Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 252Get this manual
3Place crankcase cover in position on cylinder blockTurn the center main bolts in LITTLE at time, (following torque sequence) compressing crankshaft seal rings until crankshaft cover has been drawn down to cylinder blockTighten eight bolts (a) evenly in three progressive steps (following torque sequence)4Install remaining crankcase cover flange bolts (following torque sequence) 5Tighten end cap bolts to specified torque
52132Torque Bolts to 85 lbin(9.5 Nm)