Section 3 Maintenance
3.3 Spark plug
Recommended types: F7RTC
NOTICE
Spark plugs of the wrong size or incorrect heat range
can cause engine damage.
1. Disconnect the spark plug cap and remove
any dirt from around the spark plug area.
2. Remove the spark plug with a spark plug
wrench.
3. Inspect the spark plug for excessively worn electrodes, chips or cracks in the insulator,
or excessive deposits. Replace the spark plug if you have any doubts about its
condition.
4. Measure the electrode gap with a wire gap gauge. Adjust the gap to 0.7-0.8mm by
carefully bending the ground electrode.
5. use a spark plug wrench to tighten the plug enough to compress the washer. For a used
plug, tighten 1/8 to 1/4 of a turn after the spark plug seats. For a new plug, tighten 1/2
turn after the spark plug seats.
NOTICE
A loose spark plug can become hot enough to damage the engine. Over tightening a
spark plug can damage the threads in the engine.
6. in stall the spark plug cap on the plug.
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