DATSUN 210 1979 Owners Manual

Engine
Fuel

S
Idle

compensator
is
ill

good
order

if
a

hissing
sound
is

heard
when
its

temperature
reaches

operating
tern

perature

If
not

replace
idle

compensator
ldlerompensator
l
b
l

r
I

No
1
60
to
700C

140
to
15

Of

No
2
70

to
800C

158
to
1760F

FUEL
FILTER

DESCRIPTION

t
t

I

J
i

l
The
fuel
filter
is
a

cartridge
type
It

useS
a

paper
element

1
Body

2

Paper
element

3
Cover
EFOOS

Fig
EF

14
Sectional
View
of
Cartridge

Type
FuelFilte

FUEL
PUMP

t

j
f

EC132

Fig
EF
15
Schematic
View

of
Fuel

Pump

EF
6
OPERATING
TEST

Note
When

disconnecting
fuel
hoses

me
a

container
to
receive
fuel

remaining
in
fuel
hoses

STATIC
PRESSURE
TEST

The
static

pressure
test
should
be

conducted

as
follows

I
Disconnect
fuel
hose

between
car

buretor
and
fuel

pump

2
Connect
a
rubber
hose
to
each

open
end
of
aT
connector
and
con

nect
this
connector
hose

assembly
be

tween
carburetor
and
fuel

pump

Note
Locate
this
T
eonnector

as

close
to
carburetor
as

possible

3

Connect
a
suitable

pressure
gauge

to

the

opening
of

T
connector
and

fasten
the
hose
between
carburetor

and
T

connector

secUrely
with
a

clip

4
Start
and
run
the

engine
at

various

speeds

5

The

pressure

gauge
indicates

static
fuel

pressure
in
the
line

The

gauge
reading
should
be
within
the

specified
value

Fuel

pump
pressure

0
21
to
0
27

kg
em2

3
0
to
3
8

pli
I

Note
If
the

fuel
in
the
carburetor

float
chamber
has

run
out
and

engine
has

stopped
remove

clip
and

pour
fuel
into

carburetor
Fasten

clip
securely
and

repeat
static

pres

sure
test

If

pressure
is
not
within
the

specifi

ed
limit
remove

pump
as
an

assembly

CAPACITY
TEST

The

capacity
test
is

conducted

only

when
static

pressure
is
within
the

specification
To

conduct
this

test

proceed
as
follows

1
Disconnect

pressure
gauge
from

T
connector
and
in
its
vacant

place

install

a
suitable

container

as
a
fuel

sump

2

Start

engine
and
run
at

1
000

pm

3

Pump
should
deliver
the

specified

amouni

of
fuel

If

little
or
no
fuel
flows
from

open

end
of

pipe
it
is

an
indication

that

fuel
line

is

clogged
or

pump
is

mal

functioning

Fuel

pump
capacity

450

cc
27
46

eu
inl
min

at
1
000

rpm

REMOVAL
AND

INSTALLATION

Note
When

disconnecting
fuel

lines

use
a

container
to
receive

fuel

remaining
in
fuel
hoses

I
Disconnect

inlet
and

outlet
fuel

hoses
from
fuel

pump

2
Remove

fuel

pump

3
To

install
reverse
the
order
of

removal
Engine
Fuel

DISASSEMBLY

@@

@@

@

@@

1

Remove
screws
and
detach

upper

and
lower
bodies

2

Remove
screws
and
take
off

cap

and

cap
gasket
from

upper
body

3

Remove
inlet

and
outlet

connee

tors

4
Remove
valve
retainer
screws
and

take

off
valve

retainer

S
To

remove
diaphragm

press

down
its
center

against
spring
force

With

diaphragm
pressed
down
ilt

it

until
end
of

pull
rod
touches
inner

wall
of

body
Then
release

diaphragm

to
unhook

push
rod

Note
Be

careful
not
to

damage
dia

phragm
or
oil

seal

INSPECTION

Check
all

components
for
cracks

EF
7
I

Packing

2
Valve
a5scm

bly

3
Retainer

4
Screw

5

Diaphragm
assembly

6

Diaphragm
spring

7
Retainer

8

Diaphragm
assembly

9

Complete
body
lower

10
Screw

11
Washer

spring

12
Fuel

pump
cap

13

Cap
gasket

14
Connector
inlet

15
Connector
outlet

16
Rocker

arm

spring

17
Nut

18

Washer

spring

19
Washer

pJain

20
Gasket

21

