Table of Contents
Advertisement
2
3
1. Storage compartment mat
2. Spark plug cover
3. Screw
3. Remove the spark plug cap.
1
1. Spark plug cap
4. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner's tool kit.
PERIODIC MAINTENANCE AND ADJUSTMENT
1
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).
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.
2. Check the spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
6-11
it if necessary.
Specified spark plug:
NGK/CR7E
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
1
1. Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 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.
2
3
4
5
6
7
8
9
Advertisement
Table of Contents
Troubleshooting
