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Tune
Up
Datsun
Fig
36
AdJustmg
tlmmg
7
Adjust
the engIne Idle
speed
to
the
speclficalions
In
the
tune
up chart
at
the end of thiS
seclion
These
speclficalions
are
determIned
by
the
year
model
engllle
and
transrmSSlOn
In
your
car
8
Pomt the
lirmng
hght
at
the tunIng
marks located
on
the crank
pulley
and
cover
Fig
36
Check the
dwell
as
Indicated
on
the
tachometer dwell
meter
If these
two
readmgs
meet
the
speclfica
lions
hsted
at
the end of this
sec
lion
stop the engIne
and
discon
nect the test
equipment
If
not
proceed
to
the
follOWIng
steps
9
To
adjust
the tlmmg loosen the
holddown bolt and
turn
the dls
tnbulor left
or
nght
unlil the
cor
rect
timIng
IS
Indicated
Then
lighten
the holddown bolt
Fig
37
10
To
adJustthe
pomt
gap
read
as
dwell
on
dwell
meter
With the
en
gme
runrung
Stop
the engIne and
remove
the distributor cap and
rotor
To
decrease the dwell
Widen the
pomt
gap
slightly
To
40
Fig
37
Holddown bolt locatIOn
Increase
the dwell
decrease the
poInt
gap
shghtly
Reassemble the
dlstnbutor
and
test
Repeat
the
procedure
unlil the correct
readmg
IS
obtaIned Dwell
IS
the
only
way
to
measure
pomt
gap while the
en
gme
IS
runnmg
so an
mabllity
to
get
a
proper
readmg
mdlcates
a
dlstnbutor malfunction
If tlus
IS
the
case
have the distributor
re
parred by
a
qualified
mechaniC
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