Spacer

22
Rocker

pin

23

Spacer

24
Rocker

arm

EC134

Fig
EF
16

Fuel

Pump

wear
or

any
abnormalities
and

replace

with
new

parts
if

necessary

ASSEMBLY

I
To
assemble

reverse
the
order
of

disassembly
Closely
observe
the

following
instructions

Use
new

gaskets

Lubricate
rocker
arm

rocker
arm

link

and
rocker
arm

pin
before

installation

2
After

assembly
test
the
function

as
follows

a

Position
fuel

pump
assembly
about

I

meter
3
3
ft

above
fuel

level
of

fuel
strainer
and

connect
a

pipe

from
strainer
to

fuel

pump

b

Operate
rocker
arm

by
hand
If
fuel

is

drawn

up
soon
after
rocker

arm
is

released
fuel

pump
is

functioning

properly

DESCRIPTION

The

carburetors
are

of
downdraft

two

barrel

type

designed
to
increase

ppwe
r
a
fu
l
eC

l
Il
Y
t

3
ell
a

to

reduce

exhaust

gas
emissions

These
carburetors

present
several

distinct
features
of

importance
to

car

owner

A

summary
of

features
is
as
fol

lows

1

Secondary
throttle
valve
is

oper

ated

by
throttle
lever

High
power
and

good
acceleration
are

gained
with
com

bination
of
the

auxiliary
valve

2

Accelerating

pump
provide
ex

cellent
acceleration

3
Power
valve
mechanism
is

a
vacuo

urn
actuated

boost

type
and

improves

high
speed
driving

4

The
throttle

opener
control

sys

tem

Except
FU
model

incorporates
a

servo

diaphragm
which

helps
open
the

throttle
valve
at

a

decreasing
speed
so

as
to

reduce

hydrocarbon
emissions

to

a
minimum

5
An
anti
d

eseling
solenoid

valve
is

installed
to

prevent
dieseling
When

ignition
key
is

turned
off
the

fuel

passage
involved
in
the
ow

system
is

closed
and
the
fuel

supply
is
shut

down

completely

The
solenoid
valve
also

serves
as
an

actuator
of
the
fuel

shut
off

system
on

the

FU
model

6
In
the
choke
mechanism
an

elec

trie
automatic

choke
is
used

to
auto

maticaDy
control
chok
valve

opera

tion

during
engin
war

up

7

The
carburetor
comes

equipped

with
dash

pot
which
ensures
smooth

deceleration
without

engine
stall
under

aU

operating
conditions

STRUCTURE
AND

OPERATION

These
carburetors
consist
of
a

main

system
for
normal

running
a
slow

system
for

idling
and

an

accelerating

and

power
mechanisIll

Some

emission
control
devices

are

added
E
ngine
Fuel

CARBURETOR

I

J

1

Primary
main

jet

2
Idle

adjust
screw

3
hUe
nozzle

4

By
pass
hole

5

Primary
throttle
valve

6

Primary
slow

jet

7

ptug

8

Primary
5l

w
air
bleed

9

Primary
main
air
bleed
10

Primary
air
vent

pipe

11

Primuy
main

nozzle

12

Choke
valve

13

Primary
small

venturi

14

Secondary
small

venturi

15

Secondary
air
vent

pipe

16

Secondary
main

nozzle

17

Secondary
main
air
bleed

18

Secondary
slow

air
bleed

1
Oloke
valve

2

Primary
air
vent

pipe

3
Prima
y
main
nozzle

4

Primary
slow

jet
19

Plug

20

Secondary
slow

jet

21

Needte

22
Fuel
fLlter

23

Secondary
tIuottle

valve

24

Auxiliary
valve

25

Secondary
main

jet

Note
Do
not
remo
the

parts
inarbd

with
anuteriak

EF416A

Fig
EF
17
Carburetor

PRIMARY

SYSTEM

PrlinarJ
main

sJstam

The
fUel

flowing
out
of
the

passages

at
bottom
of

float
chamber

passes

through
the

primary
main

jet
and
is

mixed
with
air

coming
from
main
air

bleed
The

gas
mixture
is

pulled
out

into
the

venturi

through
the
main

nozzle

When

throttle
valve
is
wide

open

and

engine
require
dense
mixture

gas

power
valve

opens
and
fuel
also
flows

