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When
throttle valve
is
opened
fur
ther
locking
arm
is
detached from
secondary
throttle
arm
permitting
see
ondary
system
to
start
operation
Linkage
between
primary
and
see
ondary
throttles will function
properly
if distance between throttle valve and
inner
wall of
throttle
chamber
is 74
mm
0
2 91
in
Adjustment
is
made
by
bending
connecting
link
I
L
l
1
4
CAl
Secondary
prm
ary
I
Jl
I
7 t
@
1
Roller
4
Adjust plate
2
Connecting
lever
5
Throttle
c
amber
3
Return
plate
6
Throttle
valve
Fig
EF 48
Adjusting
interlock
opening
DASH
POT
1
Idling speed
of
engine
and mix
ture
must
be
well
tuned
up
and
engine
sufficiently
warm
2
Turn throttle
valve
by
hand
and
read
engine speed
when
dash pot
just
touches
stopper lever
3
Adjust position
of dash pot
by
turning
nut
until
engine speed
is
in the
specified
range
Specified
engine
speed
Manual transmission
1
900
to
2
100
rpm
Automatic transmission
1
650
to
1
850
rpm
4
Tighten
lock
nuts
5
Make
sure
that
engine
speed
drops smoothly
from
2
000
to
1
000
rpm in
about
three
seconds
Engine
Fuel
Fig
EF
49
Adjusting
dash pot
ACCELERATING PUMP
I
Visually
inspect
accelerating
pump
cover
for
any
sign
of fuel leaks
2
If
fuel
leaks
are
found
check
gasket
and
replace
if
necessary
ANTI DIESELING
SOLENOID
VALVE
If
engine
does
not
stop
when
igni
tion switch
is turned
off this indicates
that
a
striking
closed
solenoid valve
is
shutting
off
supply
offuel
to
engine
If harness
is
in
good
condition
replace
solencid valve
as
a
unit
Notes
a
Tightening
torque
is
1 8
to
3 5
kg
m
13
to 25
ft Ib
b
After
replacement
star
engine
and
check
to
be
sure
that fuel is
not
leaking
and that
anti di e sel i n g
sol
noid
is in
good
condition
B C D D
CIRCUIT
WITH
FUNCTION
TEST
CONNECTOR
Caution
Do not
attach
test
leads of
a
circuit
tester to
those other than
designated
Refer
to
Figure
EF
50
Menuel trensmlsslon models
I
Check
for
continuity
between A
and
B when
vehicle
is
brought
to
a
complete
stop Refer
to
Figure
EF 50
B C
D
D
circuit
is
functioning
properly
if
continuity
exists
and volt
meter
reading
is
0
volt
d
c
in
step
2
below
If
continuity
does
not
exist
check
for
disconnected
connector
and
or
faulty
amplifier
speed
detecting
switch
or
B
C D
D
solenoid
valve
2
Check
for
presence of
voltage
across
A
and
B
at
a
speed
of
more
than 16
km
h
10
MPH
Refer
to
Figure
EF
50
Conduct
this test
by
one
of
the
following
two
methods
I Raising
up
rear
axle
housing
with
stand
2
Chassis
dynamometer
test
If voltmeter
reading
is 0
volt
at
a
speed
of
more
than 16 km
h
10
MPH
circuit is
functioning
prop
erly
If voltmeter
reading
is not 0 volt
check for disconnected
connector
burned
fuse
faulty
amplifier
B C D D
solenoid
valve
or
speed
detecting
switch
3
If
by
above checks
faulty
part
or
unit is
located
it
should
be
removed
and tested
again
If
necessary
replace
1
P4
11
0
8
l
1
Ignition Icey
2
Fuse
3
Amplifier
4
Speed detecting
switch
Above 10
mph
OFF
Below 10
mph
ON
5
Function
test connector
6
B
C D
D
solenoid
valve
EF711
Fig
EF 50
Checking
B C D D circuit with
function
test
connector
for
manual transmission
EF
25
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