13PERIODIC SERVICE
ENGLISH
A Be sure to use a strainer when filling the fuel tank, or
dirt or sand in the fuel may cause trouble in the fuel
injection pump.
A For fuel, always use diesel fuel. You are required not
to use alternative fuel, because its quality is unknown
or it may be inferior in quality. Kerosene, which is very
low in cetane rating, adversely affects the engine.
Diesel fuel differs in grades depending on the
temperature.
A Be careful not to let the fuel tank become empty, or air
can enter the fuel system, necessitating bleeding
before next engine start.
BAir bleeding the fuel system
To avoid personal injury;
A Do not bleed a hot engine as this
could cause fuel to spill onto a hot
exhaust manifold creating a danger
of fire.
Air bleeding of the fuel system is required if;
A after the fuel filter and pipes have been detached and
refitted;
A after the fuel tank has become empty; or
A before the engine is to be used after a long storage.
[PROCEDURE ] (gravity feed fuel tanks only)
1. Fill the fuel tank to the fullest extent. Open the fuel
filter lever.
2. Open the air vent cock on top of the fuel injection
pump.
3. Turn the engine, continue it for about 10 seconds,
then stop it, or move the fuel feed pump lever by hand
(optional).
4. Close the air vent cock on top of the fuel injection
pump.
A Always keep the air vent cock on the fuel injection
pump closed except when air is vented, or it may
cause the engine to stop.
[GRAVITY FEED SYSTEM]
[PROCEDURE ] (fuel tanks lower than injection
pump)
1. For fuel tanks that are lower than the injection pump.
The fuel system must be pressurized by the fuel
system electric fuel pump.
2. If an electric fuel pump is not used, you must manually
actuate the pump by lever to bleed.
3. The primary fuel filter must be on the pressure side of
the pump if the fuel tank is lower than the injection
pump.
4. To bleed, follow (2) through (4) above.
A Tighten air vent plug of the fuel injection pump except
when bleeding, or it may stop the engine suddenly.
[TANK BELOW INJECTION PUMP SYSTEM]
(1) Air vent cock
(2) Fuel feed pump
(1) Fuel tank below injection pump
(2) Pre-filter
(3) Electric or Mechanical pump
(4) Main Filter
(5) Injection pump
E.book 13 ページ ２００９年４月２３日 木曜日 午前１０時３１分
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