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OM-481 Page 24
7-4. Servicing Fuel And Lubrication Systems
Ref. ST-153 653-A / Ref. SD-131 784
Y Stop engine and let cool.
1 Oil Filter
2 Oil Drain Plug
3 Secondary Fuel Filter
4 Primary Fuel Filter/Water
Separator
5 Petcock
6 Sludge Drain Plug
To change oil and filter:
See engine manual.
To drain water from fuel system:
Open petcock and drain water into
metal container. Close petcock
when water-free fuel flows.
To replace primary fuel filter/ wa-
ter separator:
Turn filter counterclockwise. Re-
move filter.
Apply thin coat of fuel to gasket on
new filter. Install new filter and turn
clockwise. Bleed air from fuel sys-
tem according to engine manual.
Inspect fuel line, and replace if
cracked or worn.
To replace secondary fuel filter:
See engine manual.
To drain sludge from fuel tank:
Put metal container under drain,
and remove sludge drain plug. Re-
install plug when done.
Y After servicing, start engine
and check for fuel leaks.
Y Stop engine, tighten connec-
tions as necessary, and wipe
up spilled fuel.
Close doors.
Tools Needed:
7/16 in
3
1
2
4
5
6
OFF
START
RUN