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3
Warm
up
the engine to
ItS normat
running
temperature.
Screw
In
lully
Idling ad,usters
..
C
..
and
then
screw
them
oul
,.' . t
turns.
4
USing
both your
hands,
check
.1
the exhaust
pipe
pressures
are
equal. II any difference IS
noted,
operate
on
screw
..
0
..
01 one
carborenor
unlll
the
exhaust
pressure
01
bolh carbIJrenors
is
the
same
(idling
speed
should
be
kepI at
no
more
than
900·1000
rpm
and consequenlly
.t
may be necessary
to screw
in
the screw
01
the
carburenor lor the
cylinder
giving a lower exhaust
pressure,
or screw out
the
screw
01
the carburet·
lor
lor
Ihe cylinder giving
a
higher e)[hausl pres·
sure).
S
Acting
on screw
-C.
get the beSt carburatJon
lor each
cylinder
(this
IS
perceIVed by an increase
of
rpm).
and
then adjust idling
speed
aCCOrding to
poinl4.
6
Oiconnect
one
spark plug
lead
at
lime
and
check
that
In both
cases
the
engme
slops after
firing the
same
number of
revolutions.
If
it does
not. screw out screw
,,
0
.. 01
the carbureTlor mak-
ing
the engine lire more
strokes or
screw In !Of
Ihe carburettor making
the
engine lire less
strokes.
7
Adjust idling speed
at
900·'000
rpm by
screwing
in
or oul
screws
..
0
..
(bolh)
by the
same amount
8
Ensure that Ihe throttle
valves
open
Slmul·
41
taneously
by
proceeding
as
tallows:
gradually
tum the throttle control grip and
check
that the
exhaust pipe pressures
Increase
in
sychronization
using both your hands
(an
assistant
IS
necessary
lor Ihis operahon)
If
the
pressure .ncrease
of
one
cytlnder
.s
ad-
vanced,
act on .ts
carburettOf
by
gradually
screw-
.ng
in
cable adjuster
..
F
~
until tile
synchrOflizatlOfl
of both exhaust
pipe pressure IS
reached
N.B.
- In
order to abram
a
correct
adlusfmenf
of
the carburalKNl
II
IS
necessary to
apply to
anyone
01
our dealers whO
can carry ouf
thIS operatIOn
by
means of a vaClJOmBIer.
. .
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