Desa 20, 44 kW (150, 8 (30, 5 (70, 4 (90, 26, 000 Btu/Hr) Spark Plug, Remove upper shell see page

Spark Plug

(20,5/26,4/44 kW [70/90/150,000 Btu/Hr] Models)

1.Remove upper shell (see page 10).

2.Remove fan (see page 19).

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 electrodes to .055"

(1.4 mm) gap.

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace fan (see page 19).

9.Replace fan guard and upper shell.

	(20,5/26,4 kW [70/90,000 Btu/Hr] Model Shown)
Burner	Spark Plug Wire
Head

Spark

Plug

Figure 18 - Spark Plug Removal, 20,5/26,4/44 kW

(70/90/150,000 Btu/Hr) Models

Bend Here to Adjust Gap

.055" (1.4 mm) Gap

Figure 19 - Spark Plug Gap, 20,5/26,4/44 kW (70/90/150,000 Btu/Hr) Models

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