2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 163Get this manual
Bracket unit
3Install new oil seals into the oil seal housing
S6D87140
S6D87120
Oil seal installer 1: YB-06023 Driver handle (small) 2: YB-06229
Roller bearing installerremover 4: YB-06432 Driver handle (large) 2: YB-06071 4Install new o-rings and the gasket, and then tighten the screws to the specified torque
Checking the drive shaft bushing
1Check the drive shaft bushing for wear or cracksReplace if necessary
Disassembling the oil pan