Chapter 3 Fuel Injection Equipment
2. Bleeding and Checking Injection Timing
2. Bleeding and Checking
Injection
Timing
1 . Air
bleeding
in the
fuel
system (4LHA-HTE/HTZE/HTP/HTZP)
If the engine is operated when the fuel tank is empty, or
with
the fuel tank outlet cock
closed,
air is
sucked
into the fuel oil
system,
and the engine stops. When this happens,
vent the air as follows:
(1) Add fuel to the fuel tank.
(2)
Loosen
the air-vent screw on the fuel oil
filter,
and push
the fuel feed pump priming lever
several
times.
When
no air is observed in the fuel, tighten the air-vent
screw
firmly.
t4LHA Series
(3)
Loosen
the
hexagonal
bolt
on
the
fuel
pump.
Push
the fuel
feed
pump priming lever to vent the air. After venting the
air, firmly tighten the
hexagonal
bolt.
F.O.
feed pump
priming lever
_
1
I F.O. feed pump
3-1-2
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