Yamaha YZ450FT Automobile User Manual


 
4 - 96
ENG
TRANSMISSION, SHIFT CAM AND SHIFT FORK
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.
N
OTE:
For a malfunctioning shift fork, replace not only
the shift fork itself but the two gears each adja-
cent to the shift fork.
ASSEMBLY AND INSTALLATION
Transmission
1. Install:
Collar 1
4th pinion gear (20T) 2
3rd pinion gear (18T) 3
2nd pinion gear (16T) 4
To main axle 5.
N
OTE:
Apply the molybdenum disulfide oil on the
inner and end surface of the idler gear and on
the inner surface of the sliding gear, then
install.