Mercury 45 Service Manual

CYLINDER BLOCK/CRANKCASE
Page 4B-2790-828631R3 MARCH 1999
Cylinder Block Reassembly
Selecting New Main Bearings
1. Locate the main bearing code letters on the cylinder block.
2. Refer to the following reference chart to select the correct main bearings.
3. Use the color coded main bearings that match the main bearing code letter.
Main Bearing Code
Letter
Main Bearing Color Code
A Blue
B Black
C Brown
53819
#1
#2
#3
#4
#5
#1
#2
#3
#4
#5
A B C
a
b
a-Main Bearing Code Letters
b-Main Bearing Identification Color Location

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