Datsun 1000 - TO CLEAN PARTS; TO SERVICE MAIN BODY

the carburettor
top
cover
assembly
Disconnect the
choke
link
during
this
operation
5 Remove the three
retaining
screws and
separate
the
carburettor
flange
from
the main
body
6 The
carburettor has
now
been
dismantled
into
its
three
major components namely
main
body flange
and
top
cover
TO CLEAN PARTS
1
Clean all carburettor
components
in
petrol
or
cleaning
solvent and
place
in
a suitable
container
2 If
compressed
air
is
available blow each
component
clean when
assembling
NOTE
Du not clean
jets with
wire drills
or other
mechanical
means as
orifices may
become
enlarged causing
too rich a mixture
for proper perfomzance
3 Clean
away any
carbon
deposits
that
may
have
accumulated around
the
throttle
valves
4 Discard
all
used
gaskets
and
packings
5
Before
assembling
check all fuel
passages by
blowing through
with
compressed
air
TO SERVICE
MAIN BODY
1
Remove
the
primary
and
secondary
main air
bleeds
2 Remove
the
primary
and
secondary
emulsion
tubes
3 Remove the
primary
slow
jet
4 On 1200 models
only
remove
the
secondary
slow
jet
5 Unscrew the
two
plugs
to
gain
access
to
the main
jets
and then
remove the
primary
and
secondary
main
jets
6 On 1200
models remove
the
power
valve
7 Withdraw the
accelerator
pump plunger
invert
the
carburettor
body
and
remove the
plunger
spring
and check
ball
8 With the
carburettor
body
still inverted allow
the
accelerator
pump
outlet
weight
to become
dislodged
from
its bore
9
Using
a small file remove the
peening
from
the
ends of the
high
speed
valve
retaining
screws
and mark
the
valve in
relation
to
the carburettor
body
to facilitate
correct
assembly
10
With a suitable
screwdriver
remove
the two
high
speed
valve
retaining
screws and withdraw the
high speed
valve
11
Remove the
high
speed
valve shaft from the
body
NOTE
Onlv
remove
the
high speed
valve
and
shaft from
the carburettor
bodv
if
it is
unserviceable
12
Now that
the
carburettor
main
body
is
dismantled check
all
components
for
serviceability
and
make
replacements
as
found
necessary
Fuel
System 4
l
sLOWJET
Slow Jets and Main Air Bleeds Dismantled from
Carburettor Main
Body
1000 Series
13 Inspect
the
body
for cracks and all
gasket
surfaces
for nicks or burrs
14 Check the
power
valve for smooth
operation
and
proper
seating
If
necessary
blow
against
the
power
valve to
ensure
that it
does not leak
15
Check
the
accelerator
pump plunger
for
wear and
for smooth
operation
in the
plunger
bore Check
the
spring
for
rust or weakness
16
Check
the
high speed
valve
shaft
for excessive
play
in the
body
and
also for bend
17
Reassembly
is a reversal
of the
dismantling
procedure
with attention
given
to
the
following
Instal
all
new
gaskets
when
reassembling
Peen the
ends of
the throttle and
choke
valve
retaining
screws to ensure
that
they
will
not
b
comc
dislodged
in
service
TO SERVICE
TOP COVER
The
carburettor
top
cover assembly
which
houses the
choke
valve and
shaft
normally requires
very
little
service
Do not
remove the choke
valve and
shaft unless it is
absolutely necessary
1
Remove
the
primary
and
secondary
slow air
bleeds
On
1000 models the
primary
side
only
37
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