200,000 Btu/Hr

PORTABLE FORCED AIR HEATER

SERVICE

PROCEDURES

Continued

SPARK PLUG

1.

Remove upper shell (see Upper Shell

 

Removal, page 8).

2.

Remove fan (see Fan, page 8).

3.

Remove spark plug wire from spark

 

plug (see Figure 12).

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 (see Figure 13).

Side

Electrode

270° Acceptable Range For Side Electrode

Figure 14 - Acceptable Range For Side Electrode

6.

Install spark plug and wave spring

 

washer in burner head. Torque 40 to

 

60 inch-pounds. Then adjust (if nec-

 

essary) to bring side electrode into the

 

acceptable range (see Figure 14).

7.

Attach spark plug wire to spark plug.

8.

Replace fan (see Fan, page 8).

9.

Replace fan guard and upper shell (see

 

Upper Shell Removal, page 8)

 

Wave

Spark

Burner

Plug

Spring

Head

Wire

Washer

 

 

Spark

Plug

NOZZLE

1.Remove upper shell (see Upper Shell Removal, page 8).

2.Remove fan (see Fan, 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).

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 Fan, page 8).

17.Replace fan guard and upper shell (see Upper Shell Removal, page 8).

Figure 12 - Spark Plug Removal

Bend Here to

Adjust Gap

Gap

Figure 13 - Spark Plug Gap

Combustion

Chamber

Burner Head

Spark Plug Wire

Wave Spring

Washer

 

Spark

Screw

Plug

 

Air Line Hose

Fuel Line Hose

 

Figure 15 - Removing Burner Head

10

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Image 10
Desa R200, REM200, B200 owner manual Spark Plug, Nozzle

REM200, B200, R200 specifications

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