7-4. Servicing Fuel And Lubrication Systems
OFF
RUN
START
3
2
1
6
4
5
Tools Needed:
7/16 in
YStop engine and let cool.
1Oil Filter
2Oil Drain Plug
3Secondary Fuel Filter
4Primary Fuel Filter/Water Separator
5Petcock
6Sludge 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
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.
YAfter servicing, start engine and check for fuel leaks.
YStop engine, tighten connec- tions as necessary, and wipe up spilled fuel.
Close doors.
Ref.