1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 389Get this manual
Return to Water 1The weight of the motor drives the tilt rod and piston downward, forcing oil from the bottom of the cylinder through the open impact letdown valve and to the reservoir 2The filter valve is opened and allows oil from the reservoir to flow to the top of the cylinder3The letdown control piston leaks down, allowing the impact letdown valve to close
Testing Procedures100 and 155
Battery Battery must be charged to specific gravity of 1.260 to 1.280 (fully charged)Oil Filling and Bleeding Filling Fill reservoir to the plug levelRun motorthen recheck oil levelCycle unit several times, check oil when trim and tilt cylinders are fully extendedA minimum of five (5) complete cycles (adding oil as needed) is required to purge air from the systemTotal oil capacity is 740 mL (25 floz10-8