Mainshaft Bearing Preload

If any of the following parts are replaced, adjust mainshaft bearing preload.
- Mainshaft
- Mainshaft bearings
- Clutch housing
- Transmission case




1. Remove case cover, O-ring, mainshaft bearing adjusting shim, spacer and mainshaft rear bearing outer race from transmission case.
2. Install mainshaft assembly on clutch housing.
3. Install transmission case on clutch housing.
- Tighten transmission case fixing bolts to the specified torque. [1][2]Mechanical Specifications




4. Install mainshaft rear bearing outer race on inner race.




5. Measure distance from transmission case to bearing outer race.
- Make sure that bearing is properly seated.
6. Select shim. [1][2]Mechanical Specifications
7. Check total turning torque after assembling. Refer to "ASSEMBLY." Assembly