
160
COOLING SYSTEM
COMPONENTS
Pressure Relief Valve
A pressure relief valve is used to control water
flow and operating temperature at higher speeds
(above approximately 2800 RPM). The pressure
relief valve opens as water pressure increases.
Spring tension sets the opening pressure.
Overheating:
A restricted or faulty valve typically
results in HIGH SPEED overheating.
Overcooling:
Debris may prevent the valve from
closing completely.
Thermostat
The thermostat controls water flow and operating
temperature at lower speeds (below 1800 RPM).
Overheating:
A restricted or faulty thermostat typ-
ically results in LOW SPEED overheating.
Overcooling:
Debris may prevent the thermostat
from closing completely.
Pressure relief valve components
007369
1.
Spring, thermostat and gasket
2.
Cylinder head
007370
1
2
Содержание Evinrude E-TEC Series
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