
8-15
8
3. Remove the spark plug as shown, with the
spark plug wrench included in the owner’s tool
kit.
To check the spark plug
1. Check that the porcelain insulator around the
center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
TIP
If the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV.
1. Spark plug cap
1. Spark plug wrench
U2LC60E0.book Page 15 Friday, March 8, 2013 1:18 PM
Summary of Contents for GRIZZLY 450 2013
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Page 21: ...1 10 1 16 UNDER 1P0 F816L 00 7 6 U2LC60E0 book Page 10 Friday March 8 2013 1 18 PM...
Page 70: ...7 1 7 EBU21141 RIDING YOUR ATV U2LC60E0 book Page 1 Friday March 8 2013 1 18 PM...
Page 169: ...11 2 11 1 Model label U2LC60E0 book Page 2 Friday March 8 2013 1 18 PM...
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