1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 394Get this manual
3 Reverse Lock Does Not HoldabcdefFilter valve seatImpact sensor valve
Manual release valve Tilt cylinder
valves or seals
Reverse lock check valve Oil lines
4Trim Pulls in When Reverse Lock Does Not HoldaTrimtilt separation valve
bTrim check valve 5Slow Up or Down(See Troubleshooting with Ammeter for maximum time abcde6Pump malfunctionsMotor malfunctionsTrim down pump relief valve Mechanical bindingExpansion relief valve
(down only)
Will Not Trim or Tilt in Either DirectionMotor runs fastlow current drawabPump coupling brokenLow oilor no oil in pump cavity
Electric motor does not runhigh current or no currentaMotor or pump bound up