Hansa C5 User guide

HANSA NEW ZEALAND
[phone] [e-mail]
www.hansachippers.com
HANSA AUSTRALIA
1800 248 199 [e-mail]
www.hansachippers.com.au
HANSA NEW ZEALAND
[phone] [e-mail]
www.hansaproducts.co.nz
HANSA AUSTRALIA
1800 426 722 [e-mail]
www.hansaproducts.com.au
Operation, maintenance and safety manual
All operators must fully read and understand
this operator’s manual before using the chipper.
Keep this manual for future reference.

Hansa C5 O&M Manual - OM-025 Revision A 13/02/20
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TABLE OF CONTENTS
WHAT CAN MY HANSA CHIPPER PROCESS?..................................................................................................................................1
INTENDED USES OF THE CHIPPER ...............................................................................................................................................................1
RECEIVING YOUR HANSA CHIPPER ...............................................................................................................................................1
CHIPPER COMPONENTS........................................................................................................................................................................... 1
ASSEMBLY............................................................................................................................................................................................3
SAFETY .........................................................................................................................................................................................4
OPERATOR COMPETENCY.........................................................................................................................................................................5
IDENTIFYING HAZARDS AND RISKS ..............................................................................................................................................................5
OPERATION..................................................................................................................................................................................6
SAFE SETUP PROCEDURE..........................................................................................................................................................................6
SAFE OPERATING PROCEDURE...................................................................................................................................................................7
STARTING PROCEDURE ............................................................................................................................................................................8
SHUTDOWN PROCEDURE .........................................................................................................................................................................9
PETROL................................................................................................................................................................................................ 9
PROCESSING FIBROUS MATERIAL ...............................................................................................................................................................9
STORAGE.................................................................................................................................................................................... 10
TRANSPORTATION ..................................................................................................................................................................... 10
TROUBLESHOOTING................................................................................................................................................................... 10
WHAT TO DO IF:.................................................................................................................................................................................. 10
MAINTENANCE........................................................................................................................................................................... 11
KNIFE RE-SHARPENING AND KNIFE REPLACEMENT .......................................................................................................................................11
REMOVE THE KNIFE FOR SHARPENING ......................................................................................................................................................12
SHARPEN THE KNIVES............................................................................................................................................................................ 13
REINSTALL THE KNIVES .......................................................................................................................................................................... 13
ENGINE SERVICING ...............................................................................................................................................................................15
ENGINE OIL......................................................................................................................................................................................... 15
BELT TENSION..................................................................................................................................................................................... 16
BELT REPLACEMENT.............................................................................................................................................................................. 17
BOLT TORQUE .....................................................................................................................................................................................18
SPECIFICATIONS ......................................................................................................................................................................... 19
DECALS....................................................................................................................................................................................... 20
HANSA GLOBAL INDUSTRIAL LIMITED WARRANTY..................................................................................................................... 21
COMMISSIONING CHECKLIST AND REGISTRATION ..................................................................................................................... 23

Hansa C5 O&M Manual - OM-025 Revision A 13/02/2020
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What can my Hansa chipper process?
Intended uses of the chipper
The Hansa C5 chipper is built to process organic material including wooden branches not exceeding 60 mm in diameter. It is
designed for intermittent use by the suburban gardener. Do NOT use the chipper for any other purpose.
Organic wastes include:
Prunings, stalks, roots, vegetable matter, hay, grass, bark
Dry manure
Branches
Palm fronds
Dead and hard timbers (Note: these will dull the knives faster)
Paper or cardboard
Do NOT process:
Bones
Soil, root balls, sand, grit, stones, metal
If you have any questions, contact your authorised dealer.
Do NOT exceed 60 mm branch diameter
Receiving your Hansa chipper
You may receive your chipper assembled from your dealer or it may be packaged in two boxes. Assembly takes approximately 30
minutes, two people working together will make the assembly easier.
Chipper components

