Checking The Shift Drum Assembly; Checking The Transmission - Yamaha YZF-R1S Service Manual

TRANSMISSION
2. Check:
S shift fork guide bar
Roll the shift fork guide bar on a flat surface.
Bends ! Replace.
WARNING
Do not attempt to straighten a bent shift fork
guide bar.
3. Check:
S shift fork movement
(along the shift fork guide bar)
Rough movement ! Replace the shift forks
and shift fork guide bar as a set.
EAS00422

CHECKING THE SHIFT DRUM ASSEMBLY

1. Check:
S shift drum grooves 1
Damage/scratches/wear ! Replace the
shift drum assembly.
S shift drum segment 2
Damage/wear ! Replace the shift drum as-
sembly.
S shift drum bearing 3
Damage/pitting ! Replace the shift drum
assembly.
EAS00425

CHECKING THE TRANSMISSION

1. Measure:
S main axle runout
(with a centering device and dial gauge 1 )
Out of specification ! Replace the main
axle.
Main axle runout limit
0.08 mm (0.0032 in)
5-104
ENG