MAINTENANCE
25
CLEANING THE FUEL FILTER
1. Turn the fuel valve to OFF and unscrew the fuel filter and
O-ring.
Gasoline is highly flammable and explosive.
You may sustain burns or serious injuries when handling gasoline.
z Keep heat sources, sparks and fire away.
z Handle gasoline only outdoors.
z Immediately wipe off any spilled gasoline.
2. Wash the fuel filter and the O-ring with a non-flammable
solvent and dry them thoroughly.
3. Install the fuel filter with the O-ring. Tighten the fuel filter firmly.
4. Turn the fuel valve to ON and check for any leaks. Replace the
O-ring if it is leaking.
SPARK PLUG MAINTENANCE
Recommended spark plugs: F7RTC oder gleichwertig.
Wrong spark plugs may damage the engine.
1. Pull off the spark plug connector and clean the connector
area.
2. Unscrew the spark plug with a spark plug wrench.
3. Inspect the spark plug. Replace the spark plug if the
electrodes or the insulator are damaged.
4. Measure the electrode gap with an appropriate feeler gauge.
The gap must be 0.70 – 0.80 mm. Correct the gap, if
necessary, by carefully bending the outer electrode slightly.
5. Carefully screw in the spark plug by hand to prevent stripping
the thread.
6. Tighten the spark plug with the spark plug wrench after it is
seated.
If you are installing a used spark plug, tighten it by 1/8 – 1/4
turn.
If you are installing a new spark plug, tighten it by 1/2 – 1/4
turn.
A loose spark plug may overheat and damage the engine.
Tightening the spark plug too firmly may damage the thread in
the cylinder head.
7. Put the spark plug connector back in place.
O-RING
FUEL FILTER
SPARK PLUG
WRENCH
0.7 – 0.8 mm
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