ADJUSTMENT AND OPERATION
13-6
1.5 Bleeding fuel system
:$51,1*
Completely wipe off any spilled fuel from air vent plug
with a cloth, as spilled fuel can cause a fire.
Bleeding of the fuel system must be started from the place
closest to the fuel tank: the fuel filter the first and the fuel
injection pump the last.
1.5.1 Bleeding air from fuel filter
(1) Cartrige type paper element
Loosen the air vent screw marked by the letter "1."
Tighten the air vent screw when fuel does not show air
bubbles.
Loosen the air vent screw marked by the letter "2."
Tighten the air vent screw when fuel does not show air
bubbles.
Note: Place the starter key in the ON position for the fuel
pump type.
When the fuel supply is gravity type, fuel will flow
into the filter by itself.
(2) Cock type paper element
Place the fuel filter cock lever in the OPEN position
and push the button several times to bleed the filter.
Note: When the fuel supply is gravity type, fuel will drop by
itself, and when the fuel supply is the pump type, fuel
and air in the filter will flow out with the starter key
positioned ON.
Bleeding air from fuel filter (cartridge type)
Bleeding air from fuel filter (switch cock type)
1.5.2 Bleeding air from fuel injection pump
Loosen the air vent screw of pump to discharge air in the
fuel pipe and fuel injection pump.
Note: Air in the fuel injection pipe and fuel injection nozzle
is automatically discharged by cranking of the engine.
Bleeding air from fuel injection pump
Loosen air vent
screws in numerical
order to bleed air
Air vent screw
1
2
'
0
㐿
Cock lever
(open)
Press the push
button several
times.
Air vent screw
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