2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 177Get this manual
Bracket unit 3Remove the armature from the PTT motor base
Disassembling the power trim and tilt motor
1Remove the power trim and tilt motor, Oring, and joint from the power trim and tilt unit
CAUTION:
Do not allow grease or oil to contact the commutator4Remove the screws 2, and then disassemble the PTT motor base
S6D87300