1. Remove the mainshaft transmission housing bearing.

1. Assemble 41 x 68 mm thrust washer (A), 4th/5th clutch (B), 4th gear collar (C), and transmission housing bearing (D) on the mainshaft (E). Do not install the O-rings during inspection.

1. Install the idler gear (F) on the mainshaft by a press, then install the conical spring washer (G) and locknut (H).

1. Tighten the locknut to 29 N·m (3.0 kgf·m, 22 lbf·ft).