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Tools required for assembly (not supplied)
•A knife to cut open the box
•Two 13 mm spanners - to tighten the inlet chute
Box 1 contains:
✓The chipper body
✓Axle/wheel assembly
✓Fastener pack
Box 2 contains:
✓The inlet chute
✓A fastener pack containing parts required for assembly
✓Documentation (Hansa operations manual, warranty card and Honda motor manual)
CAUTION: The chipper body weighs 53 kg; it is recommended to cut the box open rather than lifting the body out.
Box 1
Box 2
All the C5 parts in two separate boxes
Contents in box 2
Inlet chute
Documentation
Fastener pack
Contents in box 1
Chipper body
Axle
Fastener pack

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Assembly
Fit the axle
Prop the base of the chipper body up on a block (or similar item)
approx. 100 mm high, so that the axle mounts are high enough off
the ground to attach the axle and wheels. Put a washer (item no.
2) onto each bolt (item no. 1), then put one bolt into each
clamping plate (item no. 3). Put the other sides of the bolt into the
lower holes of the axle mounts at the bottom of the chipper body.
Loosely attach a nyloc nut (item no. 4) to the end of the bolt
threads. Once both clamping plates are in position, place the axle
on top of the bolts between the housing and clamping plate. The
axle will rest on the shanks on the bolts (as per the image).
Item no.
Fastener pack contents (in box 1)
1
Four bolts to attach the axle
2
Two washers to attach the axle
3
Two clamping plates to attach the axle
4
Two nyloc nuts to attach the axle
Item no.
Fastener pack contents (in box 2)
5
Two bolts to attach the inlet chute
6
Two heavy washers to attach the inlet chute.
7
Two spring washers to attach the inlet chute
8
Two nuts to attach the inlet chute
1

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Place another bolt (item no. 1) through the top holes of the
clamping plate (item no. 3) and axle mount. Ensure there is a
washer (item no. 2) between the head of the bolt and the
clamping plate. Fasten a nyloc nut (item no 4) to the other end of
the bolt. Tighten all four bolts evenly using two 10mm spanners.
Do not overtighten, as this can cause the clamping plate to bend.
Check to make sure the axle is properly secured on both sides.
Fit the inlet chute
Fix the inlet chute –slide the tab at the base
of the inlet chute over the tab at the top of
the rotor housing. Adjust the inlet chute
until the holes at the back of the rotor
housing line up with the holes on the back of
the inlet chute.
Line up the holes and insert the bolts (item
no. 1), heavy washers (item no. 2), spring
washers (item no. 3), and nuts (item no. 4).
Ensure that the heavy washer is touching
the chipper body (top) and the spring
washer is touching the nut (bottom).
Safety
Preventing accidents is the responsibility of every equipment operator. The operator is responsible for any accidents or hazards
occurring to people or their property. Ensure every operator is familiar with the safe operation procedures and controls of the
machine, how to identify hazards, and the steps required to avoid injury while handling and operating the chipper. Relevant
information is contained in this manual.
Do NOT modify the design of the chipper.
2
3
4

