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– Remove spark plug and dry; set throttle
lever to MIN position and start several
times with spark plug removed; screw in
spark plug and connect spark plug
socket. (@)
– Clean air filter. (@)
– Check charge state of battery and
charge battery if necessary.
Fault:
Starter not functioning.
Possible cause:
– The safety devices are blocking the
starter.
– Battery not or incorrectly connected.
– Battery completely discharged or not
sufficiently charged.
– Main fuse (150 A) defective.
– Faulty earth connection to engine or
chassis.
– Starter defective.
Remedy:
– Check all the safety devices. (
– Check battery connections. (
– Charge the battery. (
– Replace the main fuse. ( )
– Check the connection cables at the
battery and at the chassis. ( )
– Repair the starter. ( )
Fault:
Starting problems or deteriorating engine
power.
Possible cause:
– Water in fuel tank and carburettor;
carburettor is blocked.
– Contaminated fuel tank.
– The air filter is dirty.
– Dirty spark plug.
112
– Mowing grass which is too long or too
wet.
Remedy:
– Empty fuel tank, clean fuel tank, fuel
line and carburettor. ( )
– Clean fuel tank. ( )
– Clean/replace air filter. (@)
– Clean spark plug. (@)
– Adapt cutting level and driving speed to
the mowing conditions.
Fault:
Engine overheating.
Possible cause:
– Dirty cooling ribs.
– Engine oil level too low.
– V-belt worn.
Remedy:
– Clean cooling ribs. (@)
– Check the engine oil level and top up
the engine oil if necessary. (
– Replace the V-belt. ( )
11.)
14.19)
14.21)
Fault:
Machine does not drive.
Possible cause:
– Gearbox disengaged.
– V-belt (gearbox) detached.
– V-belt (gearbox) worn or defective.
– Missing feather key between rear axle
and rear wheels.
Remedy:
– Engage the gearbox (freewheel lever).
(
– Fit V-belt (gearbox). ( )
– Replace V-belt (gearbox). ( )
– Install feather key. (
8.14)
14.10)
Fault:
Excessive vibration during operation.
Possible cause:
– Mowing blade imbalance due to
incorrect sharpening or damage.
– Blade fastening screw not fastened
tightly.
– Engine mounting not securely
tightened.
– V-belt damaged.
– Discharge chute blocked.
Remedy:
– Re-sharpen mowing blade and balance
or replace mowing blade. (
– Tighten blade fastening screw to the
specified torque. (
– Tighten engine mounting. ( )
– Replace V-belt. ( )
– Clean discharge chute. ( )
14.13)
Fault:
Poor cut, lawn turns yellow after mowing.
Possible cause:
– Mowing blade blunt or worn.
– Driving speed too fast in relation to
mowing conditions (cutting height, lawn
condition).
– Maximum engine speed not set (throttle
lever not in MAX position).
– Mowing deck adjustment not OK.
– Discharge chute blocked.
– Mowing deck soiled with grass residues
(deposits on inside of mowing deck
housing).
Remedy:
– Sharpen or replace mowing blade
(observe wear limits). (
– Reduce driving speed and select a
higher cutting height.
– Set throttle lever to the MAX position.
(
8.2)
14.7)
14.7)
14.7)
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