8-9
8
EBU23213
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 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).
1. Spark plug cap
1. Spark plug wrench
U1BS63E0.book Page 9 Tuesday, March 13, 2012 11:43 AM
Summary of Contents for YFM350R
Page 12: ...1 2 1 43P 2816R 01 1PD 2811R 00 1 2 U1BS63E0 book Page 2 Tuesday March 13 2012 11 43 AM ...
Page 17: ...1 7 1 For Oceania 1 2 4 3 5 U1BS63E0 book Page 7 Tuesday March 13 2012 11 43 AM ...
Page 59: ...7 1 7 EBU21141 RIDING YOUR ATV U1BS63E0 book Page 1 Tuesday March 13 2012 11 43 AM ...
Page 137: ...11 2 11 1 Model label U1BS63E0 book Page 2 Tuesday March 13 2012 11 43 AM ...