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
6). 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.
Fuel Filter
1.Remove side cover screws using 5/16"
2.Remove side cover.
3.Pull upper fuel line off fuel filter neck.
4.Carefully pry bushing and fuel filter 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.
Spark Plug
1.Remove upper shell (see page 9).
2.Remove fan (see page 9).
3.Remove fuel and air line hoses from nozzle assembly.
4.Remove spark plug wire from spark plug.
5.Remove two screws using 5/16"
6.Place
7.Remove spark plug mounting nut using 11/16"
8.Remove burner strap from spark plug.
9.Clean and regap spark plug electrodes to .055" gap.
10.Replace burner strap onto spark plug. Rotate burner strap to position spark plug electrodes (see Figure 12, page 11).
Continued
Pressure |
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| Relief |
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| Valve | |
Gauge |
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Plug |
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| Pressure |
Figure 7 - Pressure Gauge Plug Removal | Gauge | ||
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| Pump |
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Model | Pressure |
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35,000 | Btu/Hr | 3.0 PSI |
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50,000 | Btu/Hr | 3.4 PSI |
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55,000 | Btu/Hr | 3.4 PSI |
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Figure 8 - Adjusting Pump Pressure
Fuel Filter
Upper Fuel Line
Side Cover
| Figure 9 - Fuel Filter Removal |
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Combustion | Spark Plug |
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Mounting Nut |
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Chamber | Burner | Spark |
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| Strap | Spark Plug | |
| Plug | ||
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| Wire |
Nozzle Assembly | |
Air Line | Fuel Line Hose |
Hose |
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Figure 10 - Spark Plug Removal | |
| Bend Here |
| to Adjust |
| Gap |
.055" Gap | |
Figure 11 - Spark Plug Gap | 9 |
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