The most critical factor in getting your
kerosene torpedo heater to run is the
air pressure that the pump puts out. This air pressure is what pulls the fuel out of the bottom of the heater. It is very important that this is set correctly.
You will need a low pressure gauge (0-15 PSI) and a screw driver to make this adjustment.
On the back of your heater there will be a short and a long protrusion. Pull the plug out of the short one and insert the pressure gauge. The longer one is the adjuster screw. This is a very simple device that has a ball a spring and a set screw. Turn in on this screw just places more tension on the ball to allow less air to escape and raise the pressure inside the heater.
If you cannot get a high enough pressure then there is a leak or the pump is worn too much. To check for a leak use soapy water and check all the parts. The black plastic back can crack or the cork of the pump gasket can leak. Sometimes the rotor and vanes will go bad but not likely.
So, insert the pressure gauge in the short port, start the motor and check reading, you will only have a short time to do this if your heater is not firing. Turn the longer screw in or clockwise to raise the pressure and out CCW to decrease the pressure. Adjust to factory specs. And you will be getting warmed up.
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