Desa H.S.I. Serie Manual Del Propietário página 14

SERVICE PROCEDURES
Continued
FUEL AND AIR LINE REPLACEMENT
AND PROPER ROUTING
1. Remove upper shell (see Upper Shell Re-
moval, page 9).
2. Remove side cover screws using 5/16" nut
driver (see Figure 15 or 16, page 10 or Figure
17, page 11).
3. Remove side cover.
4. Inspect fuel and air line hoses for cracks and/
or holes. If fuel line hose is damaged, discon-
nect from nozzle adapter (see Figure 21 or 22,
page 12, or Figure 25, page 13) and from fuel
filter (see Fuel Filter, pages 10 and 11). If air
line hose is damaged, disconnect from nozzle
adapter (see Figure 21 or 22, page 12, or Fig-
ure 25, page 13) and from barb fitting on pump
end cover (see Figure 27).
5. Install new air and/or fuel line. Attach one end
of air line hose to barb fitting on pump end
cover (see Figure 27) and the other end to
nozzle adapter (see Figure 21 or 22, page 12,
or Figure 25, page 13). Attach one end of fuel
line hose to fuel filter (see Fuel Filter, pages
10 and 11) and the other end to nozzle adapter
(see Figure 21 or 22, page 12, or Figure 25,
page 13).
Note: Route hoses as shown in see Figure 21
or 22, page 12, or Figure 25, page 13, accord-
ing to model. Hoses are not to touch photo-
cell bracket.
6. Replace side cover.
7. Replace upper shell and fan guard (see Upper
Shell Removal, page 9).
Pump End Cover
Barb
Fitting
Air Hose
40/55/60/70
Models
Figure 27 - Air Hose to Barb Fitting
PUMP ROTOR
(Procedure if Rotor is Binding)
1. Remove upper shell (see Upper Shell Re-
moval, page 9).
2. Remove filter end cover screws using 5/16"
nut driver (see Figure 28 or 29).
3. Remove filter end cover and air filters.
14
Barb Fitting
110/115/155/165/200
Models
www.desatech.com
4. Remove pump plate screws using 5/16" nut-
driver.
5. Remove pump plate.
6. Remove rotor, insert, and blades (see Figure
28 or 29).
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 .076/.101 mm
(.003"/.004") if needed (see Figure 30).
Note: Rotate rotor one full turn to ensure the
gap is .076/.101 mm (.003"/.004") at tightest
position. Adjust if needed.
Insert
Rotor
Air Output Filter
Figure 28 - Rotor Location, 40/55/60/70
Models
Insert
Rotor
Air Output Filter
Filter End Cover
Figure 29 - Rotor Location, 110/115/155/
165/200 Models
Gap Adjusting Screw
Blade
Gap Adjusting Screw
Figure 30 - Gap Adjusting Screw Locations
Air Intake
Blade
Pump
Filter
Plate
Filter
End
Cover
Blade
Pump Plate
Air
Intake
Filter
.003"/.004"
(.076-.101 mm)
Gap Measured
With Feeler
Gauge
Rotor
114008-01A