Desa BY150ECA - Manual (Page 12)

12
102424
Nozzle
1. Remove upper shell (see page 10).
2. Remove fan (see page 10).
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 Figure 14).
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 (9.1-12.4 n-m /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 10).
17. Replace fan guard and upper shell.
Spark Plug
1. Remove upper shell (see page 10).
2. Remove fan (see page 10).
3. Remove spark plug wire from spark
plug.
4. Remove spark plug from burner head
using 13/16" open-end wrench.
5. Clean and regap spark plug elec-
trodes to .075" gap.
6. Install spark plug in burner head.
7. Attach spark plug wire to spark plug.
8. Replace fan (see page 10).
9. Replace fan guard and upper shell.
Figure 12 - Spark Plug Removal
Figure 13 - Spark Plug Gap
Gap
Bend Here
to Adjust
Gap
Spark Plug Wire
Spark
Plug
Burner Head
Air Line Hose
Screw
Combustion
Chamber
Burner Head
Spark Plug Wire
Spark
Plug
Fuel Line Hose
Figure 14 - Removing Burner Head
Figure 15- Removing Nozzle
Nozzle
Face
Nozzle Seal
Nozzle
Burner
Head
Fuel Line
Fitting
Air Line
Fitting