive.
AVOID excessively pot holed ground.
WHEN reversing the chipper the short wheel base will react quickly to steering.
ALWAYS check the discharge is tight before moving.
KEEP tyre pressures inflated to 2.2 bar or 32 psi.
CHECK wheel nuts are tightened to 90Nm or 65 lbs ft.
CLEAR loose chippings and debris from the machine before departing.
ENSURE feed funnel is closed and the catch is properly engaged before departing.
CHECK ball head is well greased.
WIND jockey wheel assembly anticlockwise until the tow head is above the height of the ball
hitch on the vehicle.
REVERSE vehicle so the ball hitch is directly below the tow head.
ATTACH breakaway cable to a strong point on the vehicle, not the ball hitch.
GRASP handle on tow head and push back catch with thumb.
WIND jockey wheel assembly clockwise, to lower the tow head onto the ball hitch.
RELEASE handle and continue to wind jockey wheel clockwise. The tow head should snap
into place on the ball hitch. If it doesn't, repeat previous 2 steps.
WIND jockey wheel up until fully retracted and the jockey wheel frame is seated in its notch on
the stem. The chipper weight should be fully on the vehicle.
RELEASE jockey wheel clamp and slide the jockey wheel assembly fully up.
TIGHTEN clamp on jockey wheel assembly.
CONNECT electrical plug to socket on rear of towing vehicle and check operation of all the
trailer and vehicle lights.
THE chipper is now properly attached to the vehicle.
WARNING
DO NOT RIDE ON THE CHIPPER WHEN IT IS BEING TOWED.
!!
OPERATING INSTRUCTIONS 8
SAFE TRANSPORTATION
HITCHING ONTO THE TOW BALL
ENSURE the chipper will not roll away after being disconnected from the vehicle. Use the
chocks provided if in doubt.
DISCONNECT the electrical cable from the vehicle socket.
RELEASE breakaway cable.
RELEASE the jockey wheel assembly clamp.
LOWER the jockey wheel assembly fully.
RETIGHTEN the jockey wheel assembly clamp.
WIND the jockey wheel assembly anticlockwise until it starts to take the weight of the chipper.
GRASP the handle and release the catch with your thumb.
CONTINUE to wind the jockey wheel anticlockwise. This should lift the tow head clear of the ball hitch.
DRIVE the vehicle clear of the chipper.
WIND the jockey wheel assembly to a suitable point where the chipper is level.
THE chipper is now fully detached from the vehicle.
UNHITCHING THE CHIPPER

OPERATING INSTRUCTIONS 9
DELIVERY
All Timberwolf TW 125 machines have a full pre - delivery inspection before leaving the factory and are
ready to use. Read and understand this instruction manual before attempting to operate the chipper.
In particular, read pages 5-7 which contain important health and safety information and advice.
OPERATOR’S PERSONAL PROTECTIVE EQUIPMENT REQUIRED
MANUAL CONTROLS
CHAINSAW safety helmet fitted with visor
and recommended ear defenders to an
appropriate specification.
HEAVY-DUTY gloves with elasticated wrist
area.
CLOSE - FITTING heavy-duty non-snag clothing.
SAFETY footwear.
FACE MASK (if appropriate).
See page 5 for more detailed information.
Control Panel Diagram
Roller control box - is the control box above the feed opening of the chipper funnel. Its function is to control
the feed rollers. The feed rollers draw material into the machine. It does not control the main rotor.
RED SAFETY BAR = This is the large red bar that surrounds the feed tray and side of the feed
funnel. The bar is spring loaded and connected to a switch that will interrupt the power to the rollers.
The switch is designed so that it only activates if the bar is pushed to the limit of its travel. The rollers
stop instantly, but can be made to turn again by pressing either the GREEN FEED or BLUE REVERSE
control buttons.
RED SAFETY BAR TEST
To ensure the safety bar is always operational it must be activated once before each work session.
The rollers will not function until the bar is activated. This procedure must be repeated each time the
ignition is switched off.
GREEN BUTTON = Forward feed - Push the button once - this activates the rollers and will allow you
to start chipping (if the rotor speed is high enough).
