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Engine starts badly
or runs irregularly
Device does not
move
The blade does not
rotate
Strong vibrations
during operation
Irregular noises
Spark plugs are sooted, dam-
aged, or incorrect electrode
gap.
Housing of the mower is
jammed.
No oil pressure:
Too little engine oil.
No oil pressure:
Slope too steep.
Poor quality, dirty, or old fuel.
Choke is closed.
Air filter is dirty.
Poor quality, dirty, or old fuel.
Spark plug is sooted, dam-
aged, or incorrect electrode
gap.
The drive is unlocked.
Hydrostatic drive is overheat-
ed.
Lever for cutting height ad-
justment in transport position.
Electromagnetic clutch has
insufficient voltage.
V-belt is insufficiently ten-
sioned or damaged.
Unbalance at the blade
caused by incorrect sharpen-
ing or chips on the blade.
Blade drive shaft is bent due
to collisions with foreign ob-
jects.
Engine fastening is loose.
Blade fastening is loose.
Loose fastening elements.
Clean spark plugs and check electrode
gap (see also Maintenance and clean-
ing). Replace spark plugs if necessary.
See also Maintenance and cleaning.
Check engine oil level, refill.
Bring the device into a level position.
Clean fuel system (authorised service
centre).
Always use fresh fuel.
Open the choke.
Maintain air filter (see also Mainte-
nance and cleaning).
Always use fresh fuel.
Clean spark plug and check electrode
gap (see also Maintenance and clean-
ing). Replace spark plug if necessary.
Lock the drive.
Cool down (see also Maintenance and
cleaning).
Lower lever for cutting height adjust-
ment to the desired cutting height.
Let engine run for some time at medi-
um speed or charge battery.
Authorised service centre.
Have blade resharpened and balanced
by an authorised service centre. Re-
place a damaged blade immediately.
Authorised service centre.
Authorised service centre.
Authorised service centre.
Authorised service centre.
31
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