Fig.
4A
-
21
Fig.
4A-22
4A
4A-
A-5
. Au
to
matic choke
a. Checking au
toma
t
ic
choke
I. Before starting engine, fully depress accelerator
pedal
to
ensure
that
choke valve closes properly.
2. Push choke valve with a finger, and check for binding.
3. Check
to
be sure
that
bi-metal cover index
mar
k
is
set at the center
of
choke housing index mark as
shown in the figure.
Note:
Do
not
se
t bi-metal cover index mark
at
any position
except the cent
er
of
choke hous
in
g index mark.
4. Check automatic choke heater source wiring for
proper connection, then start engine.
5. After warming up the engine,
see
that
choke valve
is
fully open.
6.
If
automatic choke heater source wiring is normal and
choke valve does not operate after warm-up, replace
bi-metal cover.
b. Adjusting au
tomat
ic c
ho
ke
Fast idle cam
l.
Close the choke valve fully.
2. Confirm the position
of
fast idle cam.
It
should be
on
the fust position.
3. Adjust the
throttle
valve opening angle or clearance
(G)
by
turning the adjust screw.
(Turning the screw clockwise, the opening angle
becomes large)
Clearance (G
):
1.0 ±
0.1
mm (0.039 ± 0.004 in)
c. Check throttle valve opening angle
I.
Confirm the fast idle cam adjustme
nt
has been
made properly.
2. Place the fast idle cam select arm on the second
position.
3. Adjust the choke valve opening angle
or
clearance
(R)
by
bending the starting arm
@.
If
large adjust-
ment
is
required, the choke rod should be
be
nt.
Choke v
al
ve
opening angle: 10° ± 2°
Cl
earance (R):
0.75~:~g
mm
(
0.030
.::
8
:
88~
in
)
4A : 6
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