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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 counterclockwise.
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 magne-
to 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"
Screw (stator):
10 Nm (1.0 m•kg,
7.2ft•lb)
• Apply the sealant on the grommet
of the CDI magneto lead.
• Tighten the screws using the T30
bit.
YAMAHA Bond No. 1215
®
(ThreeBond
No. 1215):
90890-85505
2. Install:
• Woodruff key "1"
• Rotor "2"
• Clean the tapered portions of the
crankshaft and rotor.
• When installing the woodruff key,
make sure that its flat surface "a" is
in parallel with the crankshaft center
line "b".
• When installing the rotor, align the
keyway "c" of the rotor with the
woodruff key.
3. Install:
• Washer "1"
• Nut (rotor) "2"
Nut (rotor):
56 Nm (5.6 m•kg, 40
ft•lb)
Use the rotor holding tool "3".
Rotor holding tool:
YU-1235/90890-01235
4-48
CDI MAGNETO
4. Connect:
• CDI magneto lead
Refer to "CABLE ROUTING DIA-
GRAM" section in the CHAPTER
2.
5. Install:
• Dowel pin
• Gasket (left crankcase cover)
• Left crankcase cover "1"
• Hose guide (cylinder head breath-
er hose) "2"
• Bolt (left crankcase cover)
Bolt (left crankcase cov-
er):
10 Nm (1.0 m•kg, 7.2
ft•lb)
Tighten the bolts in stage, using a
crisscross pattern.
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