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58
blade for damage. Damaged or bent blades must
be replaced.
Never attempt to bend a bent blade back to
straight again. Never mow the lawn with a bent
or heavily worn blade as this will cause vibrations
and can lead to further damage to the lawn
mower.
Important: There is a risk of injury if you work
with a damaged blade.
Resharpening the blade
The blades can be resharpened with a metal file.
In order to avoid imbalance, the blade should be
resharpened by an authorized service workshop.
7.2.3 Checking the oil level (Fig. 14/15)
Important: Never run the engine with no or too
little oil. This could cause severe damage to the
engine.
Use only 15W40 engine oil.
Checking the oil level:
Stand the lawn mower on a flat level surface.
Unscrew the oil dip stick (14/Pos. A) by turning
anticlockwise, pull out and wipe. Insert the dip
stick back in the filling mount as far as the stop,
but do not screw back in. Pull out the dip stick
again and read off the oil level while holding
horizontally. The oil level must be between the
maximum (Fig. 13/Item H) and the minimum (Fig.
13/Item L). The moveable orange plastic part on
the oil dip stick provides protection against oil
foam.
Changing the oil
Change the engine oil every year before the start
of the season (in addition to the information in
the petrol service manual) when the engine is
warm.
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Important! Do not screw in the oil dipstick to
check the oil level – only insert it as far as the
thread.
Dispose of the used oil in accordance with
applicable regulations.
7.2.4 Care and adjustment of the cables
Oil the cables at regular intervals and check that
they move easily.
7.2.4.1 Adjusting the cord for the engine
brake
If you notice a drop in the performance of the
engine brake, the cord (Fig. 15/Item A) will need
readjusting.
7.2.5 Maintenance of the air filter (Fig. 16/17)
A soiled air filter will reduce the performance
of the engine because it will prevent enough
air getting to the carburetor. It is therefore
imperative that regular checks are made. The
air filter should be checked every 25 hours and
cleaned if required. If the air is very dusty the air
filter should be checked more regularly.
Important: Never clean the air filter with petrol
or inflammable cleaning agents. Clean the air
filter with compressed air or simply by knocking
out any soiling.
7.2.6 Maintenance of the spark plug (Fig. 19)
Check the spark plug for dirt and grime after 10
hours of operation and if necessary clean it with
a copper wire brush. Thereafter service the spark
plug after every 50 hours of operation.
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plug wrench.