Spark Plug - Desa REM200T Owner's Manual

200,000 BTU/HR
PORTABLE FORCED AIR HEATER
SERVICE
PROCEDURES
Continued

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.
Burner Head
Wave Spring
Washer
Spark
Plug
Figure 12 - Spark Plug Removal
Figure 13 - Spark Plug Gap
Side Electrode
Figure 14 - Acceptable Range For Side
Electrode
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).
Combustion
Chamber
Screw
Air Line Hose
Spark Plug
Wire
Figure 15 - Removing Burner Head
Bend Here to
Adjust Gap
Gap
270
Acceptable
Range For
270˚
ACCEPTABLE
Side FOR SIDE ELE
Electrode
9.
10. Inspect nozzle seal for damage.
11. Replace nozzle into burner head and
12. Attach burner head to combustion
13. Install spark plug in burner head.
14. Attach spark plug wire to spark plug.
15. Attach fuel and airline hoses to burner
16. Replace fan (see page 8).
17. Replace fan guard and upper shell.
Fuel Line Hose
10
Blow compressed air through face of
nozzle. This will free any dirt in nozzle area.
tighten firmly (80-110 inch-pounds).
chamber.
head.
Burner Head
Spark Plug Wire
Wave Spring
Washer
Spark
Plug
106068