Scheppach MS173-51 Original Bedienungsanleitung Seite 37

Resharpening the blade
The blades can be resharpened with a met-
al file. In order to avoid imbalance, the blade
should be resharpened by an authorized
service workshop
Checking the oil level
m CAUTION! Never run the engine with no
or too little oil. This could cause severe dam-
age to the engine. Use only SAE30 engine
oil.
Checking the oil level (Fig. 18):
• Stand the lawn mower on a flat level sur-
face.
• Unscrew the oil dip stick (12) by turning an-
ticlockwise, 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 (12) again and
read off the oil level while holding hori-
zontally. The oil level must be be-
tween the maximum and the minimum
Changing the oil Fig. 23
• Change the engine oil every year before
the start of the season when the engine
is warm.
• Use only engine oil (SAE30).
• Empty the fuel tank (with a petrol suction
pump)
• Place a flat oil drip tray in front of the mow-
er (min. volume 1 Litre).
• Remove the dipstick and tip over the mow-
er until the whole oil is run out into the oil
drip tray.
• Fill up with engine oil as far as the top mark
on the dipstick (approx. 0.47 l).
• 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.
Cleaning the belts (Fig. 17, 19)
• Remove the knife and the gear housing by
loosening the screws out.
• Clean the elements of the transmission
and the belt once or twice a year with
brush or compressed air.
• Screw the transmission housing and the
knife on again.
Care and adjustment of the cables
Oil the cables at regular intervals and check
that they move easily.
Maintenance of the air filter (Fig. 20)
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.
Unclip the air filter cover and remove the
sponge filter element. To avoid objects fall-
ing into the air intake, replace the air filter
cover. (Fig. 20).
Important: Never clean the air filter with pet-
rol or inflammable cleaning agents. Clean
the air filter with compressed air or simply
by knocking out any soiling.
Maintenance of the spark plug (Fig. 21)
Check the spark plug for dirt and grime af-
ter 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.
Pull off the spark plug boot with a twist. Re-
move the spark plug (10) with a spark plug
wrench.
Using a feeler gauge, set the gap to 0.75
mm( 0.030"). Refit the spark plug taking
care not to overtighten.
Engine brake lever (Fig. 1)
The engine is equipped with a mechanical
brake (3) which has to be checked regularly.
When releasing the brake lever, the blade
must come to a halt within 7 seconds. If this
is not the case, the machine must not be
used. Contact an authorised specialist re-
tailer.
Ensure that the machine is in a flawless
condition for its entire service life. Improp-
er maintenance may lead to life-threatening
injuries.
Repairs
After any repair or maintenance work, check
that all safety-related parts are in place and
in proper working order. All parts which may
cause injury must be kept where they are
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