Mercury 1.7 MI User Manual

TROUBLESHOOTING
SECTION 7
CMD-3967823 / 90-865237030 OCTOBER 2003 Page 105
CE537
Excessive Engine Temperature
Possible Cause Remedy
Water inlet or seacock closed. Open.
Seawater inlet hose kinked (restricted)
Position hose to prevent kinking
(restriction).
Use of improperly designed hose on inlet
side of seawater pump allowing it to
collapse.
Replace hose with wire reinforced design.
Drive belt loose or in poor condition. Replace or adjust belt.
Seawater pickups or sea strainer
obstructed.
Remove obstruction.
Seawater discharge restricted or plugged.
Have inspected by an authorized
Cummins MerCruiser Diesel dealer /
distributor.
Coolant level low in closed cooling
section.
Check for cause of low coolant level and
repair. Fill system with proper coolant
solution.
Heat exchanger cores plugged with
foreign material
Have inspected by an authorized
Cummins MerCruiser Diesel dealer /
distributor.
Loss of pressure in closed cooling section.
Check for leaks. Clean, inspect and test
pressure cap.
Faulty thermostat.
Have inspected by an authorized
Faulty seawater pickup pump.
Have inspected by an authorized
Cummins MerCruiser Diesel dealer /
di t ib t
Faulty engine water circulating pump.
distributor.
CE538
Insufficient Engine Temperature
Possible Cause Remedy
Faulty thermostat.
Have inspected by an authorized
Cummins MerCruiser Diesel dealer /
distributor.
INDEX

Mercury 1.7 MI Specifications

General

Brand	Mercury
Model	1.7 MI
Category	Engine
Language	English