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CDI MAGNETO
REMOVING THE ROTOR
1. Remove:
•Nut (rotor) "1"
•Washer
2. Remove:
•Rotor "1"
Use the rotor puller 2.
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"
•Apply the sealant on the grommet
of the CDI magneto lead.
•Tighten the screws using the T30
bit.
2. Install:
•Woodruff key "1"
•Rotor "2"
•Degrease the contact surfaces of
the tapered portions of the crank-
shaft 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
•Nut (rotor) "1"
4. Connect:
•CDI magneto lead
Refer to "CABLE ROUTING DIA-
GRAM" section in the CHAPTER
2.
5. Install:
•Dowel pin
•O-ring
•Gasket (left crankcase cover)
•Left crankcase cover "1"
•Hose guide (cylinder head breath-
er hose) "2"
•Bolt (left crankcase cover)
•Apply the lithium soap base gr ease
on the O-ring.
•Tighten the bolts in stage, using a
crisscross pattern.
Rotor puller:
YM-04151/90890-04151
Screw (stator):
10 Nm (1.0 m•kg,
7.2ft•lb)
YAMAHA Bond No. 1215
(ThreeBond
®
No. 1215):
90890-85505
Nut (rotor):
56 Nm (5.6 m•kg, 40
ft•lb)
Bolt (left crankcase cov-
er):
10 Nm (1.0 m•kg, 7.2
ft•lb)
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