Allett BUFFALO 24" Product manual

BY
BUFFALO 20”, 24” & 27”
OPERATORS & PARTS MANUAL
English version
Turfmech Machinery Limited
Hangar 5, New Road, Hixon, Stafford, ST18 0PJ, United Kingdom
Tel: [phone]
Fax: [phone]
[email protected].uk
www.turfmech.co.uk
For Allett spare parts
Tel: [phone] or 272093
Fax: [phone]
[email protected]k
www.allett.co.uk

ATTENTION
THIS SYMBOL MEANS
BE ALERT!
YOUR SAFETY IS INVOLVED
READ THIS MANUAL BEFORE USING AN ALLETT BUFFALO CYLINDER MOWER.
IT IS ESSENTIAL THAT OPERATORS STUDY IT FOR THEIR OWN SAFETY.

Contents Page
Introduction……………………………………………………………………………..1
Model and serial number……………………………………………………….. 1
EC Conformity Information…………………………………………………………..2
EC Declaration of Conformity………………………………………………………..3
Safety Precautions……………………………………………………………………. 4
Health and Safety at Work Act….…………………………………………….. 4
Training………………………………………………………………………….. 4
Preparation……………………………………………………………………… 5
Decal positions…………………………………………………………………. 6
Operation………………………………………………………………………... 7
Operation……...………………………………………………………………………...9
Operator controls…………………………………………………………………9
Adjusting the handlebars……………………………………………………….. 9
Parking brake……………………………………………………………………..9
Starting the engine…………………………………………………………….. 10
Engaging forward travel………………………………………………………..11
Engaging the cutting cylinder drive..……………………………………….....11
Cleaning the mower…………………………………………………………….12
Adjusting the bottom blade…………………………………………………….12
Cylinder and bottom blade grinding / reconditioning………………………..14
Adjusting the height of cut……………………………………………………..15
Maintenance…………………………………………………………………………...16
Safety notice…………………………………………………………………….16
Maintenance Schedule………………………………………………………………18
Daily Checks / Maintenance.. ………………………………………………………19
Checking engine oil level………………………………………………………19
Checking the air cleaner condition……………………………………………19
Checking the fuel level…………………………………………………………20
Checking belt / chain guards…………………………………………………. 20
Checking the cutting cylinder………………………………………………….20
Testing the parking brake……………………………………………………...21
Testing the ignition on / off switches………………………………………….21
Weekly Maintenance…………………………………………………………………22
Check fastener torques………………………………………………………...22
Cleaning the fuel sediment bowl………………………………………………22
Cleaning the air filter element………………………………………………… 23

Monthly Maintenance………………………………………………………………. 23
Checking the chains and belts……………………………………………….. 23
6 Month Maintenance…………………………………………………………….... 24
Checking the spark plug………………………………………………………. 24
Yearly Maintenance………………………………………………………………… 24
Replacing the spark plug……………………………………………………… 24
Replacing the air filter elements……………………………………………… 24
Replacing the engine oil………………………………………………………. 24
Miscellaneous Maintenance……………………………………………………….. 25
Adjusting cable tensions……………………………………………………….25
Changing the drive belts……………………………………………………….26
Changing the cutter belts………………………………………………………26
Setting the compound sprocket……………………………………………….27
Cylinder and bottom blade servicing………………………………………….27
Storage………………………………………………………………………………… 28
Preparing the machine for storage……………………………………………28
Preparing the engine for storage……………………………………………...29
Removing from storage………………………………………………………...29
Troubleshooting………………………………………………………………………30
Specifications…………………………………………………………………………31
Parts Manual…………………………………………………………………………..32
Chassis…………………………………………………………………………..36
Cutting Cylinder, Bottom Blade and Front Roller……………………………38
Engine and Drive Shaft………………………………………………………...42
Drive Train Components……………………………………………………….44
Parking Brake…………………………………………………………………...50
Handlebars and Control Cables……………………………………………....52
Rear Drive Roller………………………………………………………………..56
Grassbox………………………………………………………………………...60
Notes……………………………………………………………………………………62

