1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 64Get this manual
Engine Synchronization and AdjustmentsAll Models Purpose Reliable troubleshooting cannot be done if linkages and settings are out of adjustment in the first placeStart with this basic inspection and adjustment procedure to make sure the trouble shooting is starting where it should, and you are not being misled by other unrelated troublesInspection GeneralAre there any loose screws or missing parts? Lubrication neglected? Does the motor look as if lubrication has been
Fuel SupplyIs it clean, fresh, and the correct mixture? Adjustments Follow this sequence of steps for basic engine set-up
Engine Synchronization and Adjustment65
On remote start modelsremove both remote control cables from the engine before performing the following synchronizations and adjustmentsSet Timing Pointer INotellf the timing pointer or intake manifold has been disturbed, check the top dead center timing pointer alignment1To prevent accidental starting of the motor, disconnect the spark plug leads and remove the spark plugs