Mercury Bravo Three Operation & Maintenance Manual page 108

Excessive Engine Temperature
Possible Cause
Seacock closed.
Drive belt loose or in poor
condition.
Seawater pickups
structed.
Faulty thermostat.
Coolant level low in closed
cooling section
Equipped).
Heat exchanger
plugged with foreign mate-
rial (If Equipped).
Loss of pressure in closed
cooling section
Equipped).
Closed cooling
dirty (If Equipped).
Faulty seawater
pump.
Seawater discharge re-
stricted or plugged.
Insufficient Engine Temperature
Possible Cause
Faulty Thermostat.
106
Remedy
Open.
Replace and/or adjust belt.
ob- Remove obstruction.
Replace.
Check for cause of low
(If coolant level and repair. Fill
system with proper coolant
solution.
cores Clean heat exchanger.
Check for leaks. Clean, in-
(If spect and test pressure
cap.
section Clean.
pickup Repair.
Clean exhaust elbows.
Remedy
Replace.