Yamaha XS650SE, Shop Manual

Page: 83 / 215

6. Retighten screws. Check timing again
for right cylinder.
7. Repeat procedure (steps 2-6) for left
cylinder.
1. Right cylinder timing adjustment
2. Left cylinder timing adjustment
(Page
F. Spark plug
Check electrode condition and wear, insula-
tor color and electrode gap. Use a wire gauge
for adjusting the plug gap. If the electrodes
become too worn, replace it. When installing
the plug, always clean the gasket surface, wipe
off any grime that might be present on the
surface of the spark plug, and torque the
spark plug properly.
Standard spark plug:
N-7Y (CHAMPION) or
Spark plug gap:
0.7 0.8 mm (0.028 0.031 in)
Spark plug tightening torque:
2.0 m-kg (14.5 ft-lb)