Mercury 45 Service Manual

CARBURETOR
Page 3B-14 90-828631R3 MARCH 1999
Choke Cam Angle Adjustment
NOTE: Choke cam angle adjustment is required when #4 carburetor has been replaced or
overhauled.
1. Measure gap “a” and refer to the thermal gap graph, if out of specification adjust.
2. Adjustment steps:
a. Loosen cam angle adjustment screw.
b. Find the gap for the temperature on the graph.
c. Adjust and tighten the cam angle adjustment screw with the specified gap “a”.
a
b
a-Gap
b-Cam Angle Adjustment Screw
THERMAL GAP GRAPH
Gap (mm)
Temp. (°C)

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