55
DEFRNLITESPTNOSVFIDAPLSKHUSR EN
0478 111 9937 B - EN
Fault:
Engine overheating
Possible cause:
– Oil level in engine too low
– Cooling ribs dirty
Remedy:
– Perform an engine oil change if
necessary @
– Clean cooling ribs (Ö 11.3)
Fault:
Poor cut, lawn turning yellow
Possible cause:
– Mowing blade is blunt or worn,
– Rate of feed is too high in relation to the
cutting height
– Engine speed is too low
Remedy:
– Re-sharpen or replace mowing blade
(Ö 11.6)
– Reduce rate of feed and/or select
correct cutting height (Ö 9.), (Ö 7.3)
– Set the throttle lever to the Start
position (Ö 10.1)
Fault:
Mowing channel blocked
Possible cause:
– Mowing blade is worn
– Mowing grass which is too long or too
wet
– Engine speed is too low
Remedy:
– Replace the mowing blade (Ö 11.6)
– Adapt the cutting height and mowing
speed to the mowing conditions (Ö 9.),
(Ö 7.3)
– Set the throttle lever to the Start
position (Ö 10.1)
Fault:
Excessive vibration during operation
Possible cause:
– Cutting unit defective
– Mowing blade imbalance
– Engine mounting loose
Remedy:
– Check mowing blade, blade shaft and
blade fastening screws; tighten blade
fastening screws (Ö 11.7)
– Re-sharpen/replace mowing blade
(Ö 11.8)
– Tighten engine mounting bolts #
Fault:
Petrol runs out of the tank cap when the
machine is placed in the cleaning position
Possible cause:
– Tank ventilation screw was tightening
too firmly
Remedy:
– Replace tank cap #
19.1 Handover confirmation
19.2 Service confirmation
Please hand this instruction manual
to your STIHL specialist dealer in
the case of maintenance operations.
He will confirm the service operations
performed in the pre-printed boxes.
19. Service schedule
Service performed on
Next service date
31
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