Owner`s manual

8. Enters thermostat which remains closed during warm up, permitting a small amount of water
to enter exhaust system for cooling and overboards.
9.
As engine temperature rises the thermostat starts to open, permitting hot water to enter ex-
haust line. At the same time the same amount of cool sea water is drawn in by the pump to
replace the discharge hot water. This is done through the mixing tee which
is located below
engine (or water line) to prevent air from entering the system.
10. There may be some fluctuation in engine temperature until engine stabilizes.
11.
In areas of cold inlet say 50°, you may notice some movement from 135° to 155° as engine
R.P.M. are changed. This is less noticeable with warmer inlet water. The reason being that
the colder water causes thermostat to react faster than engine temperature stabilizes.
12.
It may appear at first that no water is being pumped overboard with the exhaust gases.
However as long as water temperature is within operating range (135° - 155°), there is a flow
of water being pumped overboard which may be noticed
·only as a fine mist. This will con-
tinue until the thermostat directs the water flow overboard to allow for greater intake of
cooler sea water.
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