Yamaha 2011 YZ250, Owner'S Manual

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TRANSMISSION, SHIFT CAM AND SHIFT FORK
3. Install:
• Washer "1"
• Circlip "2"
• Be sure the circlip sharp-edged cor-
ner "a" is positioned opposite side
to the washer and gear "b".
• Be sure the circlip end "c" is posi-
tioned at axle spline groove "d".
4. Install:
• Collar "1"
• Apply the lithium soap base grease
on the oil seal lip.
• When installing the collar into the
crankcase, 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 main axle and drive axle.
• Apply the molybdenum disulfide oil
on the shift fork grooves.
• Mesh the shift fork 1 (L) with the 4th
wheel gear "5" and 3 (R) with the
5th wheel gear "7" on the drive axle.
• Mesh the shift fork 2 (C10) with the
3rd pinion gear "6" on the main ax-
le.
6. Install:
• Transmission assembly "1"
To left crankcase "2".
Apply the transmission oil on the
bearings and guide bars.
7. Check:
• Shifter operation
• Transmission operation
Unsmooth operation
→
Repair.