Owner`s manual

FRESH WATER
1. Coolant (fresh water with antifreeze) is introduced into the system from the coolant section of
exhaust manifold
by removing pressure cap and filling manifold tank to within one inch of
lower
rim of fill port.
2. Fresh water engine driven circulating pump moves coolant from heat exchanger through
engine block circulating pump and thermostat back through exhaust manifold into heat ex-
changer to
be cooled.
The manifold serves
as the engine expansion tank to allow for expansion of coolant as it is
heated. You also fill the system at this point.
In some cases when hot water heaters are in-
stalled
an expansion or surge tank may be required to prevent air from entering the system.
Should your engine overheat, first check coolant level to make sure it is not low which would
cause air locks to develop.
If air does enter the system, it may require a couple of fillings to
remove the air pocket. A momentary increase of engine R.P.M. to approximately
2800 to
3000 R.P.M. may aid in moving the air from the system. In some cases it may require dOing
this 2 or 3 times. Do this just as you notice the temperature starting to rise above normal.
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