into
main

system

EF044A

Fig
EF
18

PtJrlially

Loading

EF
8

t

1

Primary
main
nozzle

2

Primary
main
air
bleed

3
Primary
slow
air
bleed

4

Primary
slow

jet

5

Primary
main

jet

6
Idle
nozzle

7

Primary
throttle

valve

EF417A

Fig
EF
I9

Portially
Loading

IdUns
nd
slow

system

Passing
through
the
main

jet
the

fuel

passage
is

separated
from
main

line
fuel
flows

through
the
slow

jet

primary
slow
air
bleed
is

ejected
from

the

by

pass
hole
and
idle
nozzle

cp
v

Ii

l

1

Primary
main
air
bleed

2

Primary
slow
air

bleed

3
Anti
fieseling
solenoid
valve

4

Primary
main

jet

5
Idle
nozzle

6

Primary
throttle

valve

EF711

Fig
EF

20

Idling
and
Slow

System

Aceeler

tlns
meeh

nlsm

A

mechanical

accelerating

pump

synchronized
with
the
throttle
valve
is

used
Engine
Fuel

When
throttle
valve
is
closed

piston

rod

is

pushed

up
wi
th

linkage
which

pushes
up
piston
through
piston
return

spring

When

piston
comes
down
inlet

valve

closes
outlet
valve

opens
and

fuel
within
the

pump
is

blown
out

from
the

pump
je
t

by
compressed

piston
return

spring
The
fuel
hits

against
side
wall
of
small
venturi

becoming
minute

drops
and

compen

sating
transient

spareness
of

fuel

1

r

@
CD

V

1
Piston

2

Pump
lever

3

Pump
nozzle

4
Piston

return

spring
5
Inlet
valve
EF239

6
Outlet
valve

7

Primary
throttle
valve

8

Pump
connecting
rod

Fig
EF

21
Accelerating
Mechani
m

Power
v
lve
meeh
nlsm

The
vacuum
actuated
boost

type

power
va
v

mechanism
makes
use
of

the
downward

pulling
force
of
the

air

stream
below
throttle
valve

When

throttle
valve
is

slightly
open

ed

during
light
load

running
a

high

vacuum

p
ston

upward
against
the

spring
leaving

power
valve
closed

When
vacuum

is
lowered

during
full

load

or
acceleration
the

spring
pushes

vacuum

piston
downward

opening

power
valve
to

furnish
fuel

I

t
f

i

1
Vacuum

piston

2
Power
valve

EF240

Fig
EF

22
Power
Valve

EF
9
SECONDARY
SYSTEM

Second

ry
m

ln

system

When
the

primary
throttle
valve
is

wide

open
and

engine
produces
high

power
the

secondary
throttle
valve

begins
to

open
by
the

linkage

However

auxiliary
valve
does
not

open
at
a
slow

speed
due

to
counter

weight
connected
to
valve
shaft

As

engine
picks

up
speeds
the

auxiliary
valve

opens
against
the

load

of

counterweight
and

secondary
sys

em
starts

operation
for

high

power

operation
The
fuel

flowing
out
of
the

passage
at
bottom
of
float
chamt
er

passes
through
secondary
main

jet

The

fuel
is
mixed
wi
th

air

coming

from
main
air
bleed
and

mixture
is

blown
in
to
the
venturi

through
main

nozzle

When

primary
throttle
valve
is

in

full

open

position

secondary
throt

tle
valve
is

also

fully

opened

I

Secl
ndary
slow
air
bleed

2

Secondary
main

air
bleed

3

Secondary
main
nozzle

4

Primary
main
nozzle

5

Primary
main
air

bleed

6

Primary
slow
air

bleed

7

Primary
slow

jet

8
Primary
main

jet

9
Idle
nozzle

10

Primary
throttle
valve

11

Auxiliary
valve

12

Secondary
throttle
valve

13

Secondary
main

jet

14

Counterweight

15

Secondary
slow

jet

EF418A

Fig
EF

23
At
Full

Open
Stow

Speed

I

Secondary
slow
air

bleed

2

Secondary
main
air
bleed

3

Secondary
main
nozzle

4

Primary
main
nozzle

5

Primary
main

air
bleed

6

Primary
slow
air
bleed

7

Primary
slow

jet

8

Primary
main

jet

9
Idle
nozzle

10
Primary
throttle
valve

II

Auxiliary
