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4
adjust the position of the fuel flow adjusting
screws
"A
..
to reach
the
highest
possible
idling
speed,
then
re·check the position of
the two mercury columns of the
"Vacuum
gauge".
repeat
eventually the adjustment
according to point 3;
5
Synchronization of carburettors
:
idling speed adjusted, synchronize
the car·
burettors by proceeding as follows:
-
start the engine and
gradually
open the
throttle
control grip. checking
that
the
two
mercury columns of
the
"Vacuum
gauge"
•
F
..
are
aligned.
otherwise turn
the adju sters
of control cables" C
.. (loo-
sen !irts the counternuts) until the align·
ment
is
reached
;
-
ensure
now that the two
cables
have
an
idle travel of
mm
1
+
1,5
at
the screw
connect
ions;
-
remove then the pipes from
the
holes
.
E
"
and re--lit the screws with their washers
;
-
also
cheack
that the two
control cables
for
the
"Starters"
have an Idle travel 01
mm
3
at
the adjuster
screw
connections.
AIR
FILTER CARTRIDGE REPLACEMENT
ON ASSEMBLED VEHICLES
(Iig. 270)
Every
10.000 Km (6000 miles) replace
the
ail
138
filter cartridge
"
C
.. ;
it is
housed
in a box
to·
gether with the oil breather
ass.y,
under the
fuel
tank.
To remove the
air filter cartrdige
•
C
..
from
the housing
..
A"
proceed
as
follows:
-
lift the
saddle and secure it
with the
proper
rod
;
-
remove
the
tool
box.
unhooking the
bra·
cket;
-
unhook the fuel tank
holder,
rear
side,
and
remove the fuel lank
itself
(first
close the
taps
and
detach the pipes);
-
detach
the
electric
wiring from
the
battery.
unhook the battery
brackets and
remove
the
battery;
unhook the
springs securing the
brackets
..
E
"
,slide
out the rubber
sleeve
"
F
"
from
carburettors and
breather
;
-
unhook the
breather
"
G ..
with
pipes
"
I
"
from the holders
..
H
..
,
then
undo
the
se·
curing nut
..
B
..
and remove the filler
..
C
..
with bottom
..
0
...
Paying attention
10:
re-
ference
notch and
assembling
position
ing
Replace the
filter
.. C ..
with
a
new
one
and
n-
fit the components reversing
the
dismantling
sequence.
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