Mercury 45 Service Manual

CYLINDER BLOCK/CRANKCASE
Page 4B-28 90-828631R3 MARCH 1999
Main Bearing Installation
IMPORTANT: Do not interchange used main bearings. Reinstall in their original posi-
tion.
1. Check clearance of each bearing, following procedure in Cleaning and Inspection.
2. Clean all the oil from the main bearing surfaces on the cylinder block and crankcase
cover.
3. Install main bearings. Make sure the locking lug on each bearing fits into its notch.
a
b
a-Main Bearings
b-Fit the Locking Lugs into the Notches

Mercury 45 Specifications

General

Horsepower	45 HP
Cylinders	3
Starting	Electric
Full Throttle RPM Range	5000-6000 RPM
Steering	Remote
Exhaust	Through Prop
Shaft Length	20 in