MQ Power WHISPERWATT DCA25SSIU4FC8 Operation Manual page 41

Fuel Filter Element Replacement
1. Using a filter wrench, remove the element case from
the fuel filter body (Figure 65).
Figure 65. Fuel Filter Replacement
2. Wipe the inside of the filter body (Figure 65) 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 lbf·ft (2.0 N·m).
8. Remove the air from the fuel system. Refer to Bleeding
the Fuel System in the Isuzu engine owner's manual.
DCA25SSIU4FC8 60 HZ GENERATOR • OPERATION MANUAL — REV. #0 (08/23/22) — PAGE 41
AIR BLEEDER
PLUG
FILTER BODY
ELEMENT
FLOAT
O-RING
ELEMENT
CASE
O-RING
DRAIN PLUG
ELECTROMAGNETIC FUEL PUMP (500 HOURS)
The filter inside the electromagnetic fuel pump (Figure 66)
is either a paper type or steel mesh type depending on the
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 gaskets (Figure 66) from the
fuel pump housing.
Figure 66. 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