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SERVICE
PROCEDURES
Continued
Spark Plug
(35,000 Btu/Hr Model)
1. Remove upper shell (see page 8).
2. Remove fan (see page 13).
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 us-
ing 11/16" open-end wrench.
8. Remove burner strap from spark plug.
9. Clean and regap spark plug electrodes
to 1.4 mm (.055") gap.
10. Replace burner strap onto spark plug.
Rotate burner strap to position spark
plug electrodes (see Figure 13).
11. Tighten spark plug with spark plug
mounting nut.
12. Release hex-body of spark plug from vise.
13. Replace burner strap onto combustion
chamber.
14. Attach spark plug wire to spark plug.
15. Attach fuel and air line hoses to nozzle
assembly.
16. Replace fan (see page 13).
17. Replace fan guard and upper shell.
104468
Combustion
Chamber
Spark Plug
Mounting Nut
Air Line Hose
Figure 11 - Spark Plug Removal, 35,000
Btu/Hr Model
Figure 12 - Spark Plug Gap, 35,000 Btu/Hr
Model
Burner Strap
Figure 13 - Spark Plug Rotation, 35,000
Btu/Hr Model Only
9
OWNER'S MANUAL
Burner
Spark Plug
Strap
(70/100/150,000 Btu/Hr Models)
Spark
1.
Remove upper shell (see page 8).
Plug
2.
Remove fan (see page 13).
Spark
Plug
3.
Remove spark plug wire from spark plug.
Wire
4.
Remove spark plug from burner head
using 13/16" open-end wrench.
5.
Clean and regap spark plug electrodes
Nozzle
as follows:
Assembly
70/100,000 Btu/Hr Models:
1.9 mm (.075") gap
Fuel Line Hose
150,000 Btu/Hr Model:
2.8 mm (.110") gap
6.
Install spark plug in burner head.
Bend Here to
7.
Attach spark plug wire to spark plug.
Adjust Gap
8.
Replace fan (see page 13).
9.
Replace fan guard and upper shell.
Burner Head
1.4 mm
(.055") Gap
Figure 14 - Spark Plug Removal, 70/100/
150,000 Btu/Hr Models
Figure 15 - Spark Plug Gap, 70/100/150,000
Btu/Hr Models
Spark Plug Wire
Spark
Plug
Bend Here to
Adjust Gap
Gap
Continued
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