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102748
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 17).
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 as follows:
• 20.5/26.4 kW models:
.055" (1.4 mm)
• 44 kW models: .110"
(2.8 mm)
6. Install spark plug in burner
head.
7. Attach spark plug wire to
spark plug.
8. Replace fan (see page 17).
9. Replace fan guard and
upper shell.
Figure 15 - Spark Plug Gap, 20,5/26,4/44 kW (70/90/150,000 Btu/Hr) Models
Figure 14 - Spark Plug Removal, 20,5/26,4/44 kW
(70/90/150,000 Btu/Hr) Models
Burner
Head
Bend Here
to Adjust
Gap
Gap
(20,5/26,4 kW [70/90,000 Btu/Hr] Model Shown)
Spark Plug Wire
Spark
Plug