RED BUTTON = Emergency stop - This button stops the rollers from feeding. It overrides all other
buttons or bars and will not allow the other buttons to function until it has been reset. To reset, pull out until
it returns to its original position. The forward and reverse buttons will now function.
BLUE BUTTON = Reverse feed - allows you to back material out of the rollers. The rollers will only
turn in reverse as long as you keep pressing the button. You do not have to press the STOP button
before pressing the GREEN FEED button to recommence feeding.
GREEN
FORWARD
FEED
PANEL
BLUE
REVERSE
FEED
PANEL
RED STOP FEED - EMERGENCY
STOP BUTTON
RED SAFETY BAR
P
U
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H
T
O
S
T
O
P
P
U
L
L
T
O
R
E
S
E
T
Do not rely on the red bar to keep the rollers stationary if it is
necessary to clear or touch the rollers. Always switch off the
machine and remove ignition key before approaching the rollers.
WARNING
DO NOT remove, jam, disable, bypass, override or otherwise
impede the effectiveness of the red safety bar.
!!

OPERATING INSTRUCTIONS 10
AUTO CONTROLS
The no stress unit controls the feed rate of the material going into the chipping chamber. If the rotor
speed is below the predetermined level, the no stress unit will not allow the feed rollers to work in
either forward or reverse, until the rotor speed rises above the predetermined level. At this point, the
feed rollers will start turning without warning.
Push the RED STOP button or push the RED SAFETY BAR (whichever is the quickest for you
to reach). Turn off the engine ignition key.
The emergency stop will prevent any more material being fed into the chipper. The rotor will still be
turning. The engine must be powered down to stop the rotor.
EMERGENCY STOPPING
ENGINE CONTROLS
This label indicates the speed setting of
the chipper. With the throttle lever in
the fast position (hare) the machine is
ready to chip.
When the machine is not in use for
short periods of time move the lever to
the idle position (tortoise) or turn off
completely.
FAST
SLOW
O1
OFF ON
START
PETROL TANK INDICATOR
The fuel level may be inspected by removing the fuel filler cap and looking into the tank.
HYDRAULIC OIL LEVEL INDICATOR
The oil level will be visible through the tank wall. It should be within the
upper and lower level marks.
MAX
MIN
LOCATE the machine on firm level ground.
CHECK machine is well supported and cannot move.
CHECK jack stand is lowered and secure.
CHECK all guards are fitted and secure.
CHECK the discharge unit is in place and fastened securely.
CHECK discharge tube is pointing in a safe direction.
CHECK the feed funnel to ensure no objects are inside.
CHECK feed tray is in up position - to prevent people reaching rollers.
CHECK controls as described below.
CHECK (visually) for fluid leaks.
CHECK fuel and hydraulic oil levels.
For parts location see diagrams on pages 3 & 4.
DAILY CHECKS BEFORE STARTING

OPERATING INSTRUCTIONS 11
BEFORE USING THE CHIPPER
IT IS ESSENTIAL TO CARRY OUT THE FOLLOWING TESTS to check safety equipment - this
sequence of tests will only take a few seconds to carry out. We recommend that these tests are
carried out daily. Observing the function as described will confirm that the safety circuits are working
correctly. This is also a good opportunity to remind all operators of the control and emergency stop
systems.
4
7
568
23
PRESS THE GREEN
BUTTON
THE ROLLERS
SHOULD RUN
PRESS THE RED BAR
THE ROLLERS
SHOULD STOP
PRESS THE BLUE BUTTON
THE ROLLERS SHOULD TURN
BACKWARDS ONLY WHILE THE
BUTTON IS PRESSED
PRESS THE GREEN BUT-
TON AGAIN
THE ROLLERS
SHOULD RUN
PRESS THE EMERGENCY
RED BUTTON
THE ROLLERS
SHOULD STOP
PRESS THE BLUE BUT-
TON
THE ROLLERS
SHOULD NOT TURN
PULL TO RESET
THE RED BUTTON
THE MACHINE IS
READY TO USE
1
PRESS THE RED
BAR TO POWER
THE CONTROL
SYSTEM
WITH THE ENGINE RUNNING AT FULL SPEED
STOPPING THE ENGINE
SET engine to idle position.
