Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 163Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 163

Cylinder Block Reassembly Selecting New Main Bearings
1Locate the main bearing code letters on the cylin der block
Main Bearing Installation
IMPORTANT: Do not interchange used main bear-

ingsReinstall in their original position1Check clearance of each bearing, following procedure in Cleaning and Inspection2Clean aU the oil from the ain bearing surfaces on the cylinder block and crankcase cover3Install main bearingsMake sure the locki ng lug on each bearing fits into its notch

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