Yamaha F100B F100C Outboards Factory Service Manual, Page 195Get this manual
Drive shaft and lower case (F100C) CAUTION:
Add or remove shims, if necessary, when replacing the forward gear or lower caseBearing outer race attachment 6: 90890-06621 Driver rod LL 7: 90890-06605
Assembling the drive shaft
1Install the new drive shaft bearing into the drive shaft using press
Assembling the forward gear
1Install the new needle bearing into the forward gear to the specified depthBearing inner race attachment 1: 90890-06643
Installing the drive shaft
1Install the forward gear to the lower case2Install the drive shaft assembly, pinion, and pinion nut, and then tighten the nut to the specified torqueNeedle bearing attachment 1: 90890-06609 Driver rod L3 2: 90890-06652