SPARK PLUG SERVICE
Recommended spark plugs: E5T or other equivalents.
An incorrect spark plug 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. Replace it if the electrodes are worn, or if the insulator is cracked
or chipped.
4. Measure the spark plug electrode gap with a suitable gauge.
The gap should be 0.028 -0.031 in (0.70 - 0.80 mm). Correct the gap, if necessary, by
carefully bending the side electrode.
5. Install the spark plug carefully, by hand, to avoid cross-threading.
6. After the spark plug seats, tighten with a spark plug wrench to compress the water.
If reinstalling the used spark plug
，
tighten 1/8 - 1/4 turn after the spark plug seats.
If installing a new spark plug, tighten 1/2 turn after the spark plug seats.
A loose spark plug can overheat and damage the engine.
Over tightening the spark plug can damage the threads in the cylinder head.
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