Removing The Ac Magneto; Checking The Ac Magneto; Checking The Woodruff Key; Installing The Ac Magneto - Yamaha YZ450F Owner's Service Manual

REMOVING THE AC MAGNETO

EAS1SL5274
1. Remove:
• Nut (rotor) "1"
• Washers
1
2. Remove:
• Rotor "1"
Use the rotor puller "2" to remove the rotor.
• Woodruff key
Rotor puller
90890-04151
YM-04151

CHECKING THE AC MAGNETO

EAS1SL5275
1. Check:
• Rotor inner surface "a"
• Stator outer surface "b"
Damage  Inspect the crankshaft runout
and crankshaft bearing.
a
EAS1SL5276
b
5-60

CHECKING THE WOODRUFF KEY

1. Check:
• Woodruff key "1"
Damage  Replace.

INSTALLING THE AC MAGNETO

EAS1SL5277
1. Install:
• Stator "1"
• Screw (stator) "2"
Screw (stator)
8 Nm (0.8 m·kgf, 5.8ft·lbf)
LOCTITE®
• Crankshaft position sensor "3"
• Bolt (crankshaft position sensor) "4"
• Holder "5"
• Bolt (holder) "6"
Bolt (crankshaft position sensor)
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
LOCTITE®
Holder
8 Nm (0.8 m·kgf, 5.8 ft·lbf)
LOCTITE®
TIP
• Apply the sealant to the grommet of the AC
magneto lead.
• Tighten the stator screws using the T25 bit.
• Pass the AC magneto lead "a" through the
crankcase cover side.
Three Bond No.1215®
90890-85505
LT
2
1
AC MAGNETO
6
5
LT
a
4
3
4