PERIODIC MAINTENANCE 2-7
ELECTRODE’S CONDITION
Check the condition of the electrode.
If it is extremely worn or burnt, replace the spark plug.
Replace the spark plug if it has a broken insulator, damaged
threads, etc.
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SPARK PLUG INSTALLATION
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• Insert the spark plugs to the cylinder head by finger tight, and
then tighten them to the specified torque.
& Spark plug: 11 N·m (1.1 kgf-m)
EXHAUST PIPE BOLTS AND
MUFFLER BOLTS
• Tighten the exhaust pipe bolts and muffler bolts to the speci-
fied torque.
& Exhaust pipe bolt: 23 N·m (2.3 kgf-m)
& Muffler mounting bolt

1: 23 N·m (2.3 kgf-m)
Muffler connecting bolt

2: 23 N·m (2.3 kgf-m)
Check the thread size and reach when replacing the
spark plug. If the reach is too short, carbon will be
deposited on the screw portion of the spark plug hole
and engine damage may result.
To avoid damaging the cylinder head threads, first fin-
ger tighten the spark plug and then tighten it to the
proper torque using the spark plug wrench.
Tighten initially at 1 000 km (1 month) and every
12 000 km (24 months) thereafter.
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