Desa B50H - Manual (Page 9)

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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 5).
Allow motor to reach full speed.
4. Using a flat blade screwdriver, set
the pressure to 3.6 PSI. Turn relief
valve to right to increase the
pressure. Turn relief valve to left to
decrease the pressure.
5. Remove pressure gauge. Replace
pressure gauge plug in filter end
cover.
Figure 6 - Pressure Gauge Plug Removal
Relief
Valve
Pressure
Gauge
Plug
Figure 7 - Adjusting Pump Pressure
Pressure
Gauge
Fuel Filter
1. Remove 4 side cover screws using
5/16" nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter
neck.
4. Carefully pry bushing and fuel
filter out of fuel tank.
5. Wash fuel filter with clean fuel and
replace in tank.
6. Attach upper fuel line to fuel filter
neck.
7. Replace side cover.
Fuel Filter
Side Cover
Upper Fuel Line
Figure 8 - Fuel Filter Removal