Yamaha F100B F100C Outboards Factory Service Manual, Page 167Get this manual
Drive shaft and lower case (F100B) 2Install the new taper roller bearing into the forward gear using press2Apply grease to the new oil seals, and then install them into the drive shaft housing to the specified depth
Bearing inner race attachment 3: 90890-06661
Assembling the drive shaft housing
1Install the needle bearing into the drive shaft housing to the specified depth
NOTE: Install an oil seal halfway into the drive shaft housing, then the other oil sealBall bearing attachment 4: 90890-06633 Driver rod LS 5: 90890-06606 Depth c: 0.250.75 mm (0.010.03 in)