Oil Pressure Switch - Mercury 40 Service Manual

CYLINDER BLOCK/CRANKCASE
Thermostat
1. Measure the lift of the thermostat at the operating water temperature listed.

Oil Pressure Switch

1. Check continuity of switch.
Page 4B-26
Water Temperature
136 -143 F (58 - 62 C)
Above 158 F (70 C)
Oil Switch Continuity Check
Below 2.9 psi (20.0 kPa)
Above 2.9 psi (20.0 kPa)
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Valve Lift
0 in. (0 mm)
Minimum 0.12 in. (3 mm)
Continuity
No Continuity
90-828631R3 MARCH 1999
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