Mercury 40 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 40 Specifications

General

Horsepower	40 hp
Starting System	Electric
Steering	Remote
Fuel Induction System	EFI (Electronic Fuel Injection)
Shaft Length	20"
Full Throttle RPM Range	6000