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104252
PORTABLE FORCED AIR HEATER
70,000 AND 100,000 BTU/HR
Nozzle
1. Remove upper shell (see page 8).
2. Remove fan (see page 12).
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).
9. Blow compressed air thru 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/
9.1-12.4 n-m).
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 12).
17. Replace fan guard and upper shell.
Figure 15 - Removing Burner Head
Spark
Plug
Combustion
Chamber
Burner Head
Air Line Hose
Fuel Line
Spark Plug
Wire/Boot
Figure 16 - Removing Nozzle
Nozzle
Face
Nozzle
Burner
Head
Screw
Nozzle
Seal
SERVICE
PROCEDURES
Continued