Table of Contents
Advertisement
46
Adjusting the carburetion and
idling
speed (hand adjustment)
(fig
29)
Proceed as follows
Warm the
eng
ine
to its normal running tem-
perature.
2
Fully
screw
i
n
screws
«E
»
idling adjusters
,
then undo them by 1 turn and a
half.
3
Check
with your
hands if the exhaust pipe
pressures
are equal. If necessary act
on screws
«0:,
of
a carburettor
until
the
pressure will
be
the
same (idling speed
will have
to be kept at
900-1000 r.p
.m
.
about
;
as a consequence
it
will
be necessary
to
screw
in the screw of the car-
burettor
for the cylinder giving a lower exhaust
pressure,
or
screw out the screw of the carbu-
rettor
for the
cylinder
giving a higher
exhaust
pressure)
.
4
Acting on sCrews
«E.,
get the best carbura-
tion for each cylinder
(it
is
realized by an in-
crease of r.p .m.) and
adjust
then idling speed
according point
3.
5
Ois
connect one
spark
plug
lead at
a
time and
check
that the engine
'
in both
cases
stops after
firing 5-6 strokes
.
If this does not
occur,
screw
out screw
«0
»
of
carb
urettor making
'
the engine
firing more
th~ln
5-6
strokes.
or
-
if this is the
case -
screw
in
screw «0
»
of
carburettor ma-
king
the
engine
firing less than 5-6
strokes
.
6
Adjust idling speed at 900-1000
r.p.m.
by scre-
wing or unscrewing both screws
«0
»
by
the
sa-
me amount.
7
With throttle
control
grip closed
check that
there
is
a clearance
of
mm
1
...;-
1,5
(.039" ...;-
.059
")
between
cable
ends and wire
adjuster
screws
«F.,
of both
carburettors.
8
Ensure that throttles
open
si
multaneously
by
p
roceeding as
follows
:
gradually turn
the throt-
tle control grip
and
c heck
that
exhaust p
ipe
pressure
increases
in
sync
hronization by mean
s
of both
hands.
(An assistant
will be needed
for
this
operation).
If pressure increase
of one
cyli
n-
der
is
advanced
, act o
n its
carburettor
by
gra-
dually
screwing
in wire adjuster
,:F."
after loo-
sening counternut
«G»,
until the
synchronization
of both exhaust pipes pressure is reached
.
Hide quick links:
Advertisement
Table of Contents
