Bearing Inspection (Transmission); Shift Fork, Shift Cam And Segment Inspection - Yamaha WR450F(W) Owner's Service Manual

TRANSMISSION, SHIFT CAM AND SHIFT FORK
EC4H4600
Bearing
1. Inspect:
• Bearing 1
Rotate inner race with a finger.
Rough spot/seizure → Replace.
EC4H4801
Shift fork, shift cam and segment
1. Inspect:
• Shift fork 1
Wear/damage/scratches → Replace.
2. Inspect:
• Shift cam 1
• Segment 2
Bend/wear/damage → Replace.
3. Check:
• Shift fork movement
Unsmooth operation → Replace shift
fork.
NOTE:
For a malfunctioning shift fork, replace not only
the shift fork itself but the two gears each adja-
cent to the shift fork.
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