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Yamaha BIG BEAR 400 - ENGINE CARE PROCEDURES

Yamaha BIG BEAR 400
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8-9
8
WARNING
EWB00010
Indicates a potential hazard that could result in
serious injury or death.
EBU23211
Checking the spark plug
The spark plug is an important engine component,
which is easy to check. Since heat and deposits
will cause any spark plug to slowly erode, the spark
plug should be removed and checked in accor-
dance with the periodic maintenance and lubrica-
tion chart. In addition, the condition of the spark
plug can reveal the condition of the engine.
To remove the spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown, with the
spark plug wrench included in the owners tool
kit.
1. Spark plug cap
U4S110E0.book Page 9 Friday, August 4, 2006 4:03 PM

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