Operator`s manual
COOLANT 
RECOVERY 
TANK 
PRESSURE  CAP 
COOLANT 
PASSAGE 
EXHAUST 
MANIFOLD 
Coolant Recovery Tank, Recommended Installation 
Fill the fresh water system as follows: 
I. 
Remove the pressure cap from the manifold. 
2. 
Pour a  clean, antifreeze mixture into the  manifold and allow enough time for  the coolant to  fill  the 
fresh water cooling system. 
3. 
Start the engine and allow  it to  come  up to  its  operating temperature.  Monitor  the coolant in  the 
manifold and add antifreeze coolant as air is  expelled. 
Once all air is  expelled from  the system,  fill  the 
manifold to the filler neck and install the pressure cap.  Open the air bleed petcocks, each in turn, located 
on the upper inboard side 
of 
the manifold 
to 
allow any air in that area 
of 
the manifold to escape.  Close 
the petcock securely. 
4. 
Remove the plastic cap from the plastic coolant recovery tank and fill  the tank with coolant halfway 
between the ADD mark and the MAX mark.  Replace the plastic cap. 
5. 
Run the engine and observe the coolant's expansion flow into the plastic recovery tank. 
6.  Check for leaks between the pressure cap/filler neck and the plastic recovery tank. 
Stop the engine and 
allow it to cool.  Coolant should be drawn back into the cooling system as the engine's temperature comes 
down.  Check the coolant passage in the filler  neck to ensure it is open to flow.  Clean it with a  heavy 
piece 
of 
wire periodically to ensure it remains open.  Once a season or more should you find it necessary. 
7.  Add coolant to the recovery tank, as required, to top off the fresh water coolant system and periodically 
check to see that the manifold is full 
of 
coolant by removing the pressure cap when 
the 
engine is cold. 
45 
WESTERBEKE 
GENERATORS 