ALLOW to run for at least one full minute.
SWITCH off and remove ignition key.
For more detailed information refer to the Engine Owner’s Manual
STARTING THE ENGINE
FOR A COLD ENGINE:
Place the throttle control at 1/3 throttle and pull the
choke out.
Insert ignition key into starter switch.
Turn the key to start the engine. Release the key as
soon as the engine starts.
Gradually return the choke to the off position as the
engine starts and warms up. Allow the engine to warm
up for at least one minute before chipping.
FOR A WARM ENGINE:
Follow the instructions for a ‘cold engine’ but return the
choke to the off position as soon as the engine starts.
If engine fails to start after 10 seconds leave for 1
minute and try again.
CHOKE
STARTER
SWITCH
THROTTLE LEVER

OPERATING INSTRUCTIONS 12
STARTING TO CHIP
WARNING
Do not use or attempt to start the chipper without the protective guarding
and discharge unit securely in place. Failure to do so may result in per-
sonal injury or loss of life.
!!
Always be aware that what you are putting into the chipper must come out. If the chips stop coming
out of the discharge tube but the chipper is taking material in - STOP IMMEDIATELY. Continuing to
feed material into a blocked machine may cause damage and will make it difficult to clear.
If the chipper becomes blocked, proceed as follows:
STOP the engine and remove the ignition keys.
REMOVE the discharge tube. Check that it is clear.
WEARING gloves, reach into the rotor housing and scoop out the majority of the debris
causing the blockage.
REPLACE the discharge tube.
RESTART the engine and increase to full speed.
ALLOW machine time to clear excess chips still remaining in rotor housing before you
continue feeding brushwood. Feed in a small piece of wood while watching to make sure
that it comes out of the discharge. If this does not clear it, repeat the process and carefully
inspect the discharge tube to find any obstruction.
NOTE
Continuing to feed the chipper with brushwood once it has become blocked will cause the chipper to
compact the chips in the rotor housing and it will be difficult and time consuming to clear.
AVOID THIS SITUATION - WATCH THE DISCHARGE TUBE AT ALL TIMES.
!!
WARNING
Do not reach into the rotor housing with unprotected hands. There are sharp
blades and any small movement of the rotor may cause serious injury.
CHECK that the chipper is running smoothly.
RELEASE the catches on the feed tray and
lower. Pull to release the red stop button.
PERFORM the “before using the chipper”
tests (see page 11).
PRESS the green control button. The
rollers will commence turning.
STAND to one side of the feed funnel.
PROCEED to feed material into the feed
funnel.
CHIPPING
Wood up to the recommended diameter can be fed into the feed funnel. Put the butt end in first and
engage it with the feed rollers. The hydraulic feed rollers will pull the branch into the machine quite
quickly. Large diameter material will have its feed rate automatically controlled by the no stress unit.
Sometimes a piece of wood that is a particularly awkward shape is too strong for the feed rollers to
break. This will cause the top roller to either bounce up and down on the wood, or both rollers to stall.
If this occurs, press the BLUE REVERSE button until the material has been released. Pull the
material out of the feed funnel and trim it so the chipper can handle it.
Both feed rollers should always turn at the same speed. If one or both rollers stop or suddenly slow
down it may be that a piece of wood has become stuck behind one of the rollers. If this occurs, press
the BLUE REVERSE button and hold for 2 seconds - then repress GREEN FEED button. This should
enable the rollers to free the offending piece of material and continue rotating at the correct speed. If
the rollers continue to stall in the 'forward feed' or 'reverse feed' position push the RED STOP
BUTTON, turn the engine off, remove the ignition key and investigate.
BLOCKAGES

SERVICE INSTRUCTIONS 13
THE FOLLOWING PAGES DETAIL ONLY
BASIC MAINTENANCE GUIDELINES SPECIFIC
TO YOUR CHIPPER.
THIS IS NOT A WORKSHOP MANUAL.
