3-11
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MAINTENANCE
SPARK PLUG CHECK/ADJUSTMENT
Remove the spark plug (page 3-11).
Clean the spark plug [1] electrodes with a wire brush [2]
or special plug cleaner.
Check the following and replace if necessary.
– Insulator [3] and sealing washer [4] for damage
– Center electrode [5] and side electrode [6] for wear
– Burning condition, coloration
Measure the plug gap with a wire-type feeler gauge.
If the measurement is out of the specification, adjust by
bending the side electrode.
Install the spark plug (page 3-11).
SPARK PLUG REPLACEMENT
REMOVAL
Disconnect the spark plug cap [1] and remove the spark
plug [2].
• Clean around the spark plug base with compressed
air before removing the spark plug and be sure that
no debris is allowed to enter into the combustion
chamber.
INSTALLATION
Install and hand tighten the spark plug to the cylinder
head.
Tighten the spark plug to the specified torque.
Connect the spark plug cap.
RECOMMENDED SPARK PLUG:
BPR6ES (NGK)
W20EPR-U (DENSO)
PLUG GAP: 0.70 – 0.80 mm (0.028 – 0.031 in)
The engine and the muffler becomes very hot
during operation and remains hot for a while after
stopping the engine. Be careful not to touch the
muffler while it is hot. Allow it to cool before
proceeding.
RECOMMENDED SPARK PLUG:
BPR6ES (NGK)
W20EPR-U (DENSO)
TORQUE: 18 N·m (1.8 kgf·m, 13 lbf·ft)
62Z4H000.book 11 ページ ２０１１年５月２０日 金曜日 午前１０時５分
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