Yamaha YZ450F(T) Owner's Service Manual page 436

TRANSMISSION, SHIFT CAM AND SHIFT FORK
5. Install:
• Shift fork 1 (L) 1
• Shift fork 2 (R) 2
• Shift cam 3
To main axle and drive axle.
NOTE:
• Apply the molybdenum disulfide oil on the
shift fork grooves.
• Mesh the shift fork #1 (L) with the 3rd pinion
gear 4 on the main axle.
• Mesh the shift fork #2 (R) with the 4th wheel
gear 5 on the drive axle.
6. Install:
• Transmission assembly 1
To crankcase (left) 2.
NOTE:
Apply the engine oil on the bearings and guide
bars.
7. Check:
• Shifter operation
• Transmission operation
Unsmooth operation → Repair.
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ENG