Pump Rotor - Desa 50 Owner's Manual

8. Carefully remove nozzle from
burner head by using 5/8" socket
wrench (see Figure 26).
9. Blow compressed air thru 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/9.1-12.4 n-m).
12. Attach burner head to combustion
chamber.
13. Install spark plug in burner head.
14.Attach spark plug cable to spark
plug.
15. Attach fuel and airline hoses to
burner head.
16. Replace fan (see page 12).
17. Replace fan guard and upper shell.

Pump Rotor

(Procedure if rotor is binding)
1. Remove upper shell (see page 12).
2. Remove filter end cover screws
using 5/16" nut-driver.
3. Remove filter end cover and air
filters.
4. Remove pump plate screws using
5/16" nut-driver.
5. Remove pump plate.
6. Remove rotor, insert, and blades.
7. Check for debris in pump. If debris
is found, blow out with compressed
air.
8. Install insert and rotor.
9. Check gap on rotor. Adjust to
.003"/.004" (.076-.101 mm) if
needed (see Figure 29).
Note: Rotate Rotor one full turn to
insure the gap is .003"/.004" (.076-.101
mm) at tightest position. Adjust if
needed.
10. Install blades, pump plate, air filters,
and filter end cover.
11. Replace fan guard and upper shell.
12. Adjust pump pressure (see page 13).
Note: If rotor is still binding, proceed as
follows.
16
Nozzle
100 ROTOR-Domestic
Continued
Nozzle Face
Nozzle Seal
Burner Head
Figure 26 - Removing Nozzle, 70/100/150 Models
Insert
Rotor
50 ROTOR-Domestic
PFA/P 056B
Air Output
Filter
Figure 27 - Rotor Location, 35/50/70 Models
Blade
Insert
Rotor
PFA/P 059A
Air Output
Filter
Figure 28 - Rotor Location, 100/150 Models
Fuel Line Fitting
Air Line Fitting
Blade
Air Intake
Pump Filter
Plate
Filter End
Cover
Air Intake
Pump
Filter
Plate
Filter End
Cover
Fan Guard
Fan Guard
099618