Datsun 1000 User Manual

4
EmiJJ
ion
Control
NOTE As
soon as
the
engine
is started inlet
manifold
vacuum should actuate the seroo
diaphragm
and
pull
the
diaphragm
link
upwards
until
the link
stop
abuts the servo
body
6 If the servo
diaphragm adjustment
is
correct
the
engine
speed
should
read between 1700
and 1800
rpm
7
If
the
engine
speed
is
below the lowest
figure
quoted
then
back
off
the
lock nut and
turn
the
adjusting
screw
clockwise
slightly
until the
engine
speed
falls
within
the
figures quoted
8 When
the
engine speed
is above the
highest
figure
quoted
back
off the locknut
and
turn the
adjusting
screw
in
an anti
clockwise direction until the correct
engine speed
is
obtained
9
Retighten
the
locknut after
adjusting
as described
in
operation
7
or
8
whichever
was applicable
making
sure that the
adjusting
screw is not disturbed
NOTE
See
diagram
for
situation
of adjusting
screw and
locknut
10
Start the
engine
and disconnect the servo vacuum
hose
from
the
inlet manifold and
reconnect
back
to
the
control valve Reconnect the control valve vacuum
pipe
back to the inlet manifold The control valve and
servo
diaphragm
vacuum
piping
should now
be back in its
original
position
II
Restart
the
engine
and
by actuating
the
carburettor throttle lever
by
hand
bring
the
engine up
to
3000
rpm
12 Release
the
throttle lever and let the
engine speed
decrease of
its
own accord
3 The
engine speed
should
decrease
from 3000
rpm
to
1000
rpm
in 3 5 to 45 seconds
for manual
transmission
equipped
vehicles and 2
5
to
3
5 seconds for
automatic
transmission
equipped
vehicles
14
If
the
engine
speed
decrease tUnes
are not within
the limits
specified
for
respective applicable
model then
loosen the control valve lock screw and turn the vacuum
adjusting
screw
slightly
until
the
engine speed
decrease
time
falls within the lime
figures
as
quoted
in
operation 13
See
diagram
for control valve lock screw and
adjusting
screw situation
NOTE Turn
the
adjusting
screw in a
clockwise direction to
lengthen
the
engine
speed
decrease
time and an
anti
clockwise
direction
to
shorten the
engine speed
decrease
time
IS When satisfied the
adjustment
is correct
tighten
the
control valve
lock screw and
recheck the
engine speed
adjustment
to ensure that
the
vacuum
adjusting
screw has
not altered
position
CARBURETfOR
To
obtain effective exhaust emission control it is
important
that the
carburettor
idle
speed
and mixture
setting
are periodically
checked and
accurately
adjusted
The choke
setting
should be checked
and
adjusted
to
affecting
the tinal result
regarding
exhaust emission control
To
Adjust
Idle
Speed
and Mixture
I
Connect a
tachometer
to
the
engine
distributor
2
Start and run the
engine
until it reaches normal
operating temperature
3 Allow the
engine
to
operate
for one minute at
idling speed
4
Adjust
the throttle
adjusting screw
and the idle
mixture screw in
conjunction
with each other until a
smooth idle
speed
of 750
rpm
is obtained 780
rpm
for
automatic transmission
5
Now turn the idle mixture screw clockwise
to
reduce the
engine speed
to 700
rpm
750
rpm
for
automatic transmission
6 For vehicles that are fitted
with
automatic
transmission
the idle
speed
should be
600
rpm
when the
shift lever
is
moved to
the
D
position
This
can
be
checked
after
operation
5
and
any
subsequent
slight adjustment
made
IMPOR T
ANT
Ex treme care
should
be exercised when
carrying
out
adjustment
with the transmission in the
drive
pas
tion
7
Stop
the
engine
and
disconnect the tachometer
ELECTRICAL
EQUIPMENT
To ensure efficient
burning
of
the fuel
in the
engine
combustion chamber it is
important
that
all electrical
equipment
be
periodically
checked for
serviceability
as
a
fault
in
anyone piece
of electrical
equipment usually
has
adverse effects
on
other related
components
as
well
as
affecting
the final result
regarding
exhaust
emission control
Spark plugs
Remove
and sand blast the
plugs
at
the
recommended
checking
intervals Check each
plug thoroughly
for
cracking
chipping
and
for excessive
wear
at the electrodes
Renew
the
plugs
as found
necessary
If the
spark plugs
are
still
serviceable
file
the
centre
electrodes flat
prior
to
setting gaps
with the
correct
adjusting
tool
See
Specifications
section
for
correct
electrode
gap
High
Tension
Leads
Remove
the
distributor
cap
with
high
tension
leads
from
the
engine assembly
206
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Datsun 1000 Specifications

General

Brand	Datsun
Model	1000
Category	Automobile
Language	English