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The material weakens, can suffer cracks, en-
dangering people and material assets. Ejected
broken pieces can cause severe injuries.
Unusual vibrations are an indication that
– blades are missing or broken,
– the blade is worn excessively or on one side
or
– damage to the engine or cutter deck fasten-
ing.
Blade change
1
1
2
2
It is absolutely necessary to change the blade:
– When one of the wear markings (
1
) was
reached. Original blades are engraved with
wear markings (marking in form of a ball-
shaped imprint on the rear side of the
blade).
– When the thickness of the blade at the rear
edge of the vane (
2
) or at another point is
below 1 mm (exception: cutting edge).
Original blade
An original AS-blade is engraved with:
AS XXXXXXXX
The engraving shows the spare part number.
Checking the blade clutch
Check the blade clutch for proper function by
disengaging the blade. The blade must come
from full speed to a standstill in less than
7 seconds. Contact an authorised service
centre if this is not the case.
Maintenance specifically for
4-stroke device
Maintaining the engine
Warning
If the speed of rotation is set too high, ob-
jects can be ejected. The engine can be
damaged and noise pollution increases.
► Do not change the basic setting of the
carburetor or the speed control.
The engine manufacturer has prepared the op-
erating manual of the engine. The manual con-
tains all maintenance requirements and war-
ranty conditions for the engine. If warranty
work at the engine is required, contact your au-
thorised service centre or the next authorised
dealer for engines.
To ensure a long service life of the engine, suf-
ficient engine cooling is required.
Keep the
- engine cover (ventilation grid),
- silencer (protective grid) and
- cooling fins of the engine
clean at all times.
Checking the engine oil level
Never allow the oil level to be too low other-
wise the engine can be damaged. Never fill in
too much oil. Otherwise, there is the risk that
the oil enters and destroys the air filter.
For this, observe the attached operating in-
structions of the engine.