THE FOLLOWING GUIDELINES ARE NOT EXHAUSTIVE AND DO NOT EXTEND
TO GENERALLY ACCEPTED STANDARDS OF ENGINEERING/MECHANICAL
MAINTENANCE THAT SHOULD BE APPLIED TO ANY PIECE OF MECHANICAL
EQUIPMENT AND THE CHASSIS TO WHICH IT IS MOUNTED.
AUTHORISED TIMBERWOLF SERVICE AGENTS ARE FULLY TRAINED IN ALL
ASPECTS OF TOTAL SERVICE AND MAINTENANCE OF TIMBERWOLF WOOD-
CHIPPERS. YOU ARE STRONGLY ADVISED TO TAKE YOUR CHIPPER TO AN
AUTHORISED AGENT FOR ALL BUT THE MOST ROUTINE MAINTENANCE AND
CHECKS.
TIMBERWOLF ACCEPTS NO RESPONSIBILITY FOR THE FAILURE OF THE
OWNER/USER OF TIMBERWOLF CHIPPERS TO RECOGNISE GENERALLY
ACCEPTED STANDARDS OF ENGINEERING/MECHANICAL MAINTENANCE
AND APPLY THEM THROUGHOUT THE MACHINE.
THE FAILURE TO APPLY GENERALLY ACCEPTED
STANDARDS OF MAINTENANCE, OR THE PERFORMANCE
OF INAPPROPRIATE MAINTENANCE, MAY INVALIDATE
WARRANTY IN WHOLE OR IN PART.
PLEASE REFER TO YOUR AUTHORISED
TIMBERWOLF SERVICE AGENT FOR
SERVICE AND MAINTENANCE.
! !
! !

SERVICE SCHEDULE
Check water. 
Check engine oil - top up if necessary (10W-30). 
Check for engine oil / hydraulic oil leaks. 
Check fuel level. 
Check feed funnel, feed roller cover, access covers,
engine covers and discharge unit are securely fitted. 
Check blades. 
Ensure engine air intake is free from leaf build up. 
Check tyre pressure is 2.2 Bar (32 psi). 
Check tension of main drive belts
(and tension if necessary). 
Grease the roller box slides. 
Grease the roller spline and bearing. 
Clean air filter element. 
Check safety bar mechanism. 
Check for tightness all nuts, bolts and fastenings
making sure nothing has worked loose. 
Check fuel pipes and clamp bands. 
Check battery electrolyte level. 
Change engine oil.
Replace engine oil filter cartridge.
Replace spark plugs.
Check valve clearance.
Replace fuel pipes and clamp bands.
Check for loose electrical wiring. 
Replace hydraulic oil filter - every year or 100 hours
after service or repair work to the hydraulic system. 
Replace hydraulic oil. 
Axle maintenance.
Tow head maintenance.
Daily
Check
25
Hours
50
Hours
100
Hours
200
Hours
1
Year
REFER TO YOUR ENGINE
SUPPLIERS MANUAL
REFER TO SUPPLIERS
INSTRUCTION SHEET
NOTE: Your Timberwolf woodchipper is covered by a full 12 months parts and labour warranty.
Subject to correct maintenance and proper machine usage, the bearings are guaranteed for 12
months regardless of hours worked by the machine. In conditions of 'heavy usage' - i.e. in excess of
500 hours per year - it is recommended that the bearings are changed annually to ensure that the
machine retains optimum working performance.
SERVICE INSTRUCTIONS 14
AFTER THE FIRST
25 HOURS THEN:
WARNING
Always immobilise the machine by stopping the engine, removing the ignition
key and disconnecting the battery before undertaking any maintenance work.
SERVICE SCHEDULE
!
!
OR AS REQUIRED - SEE PG. 20
OR AS REQUIRED - SEE PG. 20

HANDLE blades with extreme caution to
avoid injury. Gloves should always be
worn when handling the cutter blades.
THE drive belts should be connected
while changing blades, as this will restrict
sudden movement of the rotor.
THE major components of this machine
are heavy. Lifting equipment must be
used for disassembly.
CLEAN machines are safer and easier to
service.
AVOID contact with hydraulic oil.
