Chapter 3 Fuel Injection Equipment
1. Fuel Supply System
4LHA Series
(4H2W3)
Operation
of
cancel
knob
1
Since
the boost compensator
is the
device
that
limits
the
fuel injection amount
for
starting
the
engine
in
cold tem-
peratures (below -5°C),
it is
necessary
to cancel the func-
tion
of
the boost compensator and increase the fuel injec-
tion
amount.
I If
the engine is gard to start in cold temperatures, start
the
engine by pulling the cancel knob (cold start knob).
3
Once
the
engine
is
started, push
the
knob back
into
re-
sume the function of the boost compensator.
4M2M4)
Adjustment
of
boost
compensator
The initial rack
of the
boost compensator has been
ad-
justed properly
at
the time
of
shipment. However,
the
ac-
celeration
can be
increased
at the
request
of the
cus-
tomer. Watch
the
color
of the
exhaust while making
the
adjustment.
Adjust bolt
Procedure>
iemove
the
cap
nut of
adjust bolt
with
the
blade-type screw
river.
Right
turn
Large
effect
on
boost comp.
• Higher acceleration
• More black exhaust
Left
tum
Small
effect
on
boost comp.
• Lower acceleration
•
Less
black exhaust
3-2-10
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