Periodic Maintenance; Spark Plug - Yamaha MX360 Service Manual

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PERIODIC MAINTENANCE

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PERIODIC MAINTENANCE

SPARK PLUG

WARNING
Check and adjust the areas around the cyl-
inder head after the engine has cooled
down completely.
1. Remove:
9 Spark plug cap
9 Spark plug
NOTICE
Before removing the spark plug, use com-
pressed air to clean the cylinder head
cover to prevent dirt from falling into the
engine.
2. Check:
9 Spark plug type
Not correct → Replace.
Spark plug type:
Refer to "SPECIFICATIONS" in
the Supplementary service
manual.
9 Electrode 1
Wear/damage → Replace.
9 Insulator color 2
Not normal → Replace.
3. Measure:
9 Spark plug gap a
Use a wire gauge or thickness gauge.
Out of specification → Regap.
If necessary, clean the spark plug with
a spark plug cleaner.
CHK
ADJ