1
Introduction
The Buffalo mower is a petrol engine powered, self propelled machine with a belt and
chain driven differential rear roller. The cutting cylinder is belt driven.
The Buffalo mower is a product of exceptional quality and is designed solely for
cutting grass. Use in any way other than that stated is considered contrary to the
intended use. Compliance with and strict adherence to the conditions of operation,
service and repair as specified in this Operators Manual also constitute essential
elements of the intended use.
The way in which the Buffalo mower is operated and maintained will have a great
effect on its performance and reliability.
A Buffalo mower should be operated, serviced and repaired only by persons who are
familiar with its particular characteristics and who are familiar with the relevant safety
procedures.
The safety precautions outlined in this manual and all other generally recognised
regulations on safety must be observed at all times.
Any arbitrary modifications carried out to a Buffalo mower may relieve Turfmech
Machinery Limited of liability for any resulting damage or injury.
This manual is based on information available at the time of publication.
Turfmech Machinery Limited reserves the right to amend product specifications
without prior notification.
Model type and serial number
The model type can be found in two places:
1. On the top cover of the mower.
2. On the serial number plate located on the right side of the mower chassis.
ENTER YOUR INFORMATION BELOW
Model:
Serial Number:

2
EC Conformity Information
Noise levels
Operator’s daily personal noise exposure:
Turfmech Machinery Limited has no control over site conditions, duration of use, level
of maintenance or adjustment of the Buffalo. All of these factors will affect the
operator’s daily personal noise exposure level (L
EP,d
).
Under typical working conditions operators could be exposed to a daily personal noise
exposure level in excess of 98 dB(A) L
EP,d
.
Sound power level:
The maximum sound power level is 98 dB(A) measured in accordance with EC
Directive 2000/14/EC.
Ear protectors with good attenuation in the 63 – 8000 Hz frequency range should be
used.
Employers of personnel using the Buffalo mower are advised to read and understand
the HSE publication ‘Noise at Work: Guidance for employers on the control of noise at
work regulations 2005’ as the operator’s daily personal noise exposure level could be
above the ‘First Action Level’.
HAND ARM VIBRATION LEVELS
Operator’s daily personal vibration exposure:
Model Vector Sum m/s
2
EAV hrs/mins
ELV hrs/mins Exposure points/hr
BU27 4.46 2hrs 31 min 10hrs 3min 40
BU24 5.05 1hrs 58 min 7hrs 51min 51
BU20 3.58 3hrs 58min 15hrs 36min 26
Under typical working conditions operators of the Buffalo Mowers will be exposed to
hand arm vibration levels as listed in the above table.
However, Turfmech Machinery Limited have no control over site conditions, duration
of use, state of maintenance or adjustment of the mower. All of these factors will affect
the operator’s daily personal vibration exposure level. For best results the mower must
be correctly maintained and should be operated at the lowest engine speed possible.
Ensure the isolation mounts and handlebar springs are in good condition.
Employers of personnel using the mower are advised to read and understand the HSE
publication ‘Hand Arm Vibration: Control of Vibration at Work Regulations 2005’.

3
EC Declaration of Conformity
Turfmech Machinery Limited, Hangar 5, New Road, Hixon, Staffordshire, ST18 0PJ,
England declare that the grass mowing equipment:
Model Buffalo mower
Category Pedestrian controlled turf mower
Type Cylinder
Engine Manufacturer Honda
Speed of rotation 3000 RPM
Complies with the provisions of Directive 2006/42/EC Essential Health and Safety
Requirements Relating to the Design and Construction of Machinery and Safety
Components.
Also Directive 2000/14/EC Noise emission in the environment by equipment for use
outdoors.
Standards used BS EN 836:1997, BS EN ISO 12100:2003 parts 1 and 2.
Authorised signature
Austin Y. Jarrett
Managing Director
17/04/09
Technical documentation kept at Turfmech Machinery Limited, Hangar 5, New Road,
Hixon, Staffordshire, ST18 0PJ, England.

4
Safety Precautions
Health and Safety at Work Act
In accordance with section 6 of the Health and Safety at Work Act 1974 the Buffalo
has been designed and constructed so that, in so far as is reasonably practical, it will
not endanger the safety and health of those working with it. However, this is subject to
the equipment being properly used and maintained according to the conditions stated
in this manual and other supporting literature (e.g. engine manual), which have been
found necessary as a result of the research and testing of Turfmech Machinery
Limited and Allett.
Training
READ THIS MANUAL BEFORE USING THE BUFFALO MOWER. IT IS
ESSENTIAL THAT OPERATORS STUDY IT FOR THEIR OWN SAFETY.
THE FOLLOWING PRECAUTIONS MUST BE TAKEN TO HELP PREVENT
ACCIDENTS. A CAREFUL OPERATOR WHO USES COMMON SENSE IS
THE SAFEST OPERATOR.
Read the instructions carefully. Be familiar with the controls and the proper use
of the equipment. Learn how to stop the mower quickly in an emergency.
Never allow children or people unfamiliar with these operating instructions to
use the mower or its attachments. Local regulations may restrict the age of the
operator.
Be alert while people, especially children, or animals are nearby.
Bear in mind that the operator is responsible for accidents or hazards
occurring to other people or their property.
Do not attempt to ride on the mower or carry passengers.
All operators should seek and obtain professional and practical instruction.
Such instruction should emphasise:
-The need for care and concentration while working with the Buffalo mower.
-The need to slow down when making tight turning manoeuvres, particularly
on slopes. Failure to take adequate care can affect stability leading to loss
of control of the mower.
-Control of a machine sliding on a slope will not be regained by the
application of the brake. The main reasons for loss of control on a slope
are:
-Insufficient grip between roller and ground.
-Being driven too fast.
-Lack of awareness of ground conditions.

