Scheppach MS173-51 Traduction Des Instructions D'origine page 32

m WARNING
Never work on or touch conducting parts on the ig-
nition unit with the engine running. Always pull the
spark plug boot from the spark plug before starting
any work of care or maintenance. Never perform any
work on the machine while it is running. Any work not
described in these Operating Instructions must be
performed by an authorized service workshop only.
Wheel axles and wheel hubs
• These should be lightly greased once a season.
Blade
For safety reasons you should only ever have your
blade sharpened, balanced and mounted by an au-
thorized service workshop. For optimum results it is
recommended that the blade should be inspected
once a year.
Changing the blade (Fig. 17)
Only ever use original spare parts when having the
blade replaced.
Wear gloves when replacing the blade in order to pre-
vent injury.
Never have any other blade fitted.
• Empty the fuel tank before removing the blade
• To replace the blade, undo the screw.
• Reinstall as illustrated in Fig. 17. Tighten the screw
properly. Tightening torque 45 Nm. When replacing
the blade, the blade screw should also be replaced.
Damaged blades
Should the blade, in spite of all precautions, come
into contact with an obstruction, shut down the en-
gine immediately and pull the spark plug boot. Tip
the lawn mower onto its side and check the 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.
m CAUTION! 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 re-
sharpened by an authorized service workshop
Checking the oil level
m CAUTION! Never run the engine with no or too lit-
tle oil. This could cause severe damage to the engine.
Use only SAE30 engine oil.
Checking the oil level (Fig. 18):
• Stand the lawn mower on a flat level surface.
• Unscrew the oil dip stick (12) by turning anticlock-
wise, pull out and wipe. Insert the dip stick back in
the filling mount as far as the stop, but do not screw
back in.
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• Pull out the dip stick (12) again and read off the
oil level while holding horizontally. The oil level
must be between 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 mower (min.
volume 1 Litre).
• Remove the dipstick and tip over the mower 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 loosen-
ing 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 reg-
ularly.
Unclip the air filter cover and remove the sponge filter
element. To avoid objects falling into the air intake,
replace the air filter cover. (Fig. 20).
Important: Never clean the air filter with petrol or in-
flammable 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 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.
Pull off the spark plug boot with a twist. Remove 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