1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 397Get this manual
Both Up and Down Circuits (Turn on key switch for voltage testsWherever continuity checks are made, disconnect the battery cables at the battery
1Make sure battery is fully charged (Check connectors from junction box to tilt motor and to sending unit for good con nection
2With voltmeter, connect red lead to Point the terminal strip in junction box and meter black lead to Point GMeter should indicate battery voltage
3If no voltage is indicated, move meter red lead to Point E2 terminal on starter solenoidIf battery voltage is indicated, check red lead and connections to junction boxIf junction box is equipped with fuse, check fuse and lead assemblyIf no voltage, check red and black battery leads to engine for poor con nection or open circuit
Down Circuit 1Move red meter lead to Point E3 in junction boxPush trim switch in down position Battery voltage should be indicatedIf voltage is indicated, check for voltage at Point E4If voltage is indicated, move red lead to Point E5 with trim switch held in down positionIf voltage is indicated, check connector C2 If connector checks okay and motor does not runtest motor