2-7
2
ATV-0051
Adjust the gap to 0.6-0.7 mm (0.024-0.028 in.) for
proper ignition. Use a feeler gauge to check the gap.
ATV-0052A
When installing the spark plug, be sure to tighten it
to specifications. A new spark plug should be tight-
ened 1/2 turn once the washer contacts the cylinder
head. A used spark plug should be tightened 1/8 -
1/4 turn once the washer contacts the cylinder head.
Muffler/Spark Arrester
To clean the arrester, use the following procedure.
1. Remove the cap screw (1) securing the spark
arrester assembly (2) to the rear of the muffler.
Account for a gasket.
KM139A
2. Clean the screen (3) with a brush and
parts-cleaning solvent. Dry with compressed air.
If the screen has any holes or tears, it must be
replaced.
KM140B
3. Install the spark arrester in the muffler and
secure with the cap screw. Tighten securely.
KM139
! WARNING
Before removing the muffler/spark arrester, wait for
it to cool to avoid burns.
! WARNING
Before installing the spark arrester, wait for the muf-
fler to cool to avoid burns.
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