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Operator competency
Ensure that every person operating the chipper understands and follows the safe operating and maintenance procedures
as detailed in this manual.
Do NOT allow persons below the age of 18 to operate the chipper. Additionally, local regulations may restrict the age of
the operator.
Do NOT allow persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge to
operate the machine.
Identifying hazards and risks
Identify hazards and risks, and take preventative steps to avoid accidents and minimise risk. Possible hazards include, but are not
limited to, moving parts, thrown objects, weight of chipper and components, and the operating environment.
Below is a list of hazards and actions required to prevent injury.
Hazard
Risk
Corrective action
Dust
Injury or irritation of the
eyes
Respiratory irritation
Wear safety glasses
Process freshly cut materials and/or wear a dust mask
Exhaust Fumes
Respiratory irritation
Place the chipper in a manner that the operator is not
exposed to direct exhaust fumes
Hot Exhaust
Heat burns
Keep bare hands and other body parts a safe distance away
from hot exhaust
Fire
Heat burns
Clear any build-up of chipping debris around the engine and
exhaust regularly
Belt Drive
Skin pinching and/or
abrasions
Ensure that the belt guard is in place, and keep away from
the belt
Cutting rotor and knives
Pinching, crushing, cutting,
severing
Keep your face and body out of the inlet chute
Do not extend hands/arms past the rubber flap
Use a stick to push materials into the inlet chute
Do NOT push the stick beyond the rubber flap
Sound
Damage to hearing
Always wear hearing protection when operating the
machinery
Discharge material
Eye injury, minor cuts
Always wear safety glasses when operating the machinery
Do NOT put body parts in front of outlet chute
Do NOT put the machinery in a place where the
outlet chute is directed on a hard surface
Feeding material
Cuts and scrapes
Wear safety gloves
Wear tight fitting long sleeves and pants to cover bare skin
when operating the machinery
Weight of the chipper
Straining, crushing
Place the machinery on firm level ground
Petrol, oil, grease
Poisoning, skin irritation,
harmful vapours
Take care when handling petrol, oil and grease
Wash skin if contaminated with petrol, oil or grease
Do NOT refuel the chipper in enclosed areas

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Operation
The chipper is self-feeding and has a large inlet opening. It can process:
•Prunings, stalks, vines, leaves, roots and vegetable matter, paper and cardboard
•Freshly cut material is better to process than dry material
•Maximum capacity is 60 mm diameter branches
It is helpful (but not required) to keep a wooden stick handy, approx. 50 mm diameter x 600 mm long for:
•Pushing in short, brushy and very leafy materials
•Keeping the inlet chute clear
Safe setup procedure
Before you start:
Ensure the chipper is positioned in an open area and on firm level ground.
Ensure that the outlet chute is discharged onto soft ground (e.g. grass) or an enclosed container
Do NOT allow the outlet chute to discharge chip onto hard surfaces (such as a paved or gravel surface)
Ejected material can rebound and cause injury
Keep children, pets and spectators clear of the work area at all times
Do NOT operate the chipper where there is a hazard to onlookers
Do NOT allow any person under the age of 18 to operate the chipper
Check:
That all screws, nuts, bolts, and other fasteners are properly secured
That fuel and engine oil levels are above the minimum levels
That the fuel cap is secured and there is no fuel leaking from the tank
That all chipper components are in place and in good condition
If any parts are worn or damaged, contact Hansa for replacements
That the inlet chute and housing are clear of any leftover material
That all labels are in good condition and easily legible
Replace damaged or unreadable labels
View photos of labels in the ‘Decals’ section
Refuelling:
Take extra care in handling fuels
They are flammable and vapors are explosive
Use only an approved fuel container
Always replace and securely tighten fuel cap after refuelling
Allow engine to cool down before refuelling
If you need to drain the fuel, ensure this is done outside
Do NOT smoke when using or refuelling the chipper
Never remove fuel cap or add fuel with the engine running
Never refuel the chipper indoors
Never store the chipper or fuel container inside where there is an open flame, such as a water heater
If fuel is spilled, do not attempt to start the engine. Wipe up the spilled fuel and move the chipper away from the
area of spillage before starting

