1973 DATSUN B110 clock setting

EMISSION
CONTROL
AND

TUNE
UP

Checking
and

adjusting
dash

pot

automatic
transmission
model

only

Check

operation
of
dash

pot
It
should

not
be
cracked

or

bound
It

is
also
essential
to
check
to
be
certain

that
it

is
in

correct

adjustment

L
Check
to
be
sure
that
dash

pot
contacts

stopper
lever

when

engine
speed
reaches
1
900

to
2

000

rpm

2

Engine
should
be
slowed
down
from
3

000
to
1

000

rpm
within
a
few

seconds

Readjust
dash

pot
or

replace
it
with
a
new
one
if
it

fails

to
meet

the
above

conditions

Checking
carburetor
return

spring

Check
throttle
return

spring
for

sign
of

damage
wear

or

squareness
Discard

spring
if
found
with

any
of
above

excessively
beyond
use

Checking
choke
mechanism

choke
valve
and

linkage

1

Check
choke
valve
and

mechanism
for
free

operation

and
clean
or

replace
if

necessary

A

binding
condition

may
have

developed
from

petro

leum

gum
for
motion
on
choke
shaft
or

from

damage

2

Check
bimetal
cover

setting
position
The

index
mark

of
bimetal
cover
is

usually
aligned
at
the

middle

point
of

the
scale

Note
When
somewhat
over
choked
turn
bimetal

caver

clockwise

slightly

3
Prior
to

starting
check
to
be
sure
that

choke
valve

closes

automatically
when

pressing
down
on
accelerator

pedal

Should
it
fail
to
close

automatically
the
likelihood
is

that
fast
idle
cam
is
out
of

proper

adjustment
or

that

bimetal
is

not

properly
adjusted
calling
for

adjustment

Refer
to
Carburetor
in
Section
EF

Page
EF
15
Checking
anti

dieseling
solenoid

If

engine
will
not

stop
when

ignition
switch
is
turned

off

this
indicates

a

striking
closed
solenoid
valve

shutting
off

supply
of
fuel
to

engine
If
harness
is
in

good

condition

replace
solenoid
as
a
unit

To

replace
proceed
as
follows

Removal

and
installation

of
anti

dieseling
solenoid

Removal

Solenoid
is
cemented

at

factory
Use

special
tool

STl
91
50000
to
remove
a

solenoid

When

this
tool
is

not
effective
use
a

pair
of

pliers
to

loosen

body
out
of

position

lnstalltion

I
Before

installing
a
solenoid
it
is

essential
to
clean

all
threaded

parts
of
carburetor

and
solenoid

Supply

screws
in
holes
and
turn
them
in

two
or

three

pitches

2
First
without

disturbing
the
above

setting
coat
all

exposed
threads
with
adhensive
the

Stud
Lock
of

LOCTlTE
or

equivalent

Then

torque
screws
to
35
to
55

kg
cm
30

to
48
in

lb

using
a

special
tool
STl9150000

After

installing
anti

dieseling
solenoid
leave
the
carbu

retor
more
than
12

hours
without

operation

3

After

replacement
is
over
start

engine
and
check

to
be
sure
that
fuel
is
not

leaking
and
that
anti

dieseling
solenoid
is
in

good
condition

Notes
a
Do
not
allow
adhesive

getting
on
valve

Failure
to
follow
this
caution
would
result
in

improper
valve

performance
or
clogged
fuel

passage

b
I
n

installing
valve
use
caution
not
to
hold

body
directly
Instead

use

special
tool

tighten

ing
nuts
as

required

ET
9

ENGINE

Adjusting
throttle

opener
setting
engine
speed

1
Connect
servo

diaphragm
vacuum
hose

directly
to

intake
manifold

connector
without

laying
through

vacuum
control
valve

2
With

negative
pressure
vacuum
in

intake
manifold

servo
diaphragm

operates
and

thus
the

primary

throttle
valve

is

opened
When

servo

diaphragm
nor

mally
operates

engine
speed
rises

reaching
1
650

to

1

850

rpm
When

engine
speed
is

not
within
this

range

turn

adjusting
screw
as

necessary
See

Figure
ET
20

l
When

engine
speed
is
lower

than
the

prescribed

range
turn

adjusting
screw

clockwise

2
When

engine
speed
is

higher
than
the

prescribed

range
turn

adjusting
screw

counterclockwise

Upon
completion
of
the

adjustment
set

adjusting

screw
lock
nut

secwely
making
sure
that

engine
speed

is
in

the

prescribed

range

@
II
I
AdJustmg
screw

2
Lock

nut

Fig
ET
20
Servo

diaphragm
adjusting
screw

Servo

diaphragm

Servo

diaphragm
stroke

Link

EC015
3

Disconnect
servo

diaphragm
vacuum

hose
from

intake

manifold
and
connect

it
to

vacuum
control

valve

Connect

vacuum
hose
of

control

valve
to
intake

manifold
normal

piping

Racing

Place
shift

lever
in

neutral
for

MfT
or
N

or
p

for

AlT
Raise

engine
speed

up
to

approximately
3

000

rpm
under
no
load
and

close
throttle

valve

by

releasing

it

from
hand

Examine

engine
speed
to
see

whether
it
falls
to

idling

speed

I
When

engine
revolution
rails
to

idling
speed

See

Figure
ET
24

The

primary
throttle

valve
is

opened
by
the
link

connected

to
it

When
the

engine
speed
is
increased

to

approximately
3

000

rpm
and

lowered

natually

from
this

speed

changes
in

servo

diaphragm
link

stroke
manifold

vacuum
and

en
ine

speed
are
as

shown
in

Figure
ET
21

o

u

u

0

2
Se
o

diaphragm
link
stroke

I
u

2

Full

0

o

Intake
manifold
vacuum

u

c

E

c

O
3000

c

e

Engine
speed

2000
g

i

c

1000

T
j

Time

second

Fig
ET
21

Changes
in
servo

diaphragm
link
stroke
intake

manifold
vacuum
and

engine
speed

ET
14

FUEL
SYSTEM

c

Oke
valve

1

Or

Rubber
band

Fig
EF
2B

Adjusting
choke
unloadeT

Hi
metal

setting

Measurement
of
bi
metal
heater

resistance
Install
the

bi
metal
cover
in

place
on

the
carburetor
Make

sure
that

the
resistance

across
the

terminal
and
the
carburetor

body

is
in

the

range
from
8
6

to
9
0

ohms
Measure

the

resistance
without

electric
current

through
the

heater
and

at
about

210e
700F

Note
Use
an
accurate

measuring
instrument
such
as
a

wheatstone

bridge

2
Bi
metal

cover

setting

Position
the
hi

metal
cover
until
the
index

mark
is

aligned
at
the
middle

point
of
the
scale

Note
When
somewhat
over
choked
set
bi
metal

cover

after

turning
it
clockwise

slightly
Fig
EF
29

Setting
hi
metal
cover

EF
17