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OM-491 Page 29
7-6. Servicing Fuel And Lubrication Systems
802 170-A / Ref. 802 168-A / Ref. 801 434
Y Stop engine and let cool.
Y After servicing, start engine
and check for fuel leaks.
Stop engine, tighten connec-
tions as necessary, and wipe
up spilled fuel.
1 Oil Filter
2 Oil Drain Hose And Valve
3 Oil Fill Cap
4 Fuel Line
5 Primary Fuel Filter (Fuel/
Water Separator)
6 Petcock
7 Secondary Fuel Filter
8 Fuel Tank Sludge Drain Valve
To change oil and filter:
Route oil drain hose and valve
through hole in base. See engine
manual and engine maintenance
label for oil/filter change in-
formation.
To drain water from fuel system:
Open primary fuel filter petcock and
drain water into metal container.
Close petcock when water-free fuel
flows.
To replace primary fuel filter:
Turn filter counterclockwise. Re-
move filter.
Fill new filter with fresh fuel. Apply
thin coat of fuel to gasket on new fil-
ter. Install new filter and turn clock-
wise. Bleed air from fuel system ac-
cording to engine manual.
Inspect fuel lines, 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 use screwdriver to open
sludge drain valve. Close valve
when done.
Close door.
5
6
3
1
Tools Needed:
7
4
8
2