Adjustment Of Interlock Opening Of Primary And Secondary Throttle Valves; Dash Pot Adjustment (Automatic Transmission Car Only); Remove The Air Cleaner; Removing Choke Chamber And Servo Diaphragm - Datsun 1200 1971 Workshop Repair Manual

ruel S stem
Note When somewhat
over
choked set
bl metal
cover
after
turning
it clockwise
slightly
Adjustment oflnterlock Opelntng of
Pnmary
and
Secondary
Throttle Values
Open
the
pnmary
Side throttle valve 48 from
the
fully
closed
positIOn
and
measure
clearance
GIn between the throttle valve and
throttle
chamber mSlde wall
as
shown
m
Figure
99
GIn 0 228
m
WIthout
dlsturbmg
the above
settmg
bend
connectmg rod
as
necessary
so
that
secoridary
throttle valve
IS
about to
open
Upon
com
pletIOn of the adjustment
make
sure
that the
hnk system operates
smoothly
Dash Pot
Adjustment
AutomatIC Trans
mlsszon car
only
It
IS
necessary
that the
Idhng speed
of
engme
and
mIxture
have been well turned
up
and
engme IS
suffiC1
n
y warm
1
Turn throttle valve
by
hand and read engme
speed
when the da h
pot Just
touches the
stop
per
lever
Adjust
the
pOSitIOn
of the dash
pot
by
turnmg
the
nut
until the
engine
speed
IS In
the
range
from
1
900
to 2
000
rpm
Make
sure
that the engine
speed
IS
smoothly
leduced from 3 000
to 1
000
rpm
within
a
few
econds
Removal
Remove the
aIr
cleaner
DIsconnect the fuel line
vacuum
line
automatic
choke harness and
antl
dlesehng
solenOId harness from carburetor
Remove the throttle lever
Remove four
nuts
and washers
retaining
the
carburetor
to
the mamfold If
necessary
LIft the carburetor and remove from the
mamfold
Remove and dlscard the
gasketcused
between
the carburetor and mamfold
8
Disassembly
The
main Jets
and needle valves
on
both
primary
and secondary
Sides
are
accessible
from outSIde of the carburetor for disassem
bly
Remove throttle
return
sprmg
Remove
pump
level
shaft take
out
pump
lever and
pump
connectmg
rod
Remove rubber
pipe
from choke
piston
Loosen off bolts
secutlng servo
diaphragm
In
positIOn
take
out dIaphragm
Back offtotal offive bolts which hold choke
In
posItion
and
remove
rods of
starter
system
take
out
choke chamber
In removmg chamber
exercise care
to
aVOId
damaging
float
The
pnmary
and
secondary
emulsIOn tubes
can
be disassembled
by
removmg
the
main air
bleeds
on
the indiVidual SIdes
UII
ij
Fig 101 Removmg
choke chamber and
servo
diaphragm
o
llQt
o
Fig
102
Removmg emulsion tubes