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OM-129 647 Page 30
7-4. Servicing Fuel And Lubrication Systems
Ref. ST-158 633-C / Ref. ST-180 933-B
Y Stop engine and let cool.
1 Oil Filter
2 Oil Drain Plug
3 Oil Drain Hose (Optional)
4 Oil Fill Cap
5 Primary Fuel Filter (Fuel/
Water Separator)
6 Petcock
7 Secondary Fuel Filter
8 Fuel Shutoff Valve
9 Fuel Line
10 Sludge Drain Plug
To change oil and filter:
See engine manual.
To drain water from fuel system:
Open primary fuel filter petcock
and drain water into metal contain-
er. Close petcock when water-free
fuel flows.
To replace primary fuel filter:
Close shutoff valve and turn filter
counterclockwise. Remove filter.
Apply thin coat of fuel to gasket on
new filter. Install new filter and turn
clockwise. Open shutoff valve.
Bleed air from fuel system accord-
ing 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 con-
nections as necessary, and
wipe up spilled fuel.
Close doors.
3/8, 7/16, 3/4 in
5
10
6
8
7
9
2
1
4
Under Left Side
Of Fuel Tank
Valve Open
Tools Needed:
2
3