1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 113Get this manual
I ntake Manifold The gasket surfaces must be clean and free of gasket material and sealerUse straight edge to check the surfaces lengthwise and across the manifoldIf the manifold is warped it can usually be corrected by lapping the manifold on surface plateWash manifold in solvent and blow dry using compressed airIf recirculation check valves have been removed, tighten to torque of 8,5-9,6 Nm (75-85 inIbs Removal of Primer Solenoid Electric Start Models