Elem Garden Technic TTAC51T-CC173 Traduction Des Instructions D'origine page 98

Spark Plug Service
For good performance, the spark plug must be properly gapped and free of deposits.
Disconnect the spark plug cap and remove any dirt from around the spark plug area.
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Remove the spark plug with a spark plug wrench.
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Inspect the spark plug. Replace it if the electrodes are worn, or if the insulator is

cracked or chipped.
Measure the spark plug electrode gap with a suitable gauge. The gap should be

0.028 ~ 0.031 in (0.7 ~ 0.8mm). Correct the gap, if
necessary, by carefully bending the side electrode with a
suitable tool.
Install the spark plug carefully, by hand, to avoid
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cross-threading.
Install the spark plug cap on the spark plug.
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