Removing The Transmission; Checking The Shift Forks - Yamaha 2004 YXR660 Service Manual

TRANSMISSION

REMOVING THE TRANSMISSION

1. Remove:
• shift drum 1
• shift fork assembly 2
M MMM M MMM M M MMM M
a. Pull out the guide bar from the right crank-
case.
b. Slide the shift fork assembly and remove
the shift fork followers from the shift drum
grooves.
c. Remove the shift drum.
d. Remove the shift fork assembly.
L LLL L LLL L L LLL L
2. Remove:
• secondary shaft 1
• drive axle assembly 2
• chain 3
NOTE:
Remove the secondary shaft, drive axle
assembly, and chain as a set.

CHECKING THE SHIFT FORKS

1. Check:
• shift fork follower 1
• shift fork pawl 2
Scoring/bends/wear/damage → Replace.
2. Check:
• guide bar
Roll the guide bar on a flat surface.
Bends → Replace.
WARNING
Do not attempt to straighten a bent guide
bar.
4 - 81
ENG
M MMM M M MMM M M MMM M MMM
L LLL L L LLL L L LLL L LLL