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Safe operating procedure
Wear safety equipment: Safety glasses and hearing protection must be
worn at all times
Wear work gloves: Wearing work gloves is optional but highly
recommended - ensure that the gloves fit tightly
Tie long hair up
Long hair could be pulled into the chipper
Wear clothes that sit tightly
Avoid scarves and any items that can get caught in the chipper
Keep your face and body away from the inlet chute
Stand clear of the discharge zone, even when no material is being fed into the machine
Ensure the exhaust is pointing away from the working area and downwind from the operator and onlookers
Keep proper balance and footing at all times and stand at the same level as the chipper
Do NOT overreach
Do NOT run near the machine
Feed only freshly cut material into the chipper
Do NOT feed in materials covered in gravel, stones and dirt as this can rebound, injure the operator and damage
the machinery
Prune to a size that suits the chipper’s capabilities
Pre-cut side branches
Branches will ‘self-feed’ more efficiently
Keep the engine clean of debris and other accumulations
This prevents damage to the engine or possible fire
Feed limbs and branches through butt end first, leaving the foliage on
This helps guide the limb down the inlet chute
It reduces spinning and the occurrence of ejection of small pieces back up the inlet chute
Hold larger branches back and feed the chipper with care until you are familiar with its capacity
The engine will slow down or stall if the branch is too large
Feed longer pieces together with short stubby pieces
Feed soft materials intermittently with branches
The wood chips tend to clean out any soft residue left in the chipper
The chipper can clog up with soft, wet or fibrous materials
Keep the outlet free of blockage
If a blockage occurs, turn the engine off, disconnect the spark plug wire and wait for rotor to stop spinning. Open
the outlet chute and remove material until the outlet chute is clear
As the discharge material piles up
Move the chipper to direct the outlet chute away from the pile, or move the processed material
to avoid blocking
Turn off the engine whenever you leave the work area
Run the chipper in an enclosed area
Exhaust fumes contain carbon monoxide, which is poisonous, colourless, odourless, and tasteless
Operate the chipper wearing loose clothing and untied long hair
Stand at a higher level than the base of the chipper when feeding material into it
Process old materials such as dried wooden branches
They get very hard and springy when dried out
They are more awkward to handle
The knives dull much quicker
Feed short, stubby pieces of wood into the chipper
They bounce and spin in the inlet chute
Feed short stubby pieces together with longer pieces
Feed branches that are too large
The chipper can easily stall
DO:
DO NOT:

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Put soil, sand, grit, stones, glass, pieces of metal or other foreign objects into the chipper
This will damage the sharp edge of the cutting knives and can rebound and injure the operator
Put root balls and dead wood into the chipper
This dulls the knives quickly
Overload the chipper
If the cutting rotor is slowing down, feed the material in slower
Allow processed material to build up in the discharge area as this can:
Prevent proper discharge
Result in kickback of material through the feed opening
Tamper with the engine governor settings on the chipper
The governor controls the maximum safe operating speed and protects the engine and all moving parts from
damage caused by overspeed
Operate the chipper with blunt knives
This causes excessive vibration which may result in damage to the chipper
Move or tilt the machine while it is running
Remove the catcher bag while the machine is running
Touch any guards or stick hands between guards while the machine is on or connected to a power supply
Put hands or any other part of the body or clothing:
Inside the feed chute past the rubber flap
Inside or near the opening of the discharge chute
Near any moving part
Remove any guards on the chipper unless the engine is turned off and the cutting rotor has come to a complete standstill
Leave the chipper on while it is unattended
Starting procedure
Before proceeding, ensure the ‘safe setup procedure’ has been followed on page 6 of this manual.
Turn the choke lever, fuel lever,
and engine switch to the “on”
position.
Turn the throttle lever to the
“max” position.
Pull the pull cord in one smooth
motion to start the engine.
1
1
Choke lever
(“on” position)
Fuel lever
(“on” position)
2
3
Pull cord
Throttle
lever (“max”
position)

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Petrol
The chipper requires 91 unleaded
or E10 petrol to run; check the
petrol level before starting.
Processing fibrous material
The C5 can process palm fronds, flax, cabbage tree leaves and other similar fibrous material. The machine’s cutting disk is
cantilevered (supported on the engine side with two bearings), therefore there is no risk of anything fibrous wrapping around the
shaft and working its way into the bearings. The resulting output is not as consistent as that of branch material due to the fibrous
nature. When processing fibrous material, take note of the following points:
Blades must be sharp to process fibrous material
Fibrous material is best introduced to the machine as a bundle
Fibrous material should be introduced slowly into the machine. Tease the material in and out while feeding it into the
cutting mechanism, ensuring it is not drawn through the machine without being cut properly
Do NOT extend hands past the rubber flap while doing so
Fibrous material is processed more effectively when it is green rather than when dried
Once the engine is started and has
warmed up (approx. 10 seconds),
turn the choke lever to the “off”
position (as shown in the picture).
Shutdown procedure
Turn the throttle lever to the “min”
position.
Turn the engine switch to the “off”
position.
4
1
2
Throttle
lever (“min”
position)
Choke lever
(“off” position)