5
Preparation
While operating the equipment always wear substantial footwear and long
trousers. Do not operate the equipment when barefoot or wearing open
sandals.
Ear protection should be worn when the engine is running.
Eye protection should be worn whilst mowing.
Thoroughly inspect the area that is to be cut and remove all objects which are
likely to cause damage to the machine.
Never operate the mower unless all guards are correctly in place and securely
fastened.
Before use check the bottom blade and cylinder. Replace or sharpen if
necessary.
Petrol is highly flammable, therefore:
-Store fuel in containers specially designed for this purpose.
-Refuel outdoors only and do not smoke while refuelling.
-Add fuel before starting the engine. Never remove the cap from the fuel
tank or add petrol while the engine is running or while the engine is hot.
Allow the engine to cool for at least two minutes before refuelling. Be
aware that the engine exhaust silencer will remain hot for some time after
the engine is switched off.
-Do not attempt to start the engine if petrol is spilled or a smell of petrol is
present. Move the machine away from the area of spillage and avoid
creating any source of ignition until the petrol vapours have dissipated.
-Always use fresh fuel.
-Replace the fuel tank cap securely.

6
Decal Positions
Description - Large Allett logo
Location - Grass box
Quantity - 1
Description - Small Allett logo
Location - front plate on the handle bars
Quantity - 1
Description - Blade adjuster information
Location - Above LH/RH bottom blade
adjusting bolts
Quantity - 2
Description - Blade hazard decal
Location - Centre of grass deflector
Quantity - 1
Description - On/off switch
Location - Upper handlebar
Quantity - 1

7
Safety Notice
Operation
Do not operate the engine in a confined space where dangerous carbon
monoxide fumes can collect.
Mow only in daylight or in good artificial light.
Before starting the engine, disengage drive to the cutting cylinder and the rear
drive roller and engage the parking brake.
Watch out for traffic when crossing or near roadways.
Always disengage drive to the cylinder before travelling over any surface other
than grass.
When using the mower, never direct the discharged material towards
bystanders or allow anyone near the machine whilst it is in operation.
Never operate a mower with defective guards.
Do not attempt to increase the factory set maximum speed of the engine.
Operating an engine at excessive speed will lead to increased wear and tear
and increases the risk of injury.
Before leaving the operator position:
-Disengage drive to the rollers.
-Disengage drive to the cylinder.
-Engage the parking brake.
-Set engine rpm to minimum.
-Switch the on/off switch on the handlebars to the OFF position.
Engage the parking brake, disengage drive to the cutting cylinder, switch off
the engine and ensure the cylinder is completely stationary:
-Before releasing blockages.
-Before checking, cleaning or working on the machine.
-After striking a foreign object inspect the mower for damage and rectify
any problems before continuing.
-Before refuelling.
-Before making cutter head adjustments.
If the machine starts to vibrate abnormally STOP immediately and check the
machine over.
Never park the machine on a slope.

8
Reduce the throttle setting during run out.
Always wear suitable protective clothing.
ALWAYS KEEP HANDS AND FEET WELL AWAY FROM A
ROTATING CUTTING CYLINDER.
IF IN DOUBT ABOUT THE SAFE OPERATION OR
MAINTENANCE OF YOUR ALLETT MOWER, CONTACT
TURFMECH MACHINERY LTD OR YOUR AUTHORISED
ALLETT DEALER.
Remember – a careful operator who uses common sense is the safest
operator.

