Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 245Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 245

CYLINDER BLOCKICRANKCASE
CRANKSHAFT MAIN BEARING CLEARANCE MEASUREMENT IMPORTANT: Do not Interchange the main bearingsReinstall In their original position1Clean all the old sealing material from the split line on the crankcase cover and cylinder block2Clean all the oil from the following areas: aMain bearing surfaces on the cylinder block and crankcase coverbMain bearingscCrankshaft bearing surfaces3Install main bearings halves into the cylinder block4Install crankshaftNOTE: Align each bearing projection with the notch in the cylinder block

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