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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
FUEL SYSTEM PRIMING
ENGLISH
MAINTENANCE
MAINTENANCE
51 FUEL SYSTEM PRIMING
51.1 Engine with fuel filter with
[AIR] valve
1. Move the fuel filter valve lever to AIR position.
2. Move the lever to ON position when the fuel flows
free of bubbles from the overflow pipe.
3. To prime the fuel pipe and fuel injection pump,
loosen the air vent screw of the injection pump.
4. The injection pipes and nozzles can be primed by
cranking the engine.
5.
51.2 Engine with cartridge (air vent
screw) type fuel filter
1. Loosen air vent screw (1). Tighten screw (1) when
the fuel flows free of bubbles from this vent.
2. Loosen air vent screw (2). Tighten screw (2) when
the fuel flows free of bubbles from this vent.
3. The injection pipes and nozzles can be primed by
cranking engine engine.
Figure 266 Priming fuel filter with [AIR] valve
[OFF]
[ON]
Overflow pipe
[AIR]
NOTE
The fuel system of the engine with an electric fuel
pump can be primed by turning the starter switch key
to ON position.
Figure 267 Priming cartridge (air vent screw) type fuel
filter
OPEN position
Valve lever
NOTE
Turn the valve lever to OPEN position (if equipped)
before loosening any air vent screw.
The fuel system of the engine with an electric fuel
pump can be primed by turning the starter switch key
to ON position.
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