1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 222Get this manual
11Tighten the upper crankcase head screws to torque of 1416 Nm (10-12 ftIbs12Tighten the lower crankcase head and bearing retainer plate screws to torque of 11-14 Nm (8-10 ftIbs13Seat the four water deflectors
in the cylinder block[14I nstall cylinder heads, using new gaskets coated lightly with OMC Gasket Sealing Compound(Do not use sealer if gasket is so marked Follow instructions printed on the gasketTighten cylinder screws to torque of 24-27 Nm (18-20 ftIbs, following the sequence shown