Stihl RL 540, Instruction Manual

Page: 44 / 529

0478 670 9907 B - EN
42
– Dirty or damaged spark plug; incorrect
electrode gap
Remedy:
– Press motorstop lever to handlebar and
hold ( Ö 10.1)
– Top up fuel; clean fuel line ( Ö 7.3),
(
@
), (
#
)
– Place scarifying unit in transport
position ( Ö 7.5)
– Always use fresh, good quality fuel,
unleaded petrol; clean carburettor (
@
),
(
#
)
– Clean air filter (
@
), (
#
)
– Connect spark plug socket; check
connection between ignition lead and
socket (
@
), (
#
)
– Clean or replace spark plug; adjust
electrode gap (
@
), (
#
)
Fault:
Starting problems or deteriorating engine
power
Possible cause:
– Scarifying unit not in transport position
– Blocked scarifier housing
– Mowing at an excessive working depth
or excessively fast pushing speed
– Water in fuel tank and carburettor;
blocked carburettor
– Contaminated fuel tank
– Dirty air filter
– Dirty spark plug
Remedy:
– Place scarifying unit in transport
position ( Ö 7.5)
– Clean scarifier housing (detach spark
plug socket!) ( Ö 11.2)
– Set smaller working depth or reduce
pushing speed ( Ö 7.6)
– Empty fuel tank, clean fuel line and
carburettor (
@
), (
#
)
– Clean fuel tank (
@
), (
#
)
– Clean air filter (
@
), (
#
)
– Clean spark plug (
@
), (
#
)
Fault:
Engine overheating
Possible cause:
– Oil level in engine too low
– Dirty cooling ribs
Remedy:
– Check oil level and change engine oil if
necessary ( Ö 7.3)
– Clean cooling ribs ( Ö 11.2)
Fault:
Excessive vibration during operation
Possible cause:
– Defective scarifying unit
– Loose engine mounting
Remedy:
– Check blades, blade shaft, spacer
bushings, fastening and bearings of
scarifying unit and repair if necessary
(
Ö 11.3), (
#
)
– Tighten engine mounts (
#
)
Fault:
Poor working results
Possible cause:
– Blades set too deep (bare patches, high
grass content in scarified material)
– Blade set too shallow (little or no lawn
thatch is removed)
– Blades have reached wear limit
– V-belt defective, worn or insufficiently
tensioned
Remedy:
– Reduce working depth (
Ö
7.6)
– Increase working depth ( Ö 7.6)
– Replace blades ( Ö 11.3), (
#
)
– Replace V-belt (
#
)
Fault:
Blades not turning freely
Possible cause:
– V-belt defective
– Scarifying unit defective
Remedy:
– Replace V-belt (
#
)
– Repair scarifying unit ( Ö 11.3), (
#
)
Fault:
Scarifying unit cannot be raised or lowered
Possible cause:
– Cable defective or detached
Remedy:
– Replace or repair cable (
#
)
Fault:
Working depth cannot be set
Possible cause:
– Scarifying unit in operating position
– Rotary handle or adjustment element
defective
Remedy:
– Place scarifying unit in transport
position ( Ö 7.5)
– Repair rotary handle or adjustment
element (
#
)