Checking The Shift Forks; Checking The Shift Cam; Checking The Transmission - Yamaha YFM4FAR Service Manual

TRANSMISSION

CHECKING THE SHIFT FORKS

1.Check:
Shift fork cam follower 1
G
Shift fork pawls 2
G
Scoring/bends/wear/damage → Replace.
2.Check:
Guide bar
G
Roll the guide bar on a flat surface.
Bends → Replace.
WARNING
Do not attempt to straighten a bent guide
bar.
3.Check:
Shift fork movement
G
(on the guide bar)
Unsmooth operation → Replace the shift fork
and the guide bar.

CHECKING THE SHIFT CAM

1.Check:
Shift cam groove
G
Scratches/wear/damage → Replace.

CHECKING THE TRANSMISSION

1.Measure:
Axle runout
G
Use a centering device and a dial gauge.
Out of specification → Replace the bent axle.
Runout limit (drive axle):
0.06 mm (0.0024 in)
4 - 72
ENG