Subaru 1600 Service Manual page 71

ENGINE
1)
For 49 States (except 4WO & 4WO-A
T)
and California
Perform the engine idle mixture adjustment according to the following diagram.
Does the poin ler ()
normally?
(ie. Is duty ratio
t:(
f duty meter swing
lntrolled'!)
No
ithin 2,000 - 3,000
Keep engine speed
\II
rpm for
2 - 3
minu res.
~~
f duty meier swing
Yes
Yes
G.
()e~
the
~~~ter
0
normally? f - -
(ie.
Is
duty ratio c ontrolJed?)
N n
See Troubleshooting in Chapter
5.
NOTE:
B.
Perform the above adjustment on
both main and slow duty solenoid
valve by using check terminal.
b. Adjustment method by using dwell
meter is as follows.
(1) Set the range switch to 'four
cycle - four cylinde(.
(2) Adjust the idle adjusting screw
so that the needle points out
according to the following cal-
culation.
90
Dwell (deg)
= -
x Duty
(%)
100
*
N
Z=
*
Idling speed
=
N
No
Duty ratio Z
Yes
I End
(
700
±
100 rpm (MT)
800
±
100 rpm (AT)
Standard value
, adjusting
**
~
J
Adjust duty ratio.
1
No
See Troubleshooting
in Chapter
5.
Vehicle with
HITACHI carburetor
Duty ratio'"
Z
l
[
r::J /
deg)1
3S%
l31 .S
f--l--;tl(' /']
deg)~
I
SO m 1,600 m
{164 hI (S.2S0
ft)
(
Z
is determined according to )
the altitude.
,
±5% (±4.5 deg)
Idling speed
=
N
Duty ratio
=
Z
Yes
Warm up engine by
driving around for
10
minutes.
t
Confirm
JdUng speed .. N
Duty ratio" Z
Yes
End
Vehicle with
CoW carburetor
~
Z'" 35% (31.5 deg)
(
Z
is constant )
regardless of the
altitude.
Allowan~ ~-----+-----------------------------~--------~
At
checking
:1:20% (t18 deg)
*"
Adjust idle adjusting screw so that duty meter indicates 35
±
10%.
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