Mercury 45 Service Manual

CYLINDER BLOCK/CRANKCASE
Page 4B-26 90-828631R3 MARCH 1999
Thermostat
1. Measure the lift of the thermostat at the operating water temperature listed.
55843
Water Temperature Valve Lift
136° -143° F (58° - 62° C) 0 in. (0 mm)
Above 158° F (70° C) Minimum 0.12 in. (3 mm)
Oil Pressure Switch
1. Check continuity of switch.
55845
Oil Switch Continuity Check
Below 2.9 psi (20.0 kPa) Continuity
Above 2.9 psi (20.0 kPa) No Continuity

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