valve

12
Seco
dary
throttle
valve

13

Secondary
main

jet

14

Counterweight

IS

Secondary
slow

jet

EF419A

Fig
EF
24
At
Full

Open
High
Speed
Engine
Fuel

Secondary
slow

system

Step
system

The
construction
of
this

system

corresponds
to

the

idling
and
slow

system
of
the

primary
system

This

system
aims

at
the

power

filling
up
of
the

gap
when

fuel

supply

is
transferred
from

the

primary
system

to
the

secondary
system
The

stepport

is
located

near
the

auxiliary
valve
in
its

fully
closed
state

ANTI

DIESELING
SYSTEM

The

carburetor
is

equipped
with
an

anti
liese1i

lg
solenoid

valye

As
the

ignition
switch
is

turned
off

the
valve
is

brought
into

operation

shutting
off
the

supply
of

fuel
to

the

slow
circuit

The

following
figure
shows
a
see

tional
view

of
this

control

An

ti
dies

eling
solenoid
valve

Ignition
switch
OFF

ON

t

L
li

FLOAT
SYSTEM

There
is

only
one
float
chamber

while
two
carburetor

systems

primary

and

secondary
are

provided

Fuel
fed
from
the
fuel

pump
flows

through
the
filter
and
needle
valve
into

the
float

chamber
A
constant
fuel

level
is
maintained

by
the

float
and

needle
valve

Because
of

the
inner
air

vent

type

float

chamber
ventilation
fuel
con

sumption
is

not
affected

by
dirt
ac

cumulated
in

the
air
cleaner
Ignition
switch

Q

1

T
Battery

niT

EC
3

Fig
EF
25

Anti
dieseling
Solenoid
Valve

The
needle
valve
includes

special

hard

steel
ball
and
wiD

not
wear
for
all

its

considerably

long
use

Besides
the
insertion
of

a

spring

will

prevent
the

flooding
at

rough
road

running

THROTTLE
OPENER

CONTROL
SYSTEM

T
O
C
S

Except
FU

model

The
function

of
the
throttle

opener

is
to

open
the

throttle
valve
of
the

carburetor

slightly
while
the
car
is
in

EF
10
deceleration

During
deceleration

the

manifold
vacuum
rises
and

the

quan

tity
of
mixture
in
the

engine
is

not

suffICient
for
normal

combustion
to

continue

4
consequently
a

great

amount
of

unburned
HC
is
emitted

Carburetors

equipped
with

the

throttle

opener
supply
the

engine
with

an

adequate
charge
of

combustible

mixture
to
maintain

proper
combus

tion

during
deceleration

resulting
in
a

dramatic
reduction
in
HC

emission

The

system
for
the

manual
trans

mission
model
consists
of

servo
dia

phragm
vlicuum

control
valve
throttle

opener
solenoid
valve

spee
l

detecting

switch
and

amplifier
On

the
auto

matic

transmission
model
an
inhibitor

and
inhibitor

relay
are
used
in

place
of

speed

detecting
switch
and

amplifier

on
the
manual
transmission

model
An

altitude

corrector
fitted
to
vacuum

control
valve

serves
to

automatically

regulate
the

operating
pressure
in

the

system
with

variation
of

atmospheric

pressure

T
o
C
S
n

operatIon

At
the

moment

when
the

manifold

vacuum
increases
as

occurs

upon
de

celeration

the
vacuum

control
valve

opens
to
transfer

the
manifold

vacuum

to
the
servo

diaphragm
chamber
and

the
throttle
valve
of
the

carburetor

opens

slightly

Under
this

condition
a

proper

amount

of
fresh
air

is
sucked

into
the

combustion
chamber
As
the
result

complete
combustion
of
fuel
is

as

sisted

by
this
additional
air

and
the

amount

of
H
C

contained
in

exhaust

gases
is

dramatically
reduced

Throttle

Clpener
sol
nold

valve

operation

Manual

transmission
models

The
throttle

opener
solenoid
valve

is
controlled

by
a

speed

detecting

