11
102424
Pump Pressure
Adjustment
1. Remove pressure gauge plug from
filter end cover.
2. Install accessory pressure gauge
(part number HA1180).
3. Start heater (see Operation, page
7). Allow motor to reach full speed.
4. Adjust pressure. Turn relief valve
to right to increase pressure. Turn
relief valve to left to decrease
pressure. See specifications at right
for correct pressure for each model.
5. Remove pressure gauge. Replace
pressure gauge plug in filter end
cover.
Relief
Valve
Pressure
Gauge
Plug
Figure 9 - Pressure Gauge Plug Removal
Pump
Model
Pressure
100,000 Btu/Hr
4.5 PSI
150,000 Btu/Hr
5.0 PSI
Fuel Filter
1. Remove side cover screws using
5/16" nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter
neck.
4. Carefully pry bushing, fuel filter,
and lower fuel line out of fuel tank.
5. Wash fuel filter with clean fuel and
replace in tank.
6. Attach upper fuel line to fuel filter
neck.
7. Replace side cover.
Figure 10 - Adjusting Pump Pressure
Pressure
Gauge
Side Cover
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel Line
Figure 11 - Fuel Filter Removal
