Checking The Spark Plugs - Yamaha F50F Service Manual

8. Install a new timing belt 3 onto the drive
sprocket, then onto the driven sprocket
with its part number in the upright posi-
tion.
CAUTION:
• Do not damage the timing belt during
installation.
• Do not twist, turn inside out, or bend the
timing belt beyond the maximum limit of
25 mm (1.0 in), otherwise it can be dam-
aged.
• Do not get oil or grease on the timing
belt.
9. Turn the drive sprocket clockwise two
turns, and then check that the alignment
marks are aligned.
6C13G11
10. Install the solenoid valve and stator coil
assembly, and connect the stator coil
coupler and pulser coil coupler.
11. Install the Woodruff key, then the fly-
wheel magnet.
CAUTION:
Apply force in the direction of the arrows
shown to prevent the flywheel holder from
slipping off easily.
NOTE:
Apply engine oil to the flywheel magnet nut
before installation.
Flywheel holder: 90890-06522
Flywheel magnet nut:
157 N·m (15.7 kgf·m, 115.8 ft·lb)
12. Adjust the pulser coil air gap.
NOTE:
For adjustment procedures, see Chapter 8,
"Checking the pulser coil air gap."
13. Install the flywheel magnet cover.

Checking the spark plugs

1. Disconnect the spark plug wires, and
then remove the spark plugs.
Power unit
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