Pump Pressure Adjustment; Fuel Filter - Desa 50 Owner's Manual

Pump Pressure
Adjustment
1. Remove pressure gauge plug from
filter end cover.
2. Install accessory pressure gauge
(part number HA1180).
3. Start heater (see Operation, page 8).
Allow motor to reach full speed.
4. Adjust pressure. Turn relief valve to
right to increase pressure. Turn
relief valve to left to decrease
pressure. See specifications at right
for correct pressure for each model.
5. Remove pressure gauge. Replace
pressure gauge plug in filter end
cover.

Fuel Filter

1. Remove side cover screws using
5/16" nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter
neck (see Figure 15).
4. Carefully pry bushing, fuel filter,
and lower fuel line (100/150
models only) out of fuel tank (see
Figure 16).
5. Wash fuel filter with clean fuel and
replace in tank.
6. Attach upper fuel line to fuel filter
neck.
7. Replace side cover.
099618
Pressure
Gauge
Plug
Figure 13 - Pressure Gauge Plug Removal
Pump
Model Pressure
35 3 PSI
50 3.6 PSI
70 4 PSI
100 4 PSI
150 5 PSI
Fuel Filter
Side Cover
Upper Fuel Line
Figure 15 - Fuel Filter Removal, 35/50/70 Models
Fuel Filter, Bushing,
and Lower Fuel Line
Side Cover
Figure 16 - Fuel Filter Removal, 100/150 Models
(35/50/70 Models Shown)
Relief
Valve
Pressure
Gauge
Figure 14 - Adjusting Pump Pressure
35/70 FUEL FILTER REMOVAL
PFA/P 037A
Upper
Fuel
Line
13