Sears 583.3565 Pump Pressure Adjustment, Fuel Filter, Spark Plug, 35/55,000 Btu/Hr Models

Pump Pressure

Adjustment

1.Remove pressure gauge plug from filter end cover.

2.Install accessory pressure gauge (part number 583.35802).

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.

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 (110,000 Btu/Hr Model only) 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

(35/55,000 Btu/Hr Models)

1.Remove upper shell (see page 10).

2.Remove fan (see page 10).

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" nut-driver and remove burner strap.

6.Place hex-body of spark plug into vise and tighten.

7.Remove spark plug mounting nut using 11/16" open-end wrench.

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 18, page 12).

Continued

		(35/55,000 Btu/Hr Models Shown)
Pressure		Relief
Gauge
Plug
		Valve
Figure 12 - Pressure Gauge Plug Remova_
	Pump
Model	Pressure
35,000 Btu/Hr	3.0 PSI	Pressure
55,000 Btu/Hr	3.4 PSI
110,000 Btu/Hr	4.5 PSI
		Figure 13 - Adjusting Pump Pressure
		Fuel Filter, Bushing,- ....	Upper
		and Lower Fuel Line
Fuel Filter		l	Fuel
			Line
		,/

	Upper Fuel Line
Side Cover	Side Cover
Figure	14 - Fuel Filter Removal,	Figure	15 - Fuel Filter Re-
35/55, 000 Btu/Hr Models		moval,	110,000 Btu/Hr Model

Combustion	Spark Plug
	Mounting Nut
Chamber "\..		Burner
			Spark
	\.\	Strap
	\\\		Plug	Spark Plug
	o	/
				Wire
		/
				/
				/
			/	/

	y
Air Line jjJJ	Fuel Line Hose
Hose

Figure 16 - Spark Plug Removal, 35/55,000 Btu/Hr Models

Bend Here

to Adjust Gap

.055" Gap	Il!
Figure 17 - Spark Plug Gap, 35/55, 000 Btu/Hr Models

100506