Owner`s manual

6-8
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EAU17226
PERIODIC MAINTENANCE AND MINOR REPAIR
3. Remove the spark plug as shown,
with the spark plug wrench in-
cluded in the owner’s tool kit.
ZAUM00**
1
1. Spark plug wrench
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).
NOTE:
If the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to di-
agnose such problems yourself. In-
stead, have a Yamaha dealer check the
vehicle.
2. Check the spark plug for electrode
erosion and excessive carbon or
other deposits, and replace it if
necessary.
Specified spark plug:
BPR7HS (NGK)
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifi-
cation.
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1. Spark plug gap
Spark plug gap:
0.6 ~ 0.7 mm (0.024 ~ 0.028 in)
2. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
3. Install the spark plug with the spark
plug wrench, and then tighten it to
the specified torque.
Tightening torque:
Spark plug:
20 Nm (2.0 m • kgf, 14.4 ft • lbf)
NOTE:
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4 ~ 1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
4. Install the spark plug cap.
5. Install the panel.
5PJ-F8199-14_ch6.pmd 2007/04/20, 10:528