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8-73
Do not attempt to diagnose such problems your-
self.
Instead, take the ATV to a Yamaha dealer. You
should periodically remove and inspect the spark
plug because heat and deposits will cause the
spark plug to slowly break down and erode. If elec-
trode erosion becomes excessive, or if carbon and
other deposits are excessive, you should replace
the spark plug with the specified plug.
Specified spark plug:
DPR8EA-9 (NGK)
EE.book Page 73 Tuesday, April 1, 2003 12:23 PM
Summary of Contents for ULTRAMATIC GRIZZLY 660 YFM660FS
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Page 190: ...7 1 Riding Your ATV EE book Page 1 Tuesday April 1 2003 12 23 PM ...
Page 191: ...7 2 7 Conduite du VTT Conducción del ATV EE book Page 2 Tuesday April 1 2003 12 23 PM ...
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