switch
which
is

actuated

by
the

speed

ometer
needle

As
the

car

sp
ed
falls
below
16

km
h
10
MPH

this
switch
is
acti

vated

producing
a

signal

The

signal
is

led
to
the

amplifier
so

that
the

signal
can
be

amplified
to

a

degree

large
enough
to
actuate
the

throttle

opener
solenoid
valve

The
throttle

opener
solenoid
valve

is

actuated
and
the

servo
diaphragm

chamber
is

opened
to
the

atmosphere

In
this
case

the
seIVo

diaphragm

does

not

opera
te
Engine
Fuel

Automatic
transmission
models

As

long
as
the

shift
lever
is
in
the

N

or
p

position
the
inhibitor

switch
on
the
transmission
is
turned

on
and
the

throttle

opener
solenoid

valve
is

actuated
Under
this
condition
the
seIVo

diaphragm
does
not

operate

because
of

the
same
reason
as
men

tioned
for
the

manual

transmission

model

ON
Car

peed
betow

t6
km
h

to

mph

OFF
Car

peed
above
16
km
h

to
mph

To
intake

manifold

j

lJl
11
1

ti

i
ljn

L

o

1

Servo

diaphragm

2

Vacuum
control
valve

3
Altitude

corrector

4
Throttle

opener
solenoid
valve

5

Inhibitor
switch
N
p

ON
for
automatic

transmission

6

Speed
detecting
switch
below

10
MPH

ON
for
manual

transmission

7

Amplifier

8

Ignition
switch

9

Primary
throttle
valve
Note

FUEL

SHUT
OFF
SYSTEM

The

fuel
shut
off

system
is

to
shut

off

the
fuel

during
deceleration

there

by

reducing
fuel

consumption
This

system
also

helps
prevent
a

tempera

ture
rise
in
the

catalytic
converter

during
long
periods
of

deceleration

The

major
parts
of
the

system
are

an
anti

dieseling
solenoid
a
neutral

detecting
switch
a

throttle
valve

switch
and

an

engine
revolution

switch
e

1

l
6

I

I

I

I

I
I

I
I

I

l

L
I

Broken
tine

applies
only
to
Automatic

Transmission
7

Anti
dieseling
solenoid

Electric
current

OFF
ON
valve

I

I

h

L

Battery

I

Neutral

detecting
switch

l

2

Throttle

valve
switch

3

Engine
revolution
switch

4

Transistor

ignition
unit
o

Ignition
switch
EF105A

Fig
EF
26
Throttle

Opener
System

ill

Ignition
coil

U
EF846

Fig
EF

27
Anti
dieseling

Solenoid
Valve

EF
11

Fuel
shut
oH

s
stein

operation

During
deceleration
when

the
en

gine

speed
is

above
a
certain
level
the

anti
dieseling
solenoid
valve
of
the

carburetor
closes
so
that
the
fuel
is

shut
off
When

engine
speed
falls

below

a
certain
level
the
anti

dieseling

solenoid
vaJv

oP
lS
so
that

the

f
el

flows
However

if
the

engine
speed
is

below
the

designated
level

even

during

deceleration
the
fuel

shut
off

system

does
not

operate
When
the
shift
lever

is
in
neutral

the
fuel

shut
off

system

does
not

operate

The

functions
of
each

part
of
this

system
are
as
follows

I

Engine
revolution
switch

The

engine
revolution

switch
turns

off
when

the

engine
revolution
is

above
2

100

rpm
and
turns

on
when

the

engine
revolution
falls
below
1

650

rpm
This
switch
is

actuated

hy
a

pulse

of

the

ignition
system

This
switch
is

located
on
the

right

hand

dash
side

panel
in
the

passenger

compartment
as
shown
in
the
follow

ing
figure
Engine
Fuel

I

Fig
EF
28
Location

of

Engine

Revolution
Switch

2

Neutral

detecting
switch

The
neutral

detecting
switch
turns

on
in

neutral
and
turns
off
in

other

shift

lever

positions

h

1

Neutral

detecting
switch

2

Revenelamp
switch

3

Top

detectim
switch
EC275
3
Throttle
valve

switch

The

throttle
valve

switch
is

installed

on

the
