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10
106068
PORTABLE FORCED AIR HEATER
200,000 BTU/HR
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 (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 8).
17. Replace fan guard and upper shell.
NOZZLE
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
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 Fig-
ure 16, page 11).
SPARK PLUG
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
3. Remove spark plug wire from spark plug.
4. Remove spark plug and wave spring
washer from burner head using 13/16"
open-end wrench.
5. Clean and regap spark plug electrodes
to .110 gap.
6. Install spark plug and wave spring
washer in burner head. Torque 40 to 60
inch-pounds. Then adjust (if necessary)
to bring side electrode into the accept-
able range (see Figure 14).
7. Attach spark plug wire to spark plug.
8. Replace fan (see page 8).
9. Replace fan guard and upper shell.
Figure 13 - Spark Plug Gap
Air Line Hose
Screw
Combustion
Chamber
Burner Head
Spark Plug Wire
Spark
Plug
Fuel Line Hose
Figure 15 - Removing Burner Head
270˚
ACCEPTABL
E
FOR SIDE EL
E
Figure 12 - Spark Plug Removal
Gap
Bend Here to
Adjust Gap
Spark Plug
Wire
Spark
Plug
Burner Head
Figure 14 - Acceptable Range For Side
Electrode
Side Electrode
Wave Spring
Washer
Wave Spring
Washer
270°
Acceptable
Range For
Side
Electrode
SERVICE
PROCEDURES
Continued