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Storage
Always allow the chipper to cool before storing
Store the chipper out of the reach of children
Store the chipper where fuel vapor will not reach an open flame or spark
Switch the fuel lever to the off position
For extended storage periods, run the engine dry of fuel
Store the chipper out of the rain
Water can rust the steel body of the chipper
Transportation
The C5 is designed to be moved by one person using both handles at the top of the inlet chute to lean the
chipper backwards and transfer its weight onto the wheels. The chipper can then be wheeled to and from
the work location.
Take care when moving the C5 up and down stairs or kerbs
The wheels can be damaged by the shock loading caused by uncontrolled ascent/descent
The chipper is heavy and the operator can lose control of the machine
Do NOT move the chipper while it is running
Troubleshooting
What to do if:
The chipper won’t start
•The engine oil level might be too low
The chipper is fitted with oil alert and will not start if the oil level is too low
Check the oil level and top up if required
•The chipper is placed on a slope
The chipper is fitted with oil alert and will not start if the oil is not level
Move the chipper to level ground
Belt drive engagement will not work
•The inlet chute or housing might be blocked
Turn engine off, disconnect the spark plug wire, ensure rotor has completely stopped, remove debris,
restart engine, then attempt to re-engage the belt drive
The chipper slows down and stalls
•The chipper is clogged up
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped, remove debris,
then close and lock the outlet chute
Discharge slows down
•The chipper is clogged up
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped, remove debris,
then close and lock the outlet chute
The chipper is slowing down
•The chipper can’t process the amount of material fed into it
Feed the material in slower
Reduce material volume

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The chipper will not self-feed
The knives and/or anvil might be blunt
Inspect and sharpen or replace knives and/or anvil as required. Ensure correct clearances between
knives and anvil
The material is ejected in long strips
•The knives and/or anvil might be blunt
Inspect and sharpen or replace knives and/or anvil as required. Ensure correct clearances between
knives and anvil
The chipper is clogged
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped and remove
debris. You may need to disassemble the housing in order to remove the debris. See step 9 of ‘Remove
the knife for sharpening’ on page 15 for more details on this process
The chipper starts making unusual noise, the cutting rotor strikes a foreign object, or the chipper starts to vibrate
Turn the engine off, disconnect the spark plug wire, ensure rotor has completely stopped, then inspect
for damage
Replace or repair any damaged parts
Check for and tighten any loose parts
Do NOT attempt to repair the chipper unless you are competent to do so
Maintenance
Maintain the chipper with care and keep it clean at all times.
To service or inspect the equipment, or to change an accessory, you must:
✓Switch the engine off
✓Allow the chipper to cool before any inspections or adjustments
✓Wait until the cutting rotor and engine are at a complete standstill before opening the cutting
rotor housing
✓Disconnect the spark plug wire from the spark plug
✓Switch the fuel lever to the off position
Initially after 2 working hours:
✓Check for any loose nuts and bolts
✓Check belt tension (refer to belt tension section)
The belt will stretch when it is new
✓Grease the rotor bearing
One or two pumps are sufficient
Be careful not to over grease
The bearing is already greased when the equipment is new
Use bearing grease or all-purpose grease
Every 20 working hours:
✓Check for any loose nuts and bolts
✓Check belt tension (refer to belt tension section)
✓Grease the bearing as above, be careful not to over grease
✓Check sharpness of knives
✓Check condition of the belt guard
A damaged guard must be replaced by an identical or equivalent guard immediately
It is recommended to contact Hansa for a replacement guard.
Knife re-sharpening and knife replacement
How do I know that the knives need re-sharpening?
Chipper loses its self-feeding action with blunt knives
Material has to be pushed in
Material comes out in long strips
Disconnected spark plug

