8-27
1. Spark plug cap
1. Capuchon de bougie
1. Tapa de bujía
1. Spark plug wrench
1. Clé à bougie
1. Llave de bujía
EBU14550
Spark plug inspection
Removal
1. Remove the spark plug cap.
2. Use the spark plug wrench in the owner’s tool
kit to remove the spark plug as shown.
Inspection
The spark plug is an important engine component
and is easy to inspect. The condition of the spark
plug can indicate the condition of the engine.
The ideal color on the white insulator around the
center electrode is a medium-to-light tan color for
an ATV that is being ridden normally.
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:
DR8EA (NGK)
U5YT60.book Page 27 Friday, December 12, 2003 1:55 PM
Summary of Contents for Raptor YFM350S
Page 2: ...B6 fm Page 1 Monday June 18 2001 11 18 AM ...
Page 3: ...U5YT60 book Page 1 Friday December 12 2003 1 55 PM ...
Page 17: ...U5YT60 book Page 4 Friday December 12 2003 1 55 PM ...
Page 21: ...U5YT60 book Page 4 Friday December 12 2003 1 55 PM ...
Page 25: ...U5YT60 book Page 4 Friday December 12 2003 1 55 PM ...
Page 31: ...1 6 U5YT60 book Page 6 Friday December 12 2003 1 55 PM ...
Page 37: ...1 12 U5YT60 book Page 12 Friday December 12 2003 1 55 PM ...
Page 43: ...1 18 U5YT60 book Page 18 Friday December 12 2003 1 55 PM ...
Page 172: ...7 1 3 Riding Your ATV U5YT60 book Page 1 Friday December 12 2003 1 55 PM ...
Page 173: ...7 2 7 Conduite du VTT Conducción del ATV U5YT60 book Page 2 Friday December 12 2003 1 55 PM ...
Page 263: ...8 14 U5YT60 book Page 14 Friday December 12 2003 1 55 PM ...
Page 324: ...8 75 U5YT60 book Page 75 Friday December 12 2003 1 55 PM ...
Page 325: ...8 76 U5YT60 book Page 76 Friday December 12 2003 1 55 PM ...
Page 331: ...8 82 U5YT60 book Page 82 Friday December 12 2003 1 55 PM ...
Page 359: ...U5YT60 book Page 110 Friday December 12 2003 1 55 PM ...
Page 375: ...10 6 U5YT60 book Page 6 Friday December 12 2003 1 55 PM ...
Page 381: ...10 12 U5YT60 book Page 12 Friday December 12 2003 1 55 PM ...
Page 387: ...U5YT60 book Page 18 Friday December 12 2003 1 55 PM ...
Page 390: ...B6 fm Page 1 Monday June 18 2001 11 18 AM ...