1. Attach the special tools to the mainshaft as follows:
   - Back-out the mainshaft holder bolt (A), and loosen the two hex bolts (B).
   - Fit the holder over the mainshaft so its lip is towards the transmission.
   - Align the mainshaft holder lip around the groove at the inside of the mainshaft splines, then tighten the hex bolts.

1. Fully seat the mainshaft by tapping on its end with a plastic hammer.

1. Thread in the mainshaft holder bolt until it just contacts the wide surface of the mainshaft base.