carburetor
It

turns
off
when

the

throttle
valve
is
closed

and
turns

on
when
the
throttle

valve
is

open

The

opening
position
of
the

throt

tle
valve

switch
is
calibrated
in

engine

rpm
when
the

engine
is
revved

up

under

no
load

The

switch
turns
on
when

the

engine
revolution
is

above
1

150

rpm

and

turns
off
when
the

engine
revolu

tion
is

below
1

000

rpm

1
Micro
switch

2

Connector

3

Adjusting
screw

EF848

Fig
EF
30
Location

of
Throttle

Valve
Switch

Fuel
shut
off
Anti

dieseling

Engine
revolution
Throttle
valve

opening
Shift
lever

position

system
solenoid
valve

Activated

Closed

Except
neutral
OFF

Closed
OFF

Neutral

ON

High
OFF

Except
neutral
OFF

Open
ON

Inactivated

Open
Neutral
ON

Closed
OFF
Excep
t
neutral
O
F

Low
ON
Neutral
ON

Except
neutral
OFF

Open
ON

Neutral
ON

Continuity
of
switch
Fig
EF
29
Locotion

of
Neutral

Detecting
Switch

EF
12

ELECTRIC
AUTOMATIC

CHOKE

An
electric
heater
warms
a
bi
metal

interconnected
to
the
choke
valve
and

controls
the

position
of
c
oke

valve

and
throttle
valve
in
accordance

with

the

time

elapsed
the
warm

up
condi

tion
of
the

engine
and
the
outside

ambient

temperature

Electric
heater

The
electric

heater
is
made

up
of

a

semiconductor
and

installed
in

the

automatic
choke
cover
in

the

body

2
Bi
metal

Electric
current

flows

through
the

heater

as
the

engine
starts
and
warms

the
bi
metal
The

deflection
of
the

bi

metal
is

transmitted
to
the
choke

valve

through
the

choke
valve
lever

3

Fast
idle
cam

The

fast
idle

cam
determines
the

opening
of
the

throttle
valve

SQ
that

the

proper
amount

of
mixture

cor

responding
to
the

opening
of
the

choke
valve
will
be

obtained
The

opening
of
the

choke
valve
is
de

pendent

upon
the
warm

up
condition

of

the

engine

4
Choke
unloader

When

accelerating
the

engine
during

the

warm

up
period
that
is

before
the

choke
valve

opens
sufficiently
this

unloader
forces
the

choke
valve

open
a

little

so
as
to
obtain
an

adequate

air
fuel
mixture

S

Vacuum
break

diaphragm

After
the

engine
has
been
started

by
cranking
this

diaphragm
forces
the

choke
valve

open
to
the

predetermined

extent
so
as
to

provide
the

proper

air
fuel
ratio

A
two

stage
acting
type
vacuum

diaphragm
is

employed

6
Si
metal

case
index
mark

The
bi
metal
case
index
mark
is

used
for

selling
the
moment
of
the

bi
metal
which
controls
the
air

fuel

mixture
ratio

required
for

starting
Engine
Fuel

r
m

2

3

4

5

6
r
3

1

@
@
Alternator
L

terminal

Automatic

choke

relay

Automatic
choke

cover

P
T
C
heater

Bi

metaJ

spring

Choke
valve

Fig
EF
31
Electric
Automatic
Choke

l
eater
EF045A

l

A

Higher
ambient
temperature

Manifold

vacuum
Clearance
B

B
Lower
ambient

temperature
Clearance

Manifold

vacuum
1
Hi
metal

2
P
T
e
heater

3
Thermostat
cover

4
Vacuum

diaphragm

5
Fast
idle

earn

6
Bi
metal
cover

index
mark

7
Choke
shaft
lever

8
Choke
valve

9
Unloader

tang

10
Throttle
valve

11
Fast

idle

adjusting
screw

EF243

t

Diaphragm

2

Spring
I

3

Spring
11

4
Rod

5
Choke
valve

6
Plate

@
7
Bi
metal

EF884

Fig
EF

32
Electric
Automatic
Choke

EF

13

DASH
POT
SYSTEM

These

carburetors
are

equipped

with
a
dash

pot
interlocked
with
the

primary
thrott
Ie
valve

through
a

link

mechanism

The
dash

pot
prevents
the

throttle

valve

from

closing
abruptly
thereby

reducing
He
emissions

during
deceleia

