Desa CP350AK Fan Blades And Air Deflectors, Spark Plug, Nozzle, Service Procedures, Continued

SERVICE PROCEDURES

9

SERVICE PROCEDURES

Continued

FAN BLADES AND AIR DEFLECTORS

1.Remove upper shell (see Upper Shell Removal, page 8).

2.Clean fan blades and air deflectors with clean, soft cloth moist- ened with kerosene or solvent (see Figure 7).

3.Dry fan blades and air deflectors thoroughly.

4.Replace upper shell.

Air Deflector

Fan Blade

Figure 7 - Fan Blades and Air Defl ectors

SPARK PLUG

1.Remove upper shell (see Upper Shell Removal, page 8).

2.Remove spark plug wire from spark plug (see Figure 8).

3.Remove spark plug from burner head using 13/16" open-end wrench (see Figure 8).

4.Replace spark plug if damaged or heavily coated with carbon.

5.Clean and regap spark plug electrodes to .075 inch (see Figure 9).

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace upper shell.

Burner Head Spark Plug

Spark

Plug Wire

Figure 8 - Spark Plug Removal

.075 inch

Figure 9 - Spark Plug Gap

NOZZLE

1.Remove upper shell (see Upper Shell Removal, page 8).

2.Remove fuel line from solenoid valve using 7/16" wrench.

3.Remove spark plug wire from spark plug.

4.Remove spark plug from burner head using 13/16" open-end wrench.

5.Remove five screws using 5/16" nut-driver and remove burner head from combustion chamber.

6.Place burner head into vise and lightly tighten.

7.Carefully remove nozzle from burner head using 5/8" socket wrench (see Figure 10).

8.Inspect nozzle for damage. If damaged or clogged, replace nozzle.

9.Make sure plug is in place on burner head.

10.Replace nozzle into burner head and tighten firmly (175-200 inch-pounds).

11.Attach burner head to combustion chamber.

12.Install spark plug in burner head.

13.Attach spark plug wire to spark plug.

14.Attach fuel line to solenoid valve. Tighten firmly.

15.Replace upper shell.

	Plug
	Spark Plug
	Spark
Nozzle	Plug
	Wire
	Solenoid
Burner	Valve
Head

Fuel Line

Figure 10 - Replacing Nozzle

PUMP PRESSURE ADJUSTMENT FOR HEATERS WITH FUEL FILTER/CANISTER EXTERNAL TO PUMP

1.Remove pressure gauge plug from fuel pump port marked “GAUGE.”

2.Install accessory pressure gauge (part number 110380-01) to fuel pump port marked “GAUGE” (see Figure 11, page 10).

3.Start heater (see Operation, page 4).Allow motor to reach full speed.

4.Adjust pressure. Use small flat blade screwdriver to turn slot- ted screw at fuel pump pressure adjusting port. Turn screw clockwise to increase pressure. Turn screw counterclockwise to decrease pressure. See specifications in Figure 11, page 10, for correct pressure for each model.

105850-01D