SERVICE INSTRUCTIONS
ALWAYS IMMOBILISE THE ENGINE BEFORE UNDERTAKING ANY MAINTENANCE
WORK ON THE CHIPPER BY REMOVING THE KEY AND DISCONNECTING THE BATTERY.
SAFE MAINTENANCE
Only fit genuine Timberwolf replacement blades, screws and chipper spares. Failure to do so
will result in the invalidation of the warranty and may result in damage to the chipper,
personal injury or even loss of life.
SPARES
15
ENGINE SERVICING
Ensure servicing is performed in accordance with the Engine Manufacturer’s Handbook.
BATTERY REMOVAL AND MAINTENANCE
WARNING
Refer to the battery safety section on pages 16-17. !
!
1. Remove the four M8 screws that retain the battery box top.
2. Remove the negative lead first and then the positive lead.
3. Clean, charge and/or top up the battery as required.
4. Refitting is the reverse of removal. Apply a smear of petroleum jelly to the terminals to
prevent corrosion.
The Timberwolf TW 125PH is subject to large vibrations during the normal course of operation.
Consequently there is always a possibility that nuts and bolts will work themselves loose. It is
important that periodic checks are made to ensure the security of all fasteners. Fasteners should be
tightened using a torque wrench to the required torque (see below). Uncalibrated torque wrenches
can be inaccurate by as much as 25%. It is therefore essential that a calibrated torque wrench
is used to achieve the tightening torques listed below.
CHECK FITTINGS
Size Pitch Head Torque Ibft Torque Nm
Blade Bolts M10 Standard T50 Torx 45 61
Hyd Motor Retaining Bolts M10 Standard 17mm Hex 34 46
Funnel Retaining Nuts M12 Standard 17mm Hex 38 51
General M8 Standard 13 mm Hex 17 23
General M10 Standard 17 mm Hex 34 46
General M12 Standard 19 mm Hex 60 80
SAFE LIFTING OF THE CHIPPER
The lifting eye is designed to lift the machine’s weight only. Do not use
hoist hook directly on the lifting eye, use a correctly rated safety shackle.
Inspect the lifting eye prior to each use - DO NOT USE LIFTING EYE IF
DAMAGED.

SERVICE INSTRUCTIONS 16
WARNING NOTES AND SAFETY REGULATIONS FOR FILLED LEAD-ACID BATTERIES
For safety reasons, wear eye protection
when handling a battery.
Keep children away from acid and
batteries.
Fires, sparks, naked flames and smoking are
prohibited.
-Avoid causing sparks when dealing with cables
and electrical equipment, and beware of
electrostatic discharges.
-Avoid short circuits, otherwise:
Explosion hazard:
-A highly explosive oxyhydrogen gas mixture is
produced when batteries are charged.
Corrosive hazard:
-Battery acid is highly corrosive, therefore:
-Wear protective gloves and eye protection.
-Do not tilt the battery, acid may escapefrom the
vent openings.
First aid:
-Rinse off acid splashed in the eyes immediately
for several minutes with clear water! Then
consult a doctor immediately.
-Neutralise acid splashes on the skin or clothes
immediately with acid neutraliser (soda) or soap
suds, and rinse with plenty of water.
-If acid is swallowed, consult a doctor immediately.
Warning notes: The battery case can become brittle, to
avoid this:
-Do not store batteries in direct sunlight.
-Discharged batteries may freeze up, therefore
store in an area free from frost.
Disposal:
-Dispose of old batteries at an authorised
collection point.
-The notes listed under item 1 are to be followed
for transport.
-Never dispose of old batteries in household
waste.
BATTERY SAFETY INFORMATION
Product name: Copper Ease.
Copper Ease contains no hazardous ingredients at or above regulatory disclosure limits, however,
safety precautions should be taken when handling (use of oil-resistant gloves and saftey glasses are
recommended - respiratory protection is not required). Avoid direct contact with the substance and
store in a cool, well ventilated area avoiding sources of ignition, strong oxidising agents and strong
acids. Dispose of as normal industial waste (be aware of the possible existance of regional or national
regulations regarding disposal), do not discharge into drains or rivers.
