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Maintenance and care
IMPORTANT! Danger from water. Penetrat-
ing water (ignition system, carburettor...) can lead
to malfunctions.
■
Do not spray the engine with water.
1. Allow the engine to cool before cleaning.
2. Remove the contamination regularly from the
engine with a cleaning cloth or brush.
3. Blow-off all waste and dirt residues from the
silencer and its cover using compressed air.
4. Clean the cooling system:
■
Remove obstructions from cooling air
openings (07/1).
■
In order to prevent overheating, also
clean the internal cooling vanes and sur-
faces.
5. Wipe plastic parts with a damp sponge (07/2)
and detergent.
7.4
Clean the air filter (08)
1. Clean the area around the filter cover.
2. Unscrew the two knobs (08/2) on the filter
cover (08/1).
3. Remove filter cover.
4. Remove filter element (08/3).
5. Disconnect the foam pre-filter (08/4) from the
cartridge (08/5).
6. Close intake port (08/6) of the engine with a
cloth to prevent dirt getting into the engine.
7. Tap out the cartridge (08/5) on a solid sur-
face and blow out from the inside to the out-
side with compressed air to remove dust and
dirt. Important: Water, gasoline, detergents
and similar must not be used to clean the
cartridge.
8. Wash foam pre-filter (08/4) with water and
detergent and allow to dry in fresh air. Im-
portant: The foam pre-filter must NOT be
soaked in oil.
9. Clean the inside of the filter cover (08/1).
10. Remove the cloth from the intake port.
11. Pull the foam pre-filter over the cartridge.
Activity
Checking the engine oil level
493127_d
After the
Every 5
first 5 op-
operating
erating
hours or
hours
daily pri-
or to use
X
12. Insert the filter element and refit the filter cov-
er.
7.5
Maintaining the spark plug (09)
Prescribed spark plug type: see chapter 11 "Re-
placement parts", page 26.
WARNING! Risk of injury from electric
shock. Checking the ignition spark with the spark
plug removed may result in serious injury from
electric shock and fire.
■
Never check the ignition spark function with
the spark plug removed. Use an ignition
spark tester instead.
IMPORTANT! Danger of engine damage.
Operating the engine with the incorrect spark
plug or without a spark plug will result in serious
engine damage!
■
Always use the specified spark plug type.
■
Never try to start the engine without a spark
plug.
1. Remove the spark plug (09/1) with a socket
wrench (09/2).
2. Clean the electrodes with a metal brush
(09/3) and remove any carbon black depos-
its.
3. Check the correct electrode distance (09/5)
with a feeler gauge (09/4).
Note: The electrode clearance of the spark
plug should be 0.7 mm – 0.8 mm.
4. Reinsert the spark plug and tighten with a
socket wrench.
7.6
Carburettor settings
NOTE The carburettor must only be adjust-
ed by an authorised service workshop.
7.7
Maintenance schedule
Comply with the intervals measured in hours or
years, whichever occurs first.
NOTE It may be necessary to shorten the
maintenance intervals compared to those stated
in the table above in case of severe loading and
at high temperatures.
Every 25
Every 50
operating
operating
hours
hours or
annually
Every
Every
year
100 oper-
ating
hours
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