Scheppach RM420 - Maintenance and Cleaning

 www.scheppach.com
GB
|
31
• Only original parts or parts approved by the
manufacturer may be used for repairs (see address
on the warranty certicate).
• If the lawn mower is not going to be used for an
extended period, empty the petrol tank using a
petrol suction pump.
• Oil and maintain the machine.
9. Maintenance and cleaning
• Regular, careful maintenance is required to guaran-
tee the safety level and performance of the machine.
• Make sure that all nuts, bolts and screws are tight-
ened securely and that the machine is in safe work-
ing condition.
• Routinely check the grass basket for signs of wear
and impaired functionality.
Regularly clean the grass box with water and let it
dry thoroughly.
• For your own safety, replace worn or damaged
parts without delay.
• If the fuel tank should require emptying this should
only be done in the open air using a petrol suction
pump (available from DIY shops).
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.
Cleaning
The mower should be thoroughly cleaned after
each use. In particular, the underside and the blade
retainer.
m Attention!
For safety reasons, disconnect the spark plug cable
before cleaning.
It is best to tilt the mower backwards. The spark
plug should point upwards to prevent engine oil from
entering the intake tract or leaking out.
Alternatively, you can tilt the device on its side, but
you must make sure that the air lter is on the upper
side.
Note: Before tilting the lawnmower, empty the fuel
tank fully with a fuel scavenge pump.
Do not tilt the lawnmower beyond 90 degrees.
It is easiest to remove the dirt and grass immediately
after mowing.
Grass residues and dirt that have dried on can impair
mowing. Check that the grass ejection channel is
clear of grass residues and remove these if neces-
sary.
Never clean the mower with a water jet or high pres-
sure cleaner. The motor should remain dry.
Do not use aggressive cleaning products such as
cold cleaners or white spirit.
Fig. 24 (w)
• Remove the gras box.
• Fit the hose connection to the mower and turn the
tap on. (Fig. 24)
• Start the mower and switch o󰀨 again after about 30
seconds. The rotating blade bar throws the water
onto the bottom of the mower and thus cleans it.
• Turn o󰀨 the tap and remove the hose connection .
• Clean the top with a cloth (do not use any sharp
objects).
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 tted.
• 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 engine
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 le. In
order to avoid imbalance, the blade should be re-
sharpened by an authorized service workshop