Nozzle

(35/50 Models)

1.

Remove upper shell (see page 12).

2.

Remove fan (see page 12).

3.

Remove fuel and air line hoses

 

from nozzle assembly.

4.

Turn nozzle assembly 1/4 turn to

 

left and pull toward motor to

 

remove.

5.

Place plastic hex-body into vise

 

and lightly tighten.

6.

Carefully remove nozzle from the

 

nozzle adapter using 5/8" socket

Combustion Chamber

Air Line Hose

Nozzle Burner

Assembly Strap

Fuel Line Hose

Nozzle Assembly

wrench.

7. Blow compressed air thru face of

nozzle. This will free any dirt in

nozzle area.

8. Inspect nozzle seal for damage.

9. Replace nozzle into nozzle adapter

until nozzle seats. Tighten 1/3 turn

more using 5/8" socket wrench (40-

45 inch-pounds/4.5-5.1 n-m).

10. Attach nozzle assembly to burner

strap.

11. Attach fuel and airline hoses to

nozzle assembly.

12. Replace fan (see page 12).

13. Replace fan guard and upper shell.

Nozzle

(70/100/150 Models)

1.Remove upper shell (see page 12).

2.Remove fan (see page 12).

3.Remove fuel and air line hoses from burner head.

4.Remove spark plug cable 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.

Continued

Figure 22 - Removing Air and Fuel

Figure 23 - Removing Nozzle Assembly,

Line Hoses, 35/50 Models

35/50 Models

 

Nozzle Face

Nozzle

 

 

 

 

Seal

 

Nozzle

 

 

Nozzle

 

 

Adapter

 

 

Air Line

 

Fuel Line

 

Fitting

Fitting

 

 

 

Figure 24 - Nozzle and Nozzle Adapter, 35/50 Models

Combustion

 

Spark Plug

Chamber

Burner Head

Cable

 

 

Screw

Spark

Plug

Air Line Hose

Fuel Line Hose

 

Figure 25 - Removing Burner Head, 70/100/150 Models

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Page 15
Image 15
Desa 50 owner manual Nozzle adapter using 5/8 socket

50 specifications

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