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MAINTENANCE
PUMP PRESSURE ADJUSTMENT
While heater is operating, turn relief valve clockwise to increase,
counterclockwise to decrease. Use flat blade screwdriver to turn valve.
Correct pump pressure is as follows: 4.0 PSI (tolerance ± 10%).
For best measurement of pressure, test with full tank of fuel. Optimum
pressure occurs when the nose cone is cherry red and there are no
extending flames from the heater.
HK070F HK125FW, HK175FW, HK215FW
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