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Mitsubishi 4DQ50 - Engine Starting

Mitsubishi 4DQ50
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3. ENGINE STARTING
Model
40050
engine
is
equipped with either of push button
or
key type starting
switches.
In
push button type switch, a press
on
button
"H"
keeps it on until another press
on button
"5"
makes it pop
out
automatically.
1) Put key into starting switch.
2)
Press button
"H"
(or turn key counterclockwise)
to
make glow plugs red hot.
Pre-heating time depends upon air and engine temperatures.
In
any case, pre-heat
until
glow plug indicator becomes red hot. Usually some 25 seconds pre-heating
will
make it red hot. If it gets red
hot
too
early or too late, check glow plugs, for
that
is
an evidence
of
one
or
more
of
them breaking.
Fig. 1-4 Push
button
type
starting switch
Starter switch
2 Glow plug indicator
3 Engine stop
button
Fig.1-5 Key
type
starting switch
3) Then, press button
"5"
(or turn key clockwise)
to
switch on starter. When the
engine
is
very cold, pull stop lever
at
the same
in
opposite direction
to
position
"stop",
and an increase of injection
will
make starting easier.
In
this case, pull
it
back
to
"neutral" as soon
as
first firing.
Keep
starter running until the engine has completely caught
to
run with a steady
rise
of
speed,
but
never any longer than
30
seconds
at
a time.
If
starting has failed,
don't
switch on starter again before both starter and engine
come
to
a dead stop and starter cools down.
While
the engine
is
running,
don't
try
to
increase injection nor switch on starter.
Note: According
to
specifications,
Model
400
Engine
is
equipped with a governor
that
has a built-in automatic device
to
increase injection.
In
pneumatic
governor use, prior
to
starting, place stop lever once
in
position
"stop"
and pull
back
to
"neutral"
to
assure a quick increase of injection. Particularly
attempt
-4-

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