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How to re-sharpen the knives:
If you don’t have a surface grinder or are unsure how to re-sharpen the knives, contact a professional saw doctor or Hansa to
arrange re-sharpening.
Tools and materials required for re-sharpening (approx. 40 mins):
•2 x 13 mm spanners
•2 x 16 mm spanners
•6 mm hexagonal Allen key
•Nylon hammer (recommended)
•Surface grinder
•Coolant
Remove the knife for sharpening
Remove the inlet chute - use two 13 mm spanners to
remove the nuts and bolts holding the inlet chute on.
Open the cutting rotor housing by removing the four
housing bolts using two 16 mm spanners.
Using a nylon hammer (or suitable alternative), gently
dislodge the housing from its grooves and remove it.
Use a 13 mm spanner to remove the knives from the
rotor. There are three nuts you must remove to do so.
If the bolt head turns, hold it with a 6 mm
hexagonal Allen key
Note:Do NOT try to loosen the bolt with the hexagonal
Allen key.
WARNING! Do NOT operate your chipper with blunt knives.
Blunt knives will cause excessive vibration
Blunt knives result in damage to the chipper
WARNING! Be careful when working around the sharp knives. Be aware that even though the engine is switched off,
the cutting means can still move.
1
2
3
4

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Measure the width of the knife and check that it will be
at least 35 mm after sharpening.
If the knife will be shorter than 35 mm, then the knife
should be replaced. Please contact your nearest Hansa
dealer.
Sharpen the knives
Sharpen the knives on a surface grinder. A cutting
angle of 40 ° is critical for the performance of the
chipper. Make sure plenty of coolant is used when
grinding to avoid softening of the steel knives.
Reinstall the knives
Clean all mounting surfaces and remount the knife in the reverse procedure. Tighten all three nuts as tight as
possible by hand using a 13 mm spanner and 6 mm hexagonal Allen key. Do NOT tighten the bolts with the
hexagonal Allen key.
Note: When blades are sharpened, material is removed from the blades, affecting the distribution of weight in
the rotor. The rotor must be balanced appropriately after blade sharpening, as per the method outlined below:
5
MIN 35 mm
6
7
40 °

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Adjust the anvil at this stage as the location
of knife edge will change after sharpening
or replacement.
The anvil is reversible. Normally the edge
will last for over 200 operating hours.
When the edge is dull, it can be reversed.
When both edges are worn, the anvil
should be replaced (contact Hansa for a
replacement).
The clearance between the knife and anvil
should be approx. 1 mm on the inside
closest to the bearing and 3 mm on the
outside closest to the edge of the rotor
(refer to diagram for more detail). Ensure
you are using the outer blade for
calibrating these distances.
8
Bearing
Edge of
rotor
Anvil
Cutting
rotor
Knife
1 mm
clearance
3 mm
clearance

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The gap between the knives and the anvil
is tapered out slightly to allow for a small
amount of movement in the rotor as it
bites into the wood.
The anvil position can be adjusted by
loosening the anvil mounting bolts. Once
adjusted correctly, tighten the anvil
mounting nuts using a torque wrench to 22
Nm.
If there is not enough clearance, the knife
edge may touch the anvil through
deflection when cutting heavy branches
and damage the sharp edge. Too much
clearance will allow small twigs and fibrous
materials to be dragged through without
being cut.
Turn the cutting rotor by hand to check
that it turns freely.
Reassemble the housing and inlet chute by
repeating steps 1-3 in reverse.
Note: When reassembling the housing, first
align the hooks on the curved wall with the
tabs near the outlet on the housing front.
Once these are aligned use a nylon
hammer (or other suitable alternative) to
hammer the back of the housing to locate
the remaining four tabs. Do not attempt to
do up the housing bolts until these tabs
have been aligned.
Engine servicing
For servicing of the engine, please refer to the Honda engine manual.
Engine oil
It is recommended you check the oil level every time you use your chipper. To check the oil level,
unscrew the oil filler cap/dipstick, clean the dipstick, then insert the dipstick without screwing it
into the thread. Fill as necessary, using the diagram as a reference. For optimal performance of
your chipper, the engine oil should be completely changed every 100 operating hours, or roughly
once every 12 months on average.
WARNING! Every time the knife clamping bolts are torqued up to 22 Nm and loosened off again, the life of the bolts is
reduced. The knife clamping bolts must be replaced at most after every six sharpens. Contact Hansa for replacement
bolts (m8x25 countersunk bolts of grade 12.9 or higher). Use only genuine Hansa bolts.
9
Align the
‘hooks’ on the
housing wall
with the tabs
in the housing
back
Align the
five
remaining
tabs

