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PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6
To install the panel
1. Place the panel in the original posi-
tion, and then install the screws.
2. Install the rider seat.
EAU19632
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 accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Remove cowling A. (See page
6-7.)
2. Remove the spark plug cap.
3. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owners tool kit.
To check the spark plug
1. Check that the porcelain insulator
around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
TIP
If the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer check
the vehicle.
1. Screw
2. Panel A
1. Spark plug cap
1. Spark plug wrench
U5D7E1E0.book Page 9 Monday, July 13, 2009 11:55 AM
42


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