In case of fire: in combustion the product emits toxic fumes, extinguish with alcohol or polymer foam,
carbon dioxide or dry chemical powder. Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.
FIRST AID
Skin contact: there may be mild irritation at the site of contact, wash immediately with plenty of soap
and water.
Eye contact: there may be irritation and redness, bathe the eye with running water for 15 minutes.
Ingestion: there may be irritation of the throat, do not induce vomiting, wash out mouth with water.
A safety data sheet for this product can be obtained by writing to the manufacturer at the
following address: Comma Oil and Chemicals Ltd., Deering Way, Gravesend, Kent DA12 2QX.
Tel: [phone], Fax: [phone].
COPPER EASE SAFETY INFORMATION

SERVICE INSTRUCTIONS 17
1. Storage and transport
- Batteries are filled with acid.
- Always store and transport batteries upright
and prevent from tilting so that no acid can
escape.
- Store in a cool and dry place.
- Do not remove the protective cap from the
positive terminal.
- Run a FIFO (first in-first out)warehouse
management system.
2. Initial operation
- The batteries are filled with acid at a density of
1.28g/ml during the manufacturing process and
are ready for use.
- Recharge in case of insufficient starting power
(cf. section 4).
3. Installation in the vehicle and removal from
the vehicle
- Switch off the engine and all electrical
equipment.
- When removing, disconnect the negative
terminal first.
- Avoid short circuits caused by tools, for example.
- Remove any foreign body from the battery tray,
and clamp battery tightly after installation.
- Clean the terminals and clamps, and lubricate
slightly with battery grease.
- When installing, first connect the positive
terminal, and check the terminal clamps for
tight fit.
- After having fitted the battery in the vehicle,
remove the protective cap from the positive
terminal, and place it on the terminal of the
replaced battery in order to prevent short
circuits and possible sparks.
- Use parts from the replaced battery, such as
the terminal covers, elbows, vent pipe
connection and terminal holders (where
applicable); use available or supplied filler caps.
- Leave at least one vent open, otherwise there
is a danger of explosion. This also applies
when old batteries are returned.
4. Charging
- Remove the battery from the vehicle;
disconnect the lead of the negative terminal first.
- Ensure good ventilation.
- Use suitable direct current chargers only.
- Connect the positive terminal of the battery to
the positive output of the charger. Connect the
negative terminal accordingly.
- Switch on the charger only after the battery has
been connected, and switch off the charger first
after charging has been completed.
- Charging current-recommendation: 1/10
ampere of the battery capacity Ah.
- Use a charger with a constant charging voltage
of 14.4V for re-charging.
- If the acid temperature rises above 55o Celsuis,
stop charging.
- The battery is fully charged when the charging
voltage has stopped rising for two hours.
5. Maintenance
- Keep the battery clean and dry.
- Use a moist anti-static cloth only to wipe the
battery, otherwise there is a danger of
explosion.
- Do not open the battery.
- Recharge in case of insufficient starting power
(cf. section 4).
6. Jump Starting
- Use the standardised jumper cable in
compliance with DIN 72553 only, and follow the
operating instructions.
- Use batteries of the same nominal voltage only.
- Switch off the engines of both vehicles.
- First connect the two positive terminals (1) and
(2), then connect the
negative terminal of the
charged battery (3) to a
metal part (4) of the
vehicle requiring
assistance away from the battery.
- Start the engine of the vehicle providing
assistance, then start the engine of the vehicle
requiring assistance for a maximum of 15
seconds.
- Disconnect the cables in reverse sequence
(4-3-2-1).
7. Taking the battery out of service
- Charge the battery; store in a cool place or in
the vehicle with the negative terminal
disconnected.
- Check the battery state of charge at regular
intervals, and correct by recharging when
necessary (cf. section 4).
(1)
(2)
(3) (4)
12V 12V
BATTERY SAFETY INFORMATION...cont.

SERVICE INSTRUCTIONS 18
1. Turn the chipper off and remove the ignition keys.
2. Remove battery leads.
3. Remove bolt and washer retaining roller box
guard and lift guard.
4. Remove the two springs on the roller box slide.
5. NOTE: Rollerbox slide weighs in excess of 20kg.
Lift the roller box slide and wedge a suitably sized
piece of wood to hold in place.