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If the engine oil needs to be changed, follow these steps:
Run the engine for 1-2 minutes in order to warm up the
oil. Switch the engine off after the oil is warm. Place a
container to the side of the engine. Remove the oil filler
cap/dipstick and oil drain plug (using a 10 mm spanner)
then let the oil drain into the container. Ensure the
machine does not lean more than 30 degrees from
vertical while doing so.
Screw the oil outlet drain plug back in and fill the engine with 0.45 Litres of SAE 10W30 or SAE 10W40 through
the oil filler cap/dipstick hole (the oil should reach the thread near the hole opening).
Using the dipstick, check the oil to make sure it is at the right level (close to the upper limit, but not over). Screw
the oil filler cap/dipstick back into the hole. Dispose of the used engine oil in an environmentally sensitive way.
Belt Tension
Correct belt tension is crucial for minimising belt wear and maximising
machine efficiency. To check the belt tension, the belt guard must first
be removed (see step 1 of ‘belt replacement’ on page 17). After the belt
guard is removed, fully engage the belt. There should be approximately
5 mm deflection in the belt when pressing firmly on the belt. If required,
adjust belt tension.
Adjusting belt tension
Using two 16 mm spanners, slightly loosen the two
clamping nuts near the bottom of the chipper. Do not
take the nuts completely off the thread.
Using a 13 mm spanner, adjust the bolt at the centre of
the machine frame box section underneath the machine
until the required belt tension is achieved. The belt
should flex by 5 mm when firmly pressing on it.
1
Oil filler
cap/dipstick
Oil drain plug
2
3
1
2
Check for
deflection
here
Clamping
nuts

Hansa C5 O&M Manual - OM-025 Revision A 13/02/2020
© Hansa Chippers 2020
17
Using two 16 mm spanners, tighten the two clamping
nuts back up near the bottom of the chipper. Recheck
belt tension.
Belt replacement
If the belts in your chipper look similar to any of the following images or are clearly broken, then they need to be replaced.
If a belt change is necessary, follow these steps
Using a 6 mm Allen key, undo the two cap screws from
the belt guard and then remove the belt guard.
Note: Engine not shown in this view
Using two 13 mm spanners, unbolt and remove the
engine (4 x M8 nuts). Replace the belt (A21 vee belt).
3
1
2
Soft, swollen belt
Cracked underside of belt
Sidewall belt wear
Worn cover on back of belt
Split belt cover
Clamping
nuts

Hansa C5 O&M Manual - OM-025 Revision A 13/02/2020
© Hansa Chippers 2020
18
Replace the engine back in place and ensure the pulleys
are in line
Fully tighten the four bolts holding the engine to the
chassis. Check the pulleys are still in line by placing a
straight-edge across the top and bottom front pulley. If
they are not in line, loosen the four bolts holding the
engine in place and repeat this step
Ensure the belts are properly tensioned (follow the
‘adjusting belt tension’ procedure on page 16). Fasten
the pulley guard back into place.
Note: Engine not shown in this view
Bolt torque
Relative Strength Bolt Marking
4.6
8.8
Recommended Tightening Torque
Recommended Tightening Torque
Bolt size
Spanner size
lb ft
Nm
lb ft
Nm
M8
13 mm
6
8.5
16
22
M10
16 mm
12.5
17
32
44
M12
18 mm
22
30
57
77
M16
24 mm
54
73
140
190
M20
30 mm
105
143
274
372
3
4
5