External Shift Mechanism Inspection
Examine the shift shaft [A] for any damage.
If the shaft is bent, straighten or replace it.
If the serration are damaged, replace the shaft.
If the springs [B] [C] are damaged in any way, replace
If the shift mechanism arm [D] is damaged in any way,
replace the arm.
Check the return spring pin [A] is not loose.
If it is loose, unscrew it, apply a non-permanent locking
agent to the threads, and tighten it.
Torque - Shift Shaft Return Spring Pin: 28 N·m (2.9 kgf·m,
Check the gear positioning lever [B] and it's spring for
breaks or distortion.
If the lever or spring are damaged in any way, replace
Visually inspect the shift drum cam [C].
If they are badly worn or if they show any damage, replace
Transmission Shaft Removal
Split the crankcase (see Crankcase Splitting).
Remove the drive shaft [A] and output shaft [B].
Transmission Shaft Installation
Check to see that the set pins [A] and set rings [B] are in
CRANKSHAFT / TRANSMISSION 9-23