Removing The Transmission; Checking Shift Drum And Shift Forks - Yamaha YBR250 2007 Service Manual

1
3
4
2
5
3
1

REMOVING THE TRANSMISSION

1. Remove:
2
NOTE:
Move the gears to ease the forks removal.

CHECKING SHIFT DRUM AND SHIFT FORKS

1
1. Check:
4
6
2. Check:
1
2
3. Check:
3
2
5-80
TRANSMISSION
• shift fork shaft 1
• shift drum assembly 2
• shift fork 3 (R) 3
• shift fork 2 (C)
• shift fork 1 (L) 4
• shift fork 3 (R) 1
• shift fork 2 (C) 2
• shift fork 1 (L) 3
• shift fork shaft 4
• shift drum assembly 5
• shift fork cam follower 6
Rough movement --> Replace the shift forks.
• shift fork cam follower 1
• shift fork pawl 2
Damage/Wear --> Replace.
• shift drum assembly
• shift drum groove 1
Damage/Scratches/Wear --> Replace.
• shift drum segment 2
Damage/Scratches/Wear --> Replace.
• shift drum bearing 3
Damage/Pitting --> Replace.
ENG