OMC Stern Drives And Motors 1964-1986 Repair Manual., Page 511Get this manual
APPENDIX
Maximum Taper Wear Limit Lifter Bore Diameter Main Bearing Bore Diameter Cylinder Block Distributor Shaft Bearing Bore Diameter Head Gasket SurfFlatness Crankshaft to rear face of block runout TR Max, VALVE R-ER PUSH AND TAPPEE Rocker Arm Lift Ratio Valve Push Rod (MaxRunout) Valve Lifter StdDiameter Clearance to bore Wear Limit Hydraulic Lifter Leakdown rate Collapsed Tappet Gap AIIowable Desired VALVES Valve Stern to Vahe Guide Clearance Intake Exhaust