Yamaha YZ250X 2022 Owner's Service Manual page 207

pay careful attention to the crankcase oil seal
lip.
• Install the spacer with its chamfered side "a"
facing the crankcase.
5. Install:
• Shift fork 1 (L) "1"
• Shift fork 2 (C10) "2"
• Shift fork 3 (R) "3"
• Shift cam "4"
(to the main axle and drive axle)
TIP
• Apply the molybdenum disulfide oil on the shift
fork grooves.
• Mesh the shift fork 1 (L) with the 4th wheel gear
"5" and the shift fork 3 (R) with the 5th wheel
gear "6" on the drive axle.
• Mesh the shift fork 2 (C10) with the 3rd pinion
gear "7" on the main axle.
7
G
2
G
6. Install:
• Transmission assembly "1"
(to the crankcase (left) "2")
a
1
1
6
5
G
3
1
G
4 4
G
5-45
TRANSMISSION
TIP
Apply the transmission oil on the bearings and
guide bars.
7. Check:
• Shifter operation
• Transmission operation
Unsmooth operation  Repair.