Desa BY150ECA owner manual Spark Plug, Nozzle

Spark Plug

1.Remove upper shell (see page 10).

2.Remove fan (see page 10).

3.Remove spark plug wire from spark plug.

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

5.Clean and regap spark plug elec- trodes to .075" gap.

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace fan (see page 10).

9.Replace fan guard and upper shell.

Nozzle

1.Remove upper shell (see page 10).

2.Remove fan (see page 10).

3.Remove fuel and air line hoses from burner head.

4.Remove spark plug wire from spark plug.

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

6.Remove three screws using

5/16" nut-driver and remove burner head from combustion chamber.

7.Place burner head into vise and lightly tighten.

8.Carefully remove nozzle from burner head using 5/8" socket wrench (see Figure 14).

9.Blow compressed air through face of nozzle. This will free any dirt in nozzle area.

10.Inspect nozzle seal for damage.

11.Replace nozzle into burner head and tighten firmly (9.1-12.4 n-m /80-110 inch-pounds).

12.Attach burner head to combustion chamber.

13.Install spark plug in burner head.

14.Attach spark plug wire to spark plug.

15.Attach fuel and airline hoses to burner head.

16.Replace fan (see page 10).

17.Replace fan guard and upper shell.

12

Burner Head Spark Plug Wire

Spark

Plug

Figure 12 - Spark Plug Removal

Bend Here to Adjust Gap

Gap

	Figure 13 - Spark Plug Gap
Combustion
Chamber	Burner Head

Spark Plug Wire

Screw	Spark
	Plug
Air Line Hose	Fuel Line Hose
	Figure 14 - Removing Burner Head

Nozzle	Nozzle Seal
Face
Nozzle

Burner

HeadFuel Line

Fitting

Air Line

Fitting

Figure 15- Removing Nozzle

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