MASTER LOCK B100 User Manual

100743

Spark Plug

(30,000 BTU/Hr Model)

1. Remove upper shell (see

page 10).

2. Remove fan (see page 19).
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 using 11/16"
open-end wrench.

8. Remove burner strap from

spark plug.

9. Clean and regap spark plug

electrodes to .055"
(1.4 mm) gap.

10. Replace burner strap onto

spark plug. Rotate burner
strap to position spark plug
electrodes (see Figure 17).

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 19).
17. Replace fan guard and

upper shell.

Figure 17 - Spark Plug Rotation, 30,000 BTU/Hr Model Only

Bend Here
to Adjust
Gap

Figure 16 - Spark Plug Gap, 30,000 BTU/Hr Model

Figure 15 - Spark Plug Removal, 30,000 BTU/Hr Model

Combustion
Chamber

Burner
Strap

Nozzle
Assembly

Fuel Line
Hose

Air Line
Hose

Spark Plug
Mounting Nut

Spark
Plug

Spark Plug
Wire

.055" (1.4 mm) Gap

Burner
Strap