Maintenance
T01032GB.fm 36
3. Measure the plug gap with a feeler gauge. The gap should be
0,7 mm. Correct as necessary by bending the side electrode.
4. Check that the spark plug washer is in good condition, and thread
the spark plug in by hand to prevent cross-threading.
5. After the spark plug is seated, tighten with a spark plug wrench to
compress the washer.
Take notice: If installing a new spark plug, tighten 1/2 turn after the
spark plug seats to compress the washer. If reinstalling a used spark
plug, tighten 1/8-1/4 turn after the spark plug seats to compress the
washer.
Caution: The spark plug must be securely tightened. An improperly
tightened spark plug can become very hot and may damage the
engine.
5.7 Vergaser
Carburettor adjustment
Start the engine and allow it to warm up to normal operting
temperature.
With the engine idling, turn the pilot screw in or out to the setting that
produces the highest idle rpm. The correct setting will usually be
approximately 2 1/4 turns from the fully closed position.
Caution: Do not tighten the pilot screw against its seat as this will
damage the pilot screw or seat. After the pilot screw is correctly
adjusted, turn the throttle stop screw to obtain the standard idle speed.
Standard idle speed: 1 400 + 150 rpm.
5.8 Service instructions
1 Pilot screw
2 Throttle stop screw
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