9
Operation
Operator controls
1. Parking brake
2. Cutting cylinder drive clutch
3. Handlebar
4. Rear roller drive clutch
5. On/off switch.
6. Throttle control
Adjusting the handle bars
•Loosen the four bolts at the base of the upper
handle bar.
• Move the handle bar into the desired position .
•Tighten the four bolts.
•To achieve the lowest hand arm vibration
levels, set the lower handle springs.
•Adjust the spring tension (using the cam
adjuster at the bottom of the handlebars) so
the handles ‘float’ just off the rubber stops.
Parking brake
•To engage the parking brake, pull the red lever
rearwards.
•Tighten the lock handle by rotating it clockwise
in order to hold the brake lever in place.
2
3
4
5
6
1

10
Starting the engine
Before starting the engine:
•Ensure that the drives to the rear roller and cutting cylinder are disengaged.
•Check that the parking brake is engaged.
•Check that the engine switch and
handlebar switches are in the ON
position.
•Turn the fuel to the ON position.
•Move the choke lever to the CLOSED
position.
•Do not use the choke if the engine
is warm or air temperature is high.
•Move the throttle control slightly forward.
•Pull the starter grip lightly until resistance is felt, then pull briskly.
•Do not allow the starter grip to snap back against the engine. Return it gently
to prevent damage to the starter.
•As the engine warms up gradually move the choke back to the OPEN position.
•To stop the engine during normal operation use the handlebar on/off switch.
REFER TO YOUR ENGINE MANUAL FOR DETAILED INSTRUCTION ON THE
CORRECT AND SAFE OPERATION OF YOUR ENGINE.

11
Engaging forward travel
•Start the engine.
•Set the engine to approx ¼ throttle.
•Push the drive clutch fully forwards with the right
hand.
•Travel speed depends on engine speed. Adjust the
travel speed by adjusting the engine throttle lever to
the desired position. Do not attempt to control
forward speed with the clutch as this will cause
premature belt failure.
Engaging the cylinder drive
•Pull the cylinder drive clutch fully back to the handlebar with the left hand to
engage the cylinder drive.
•For mowing operation the cylinder should be engaged first with the left hand
and then forward travel should be engaged with the right hand.

12
Cleaning the mower
When cleaning the mower avoid pressure washing. Use low pressure water or
compressed air.
After pressure washing it is important that the cylinder bearings are purged of water.
This can be done by applying a small amount of grease using a hand pump. Note that
over-greasing will damage the seals.
Damage caused by over greasing is not covered by the Turfmech Machinery Limited
warranty.
Adjusting the bottom blade
WARNING - PREVENT ACCIDENTS
Always wear suitable safety gloves when handling the cylinder.
•Tilt the mower backwards.
•Hold a thin piece of paper between the edge of the bottom blade and the
cutting cylinder.
•Turn the cutting cylinder slowly.
•If the blade is set properly the paper should cut cleanly along its full length. If it
does not then proceed as described below.
•Locate the two bottom blade adjusters.
These are positioned at the front of the mower just under the grass deflector
flap as shown.

13
•
The adjusters alter the gap between the bottom blade
and the cutting cylinder. Rotate the adjuster clockwise
to increase the gap. Rotate the adjuster anti-clockwise
to decrease the gap.
Clockwise
Anti-clockwise
•Adjust the clearance between the bottom blade and the cutting cylinder so
that the paper is cleanly cut at all points across the blade. The cylinder
should still turn without undue resistance. Frequently use the paper test
between each adjustment.

14
WARNING - PREVENT DAMAGE. Do not over tighten – the cylinder
should be able to spin freely.
•If you are still unable to cleanly cut the paper, inspect the bottom blade and
cylinder. If they appear rounded or damaged they may need to be
sharpened.
WARNING - PREVENT DAMAGE. Before starting the engine after having
tilted the mower, allow it to sit level for a short time to allow the engine
oil to settle.
WARNING - PREVENT DAMAGE.
The adjusters can sometimes become very tight and may be hard to turn, if
this is the case:
•Slacken off the grub screw on
the collar behind the adjuster as
shown.
•rotate the adjuster anti-clockwise
1/8
th
of a turn.
•Tighten the grub screw.
•Check the adjuster – it should
now be easier to turn.
•Carry out blade adjustment as
described above.
Cylinder and bottom blade grinding/reconditioning
The cutting performance of the Buffalo mower is highly dependent on the condition of
both the cylinder and bottom blade. Poorly maintained parts will lead to a poor quality
of cut.
It is advised that the grinding / reconditioning of the cylinder and bottom blade be
carried out by either Turfmech Machinery Limited or an authorised Allett dealer.
The bottom blade of this machine should be ground at zero degrees to the horizontal.