MQ Power WHISPERWATT DCA125SSIU4F Operation Manual page 50

FUEL FILTER ELEMENT REPLACEMENT
1. Use a filter wrench to remove the element case
(Figure 68) from the fuel filter body.
Figure 68. Fuel Filter Replacement
2. Wipe the inside of the filter body with a clean cloth to
remove any foreign matter or debris that may have
accumulated.
3. Insert the new fuel filter element into the element case.
4. Replace both O-rings. Coat each O-ring with a small
amount of clean 15W-40 engine oil.
5. Reinstall the element case first by hand until it makes
contact with the fuel filter body surface.
6. Torque the element case to 22.4 lbf . ft (30 N . m).
7. Torque the drain plug to 1.4 lb-ft (2.0 N . m).
8. Remove the air from the fuel system. Reference the
Isuzu Owner's Manual, "Bleeding the Fuel System."
PAGE 50 — DCA125SSIU4F 60 HZ GENERATOR • OPERATION MANUAL — REV. #6 (05/12/22)
AIR BLEEDER
PLUG
FILTER BODY
ELEMENT
FLOAT
O-RING
ELEMENT
CASE
O-RING
DRAIN PLUG
ELECTROMAGNETIC FUEL PUMP (500 HOURS)
The filter inside the fuel pump (Figure 69) is either a paper
type or steel mesh type depending on fuel pump type. Clean
or replace the fuel pump filter as follows:
1. Disconnect any electrical connections that are attached
to the fuel pump.
2. Prepare a fuel collector to drain the fuel into. Secure
any fuel lines to prevent fuel from spilling.
3. Remove the fuel pump from the generator enclosure.
4. Remove the filter and gasket from the fuel pump
housing.
Figure 69. Electromagnetic Fuel Pump
NOTICE
When the fuel pump filter is removed, always make sure
to replace both gaskets and clean the magnet portion
inside the cover.
5. Clean or replace the fuel pump filter. Replace both
gaskets.
6. Reassemble the fuel pump and mount it back onto the
generator enclosure.
7. Reconnect all fuel lines and electrical components.
8. Check for fuel leaks.
MAINTENANCE