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4
Take off the Spark Plug with the Spark Plug Spanner.
Visual inspection the Spark Plug. Change a new one if its insulator cracked or chipped.
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Clean it with a wire brush if the Spark Plug is reused.
Measure the Spark Plug Gap with a feeler gauge. The normal value:0.6-0.7mm
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（0.024-0.028in）. Adjust the gap by bend one of the electrode carefully.
Reinstall the Spark Plug carefully, by hand, to avoid cross-threading. A new Spark plug
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should be tightened 1/2 turn with a spanner. A used Spark plug should be tightened 1/8 to
1/4 turn with spanner.
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