tion
or

gear
shifting

In
automatic

transmissi9fi
models

it

also

prevents
engine
stall

resulting

from

quick
application
of
the
brake
or

from

quick
release
of
the

accelerator

pedal
after
it
s
been
tread

upon

slightly

INSPECTION

AND

ADJUSTMENT

CARBURETOR
IDLE
R
P
M

AND
MIXTURE
RATIO

CO
idle
adjustment
with

CO
meter

Refer
to
Carburetor
Idle

rpm
and

Mixture
Ratio
Section
ET
for
check

ing
and
a

justment

CO
idle

adjustment
without

CO
meter

Non
California
models

Refer
to

Carburetor
Idle

rpm
and

Mixture
Ratio
Section

ETl
fot
check

ing
and

adjustment

Idle

limiter

cap

Refer
to
Idle

Limiter

Cap

SeCtio

ET
for

checking
and

adjustment

FUEL

LEVEL

I

With

engine
idling

visually
check

fuel
level

through
sight
window
of

float
chamber

Fuel
level
is
correct

if
it

is
at
the

indicator

point

Note

Fuel
level
indicator

point
is

located
IS
mm
0
59
in
below

top

of
carburetor

body
H

as
shown
in

Figure
below
Engine
Fuel

EF088A

Fig
EF
33

Checking
Fuel
Level

To

adjust
fuel
level

proceed
as

follows

2

Remove
choke

chamber

3

Turn
down

choke
chamber

to

allow

float
to

come
into
contact
with

needle

valve
and

measure
H

shown

below

When
H

is

approximately
15
mm

0
59
in

top
float

position
is
correct

The

top
float

position
can
be
ad

justed
by
bending
float
seat

Upon

completion
of
the

adjust

ment

check
fuel

level
with

attached

level

gauge

nhH

J

1
Float

2
Float

stopper
3
Float

seat

4
Needle
valve

Fig
EF
34

Adjusting
Floot
Level

EF

14
4

Adjust
bottom
float

position
so

that
clearance

hl
between

float

seat

and
needle

valve
stem
is
1
3
to
I
7
mm

0
051
to
0
067
in
when

float
is

fully

raised
Bend
float

stopper
as

required

5

Install
choke
chamber

6
After

adjustments
in

steps
3
and

4
above
have
been

made
make

sure

that
when
fuel
is
delivered
to
the

float

chamber
the

fuel
level

is
maintained

within
the

specified
value

H

FAST

IDLE

I
Remove
carburetor

assembly

from

engine

2
Remove

bi
metal
cover

3

Place
fast
idle
arm
on
second

step

of
first
idle
cam
Then

adjust
fast
idle

adjusting
screw
as
shown
at
A
in

illustration

The
clearance
A

should
be

specified
value
in
the

following
table

4

To
check
fast
idle
cam

setting
by

engine
speed
proceed
as
follows

Warm

up
engine
sufficiently
Set

fast
idle

cam
at
2nd

step
and
read

engine

speed

Fast
idle
cam
is

properly
set
if

engine
speed
is
within

above

specifica

Hons

VACUUM
BREAK

I
Close
choke

valve
completely

2
Hold
choke
valve

by
stretching

rubber
band
between
choke
shaft
lever

and

stationary

part
of

carburetor

3
Push
vacuum
break

stem
with

plie
and

puD
fully
straight

4
Under

this
condition

adjust
gap

shown
at
8
in

illustration
between

choke

valve
and
carburetor

body

Clearance
Bu

All
model

except
FU
model

1
80
to
1
98
mm

0
0709
to

0
0780
in

FU

model

1

98
to
2
16
mm

0
0780
to
0
0850

in
Engine
Fuel

Clearance
A

mm
in
Engine
speed

rpm

Manual
transmission
0
73

to
0
87

0
0287
to

0
0343

1

00
to
1
14

0
0394
to

0
0449
2

400
to
3
200
1
900
to
2

700

Automatic

transmission

Fast

idle
earn

steps

g
g
2
5
t

to
J

A
ti

Ogc
j
jdle
adjusting
screw

o

0

II
r

Throttle

chamber

EF098A

Fiil
EF
35

Adjusting
Fast
Idle

@
B

@

cv

Push

I

4

Choke
valve

5

Vacuum
break
stem

EF885
1
Rubber
band

2

Vacuum
break

stem

3
Vacuum
break
rod

E
F099A

Fig
EF
36

Adjwtirig
Vacuum
Break

EF
15