2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 150Get this manual
Tilt cylinder and trim cylinder 7-35 Disassembling the trim cylinder.7-38 Disassembling the tilt cylinder .7-38 Checking the tilt cylinder and trim cylinder 7-39 Checking the valves 7-39 Assembling the tilt cylinder 7-39 Assembling the power trim and tilt unit7-41 Bleeding the power trim and tilt unit 7-43 Installing the power trim and tilt unit 7-44 Bleeding the power trim and tilt unit (built-in) 7-44 Power trim and tilt electrical system 7-45 Checking the fuse7-45 Checking the power trim and tilt relay .7-45 Checking the power trim and tilt switch .7-46 Checking the trim sensor.7-46