Filter
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106068
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 5).
Allow motor to reach full speed.
4. Adjust pressure to 6.0 PSI. Turn relief
valve to right to increase pressure. Turn
relief valve to left to decrease pressure.
5. Stop heater. Remove pressure gauge.
Replace pressure gauge plug in filter
end cover.
Pressure
Gauge
Plug
Figure 8 - Pressure Gauge Plug Removal
FUEL FILTER
1. Remove side cover screws using 5/16"
nut-driver.
2. Remove side cover.
3. Pull lower fuel line off the fuel valve
fitting.
4. Carefully pry bushing, lower fuel line,
and fuel filter out of fuel tank.
5. Wash fuel filter with clean fuel and re-
place in tank.
6. Attach lower fuel line to fuel valve fitting.
7. Replace side cover.
Figure 9 - Adjusting Pump Pressure
Side Cover
Bushing, Lower Fuel
Line, and Fuel Filter
Figure 10 - Fuel Filter Removal
FUEL VALVE
1. Remove side cover (see Figure 10), fan
guard, and upper shell (see Figure 5,
page 8) screws using 5/16" nut-driver.
2. Remove fan (see Fan, page 8).
3. Pull lower fuel line off the fuel valve
fitting (see Figure 11).
Fuel Valve
Fitting
Relief Valve
Pressure
Gauge
SERVICE
PROCEDURES
Continued
WARNING: High Voltage
Figure 11 - Fuel Valve Replacement
Lower Fuel Line
Electrical Wires
Fuel Valve
Valve
Fittings
Bracket
Screw
Screw
4. Disconnect red and white wires from
fuel valve (see Figure 11).
5. Using 1/4" nut driver remove 2 screws/
lockwashers holding fuel valve and
bracket to lower shell (see Figure 11).
Save these screws/lockwashers.
6. Using 1/4" nut driver remove 2 screws
holding fuel valve to bracket. Save these
screws.
7. Attach new fuel valve to bracket with
2 screws.
8. Install new fuel valve and bracket on
lower shell with 2 screws/lockwashers.
9. Connect red and white wires (polarity
not important). Connect upper and
lower fuel lines to fuel valve. See Fig-
ure 11.
10. Replace fan, fan guard, upper shell, and
side cover.
Continued
Lockwasher