Removing The Rotor; Checking The Cdi Magneto; Checking The Woodruff Key; Installing The Cdi Magneto - Yamaha YZ125 2009 Owner's Service Manual

REMOVING THE ROTOR

1. Remove:
• Nut (rotor) "1"
• Washer "2"
Use the rotor holding tool "3".
Rotor holding tool:
YU-1235/90890-01235
2. Remove:
• Rotor "1"
Use the flywheel puller "2".
Flywheel puller:
YM-1189/90890-01189
When installing the flywheel puller, turn it coun-
terclockwise.

CHECKING THE CDI MAGNETO

1. Inspect:
• Rotor inner surface "a"
• Stator outer surface "b"
Damage→Inspect the crankshaft runout and
crankshaft bearing.
If necessary, replace CDI magneto and/or
stator.

CHECKING THE WOODRUFF KEY

1. Inspect:
• Woodruff key "1"
Damage → Replace.

INSTALLING THE CDI MAGNETO

1. Install:
• Stator "1"
• Screw (stator) "2"
Temporarily tighten the screw (stator) at this
point.
4-49
CDI MAGNETO