MAINTENANCE AND ADJUSTMENT 97
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A. Cooling Fan
B. Screen
Spark Plug
The standard spark pl
ug is shown in the table. The
spark plug should be taken out periodically in ac-
cordance with the Periodic Maintenance Chart for
cleaning, inspectio
n, and resetting of the plug gap.
Maintenance
If the plug is oily o r has carbon built up on it,
cleanit. Theplugmayalsobecleanedusinga
high flash-point solvent and a nonmetal brush (ny-
lon etc.). Measure the gap with a wire-type thickness
gauge, and adjust the gap if incorrect by bending the
outer electrode. If the insulator is cracked, replace
the plug. Use the standard plug.
A. Gap