6. Remove blade access cover.
7. Remove discharge tube. Turn the rotor by hand
by grasping fan section on rear of rotor disc until
blade is visible through aperture.
8. Use a small screwdriver to remove sap and debris
from Torx socket in screw - be particularly
careful to ensure every last piece has been
removed.
9. Undo blade screws using Torx socket drive
provided. Rotor will turn until Torx socket has
located on machine.
10. Before fitting replacement blades carefully
clean blade recess in rotor so that no
debris is trapped between blade and rotor.
11. When fitting blades replace any damaged
screws with new and coat each screw with
copperslip over the whole of the thread.
12. Retighten each screw to 60Nm (45lbs ft).
NOTE: This torque setting is vitally
important to ensure your bolts come out
at a later date and Timberwolf recommend
you purchase a torque wrench for this and
other jobs on the chipper.
13. Grease all surfaces of the roller box sliding
mechanism (see diagram on page 20).
14. Replace blade access cover.
15. NOTE: Rollerbox slide weighs in excess of 20kg.
Remove wedge, lower roller box slide and
replace springs.
16. Close roller box guard making sure that it is
located over the retaining bracket, and ensure
bolt and washer (as note 3) are tightened.
17. Refit battery leads.
WARNING
Wear riggers gloves for the blade changing operation.
CHANGE BLADES
!
!
4
5
6
8
9
10
3
7
WARNING
Always sharpen blades on a regular basis. Failure to do so will
cause the machine to under perform and will overload engine
and bearings causing machine breakdown. Blades must not
be sharpened beyond the wear mark (see diagram). Failure to
comply with this could result in machine damage, injury or
loss of life.
!
!
WEAR
MARK

SERVICE INSTRUCTIONS 19
TENSION BELTS
WARNING
Use plastic gloves to keep oil off skin and dispose of the used oil and filter
in an ecologically sound way. The oil and filter should be changed once a
year or at any time it becomes contaminated. Before starting check that the
chipper is standing level and brush away loose chips.
CHANGE HYDRAULIC OIL AND FILTER
!!
1. Remove the black screw cap from the top of the
filter housing.
2. Partially remove filter element from inner cup. Leave
filter to drain for 15 minutes.
3. Remove filter element from cup when clear of hydraulic oil.
4. Remove drain plug and drain oil into a suitable container.
5. Replace drain plug.
6. Refill with VG 32 hydraulic oil until the level is between
the min and max lines on the tank (about 15 litres).
7. Refit the filter cup, install a new filter element and refit
the black screw cap, to the filter housing, ensuring
o-ring remains in place.
2
1
4
NOTE: This is a non-adjustable
air breather filter.
2
3
TENSION HYDRAULIC PUMP BELT
1. Remove belt guard.
2. Access the two nuts on the under side of the chassis and slacken
using a 19 mm socket spanner.
3. Adjust the M8 bolt on the outside plate until the desired tension is
achieved. For instructions on checking belt tension & correct belt
tension values, please refer to the Timberwolf V-Belt Tensioning
Data Table (pg. 43).
4. Retighten the two nuts to (80 Nm) 60 lbs/ft.
5. Refit belt guard.
2
3
NOTE: There will normally be a rapid drop in tension during run-in period for new belts. When new
belts are fitted, check the tension every 2 - 3 hours and adjust until the tension remains constant.
Belt failures due to lack of correct tensioning will not be covered under your Timberwolf warranty.
1. Remove belt guard.
2. Loosen bolt in centre of tensioner pulley with a 19mm spanner so that pulley is able to slide with
minimal wobble.
3. Turn nut in end of tensioner pulley slider until correct belt
tension is achieved. For instructions on checking belt tension
& correct belt tension values, please refer to the Timberwolf
V-Belt Tensioning Data Table (pg. 43).
4. Retighten bolt in centre of tensioner pulley.
5. Refit belt guard.
6. Run machine and test, recheck belt tension.
7. NOTE: Slack drive belts will cause poor performance and excess
belt and pulley wear.
TENSION DRIVE BELTS