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BE~lOQlC
MAINT ENANGE AN0 TUNE-UP PROCEDURES 2-14
I -
Remove
the
respective vacuum inlet screws
and
b&w
v '
insert the adapters in the holes. Connect the bal-
ancer gauge hoses to these adapters, and balance
the four carburetors as follows:
Start up the engine,
and
keep it running at
* . . .
1 750 r/min.
<-
I
09913
-
1491 1
Throttle valve adjust wrench
I
-(for
No. 2 a r b )
-
@
(for No.
1
)
-
C ( f o r No. 4)
A correctly adjusted carburetor
has the
steel
balls in
t h e
Nos.
1
and
4
tubes at the same
level, and those in the Nor. 2 and
3
tubes also
: ' % ;
at
the
same
Iwel,
but lower by
one
half of the
L
7
ball diameter than the
Nos. T
and 4 tubes
as
>
d -
NOTE:
*
If
an adjustment
is
required, it is suggated
that the fuel tank i s removed, and fuel
should
be
supplied by a separate fuel tank.
*
Be
sure
to plug the fuel cock vacuum line.
Each
vacuum
inlet screw has
a
gasket. Be
1
careful
not
to
leaw
out
this
gasket
0 )
.
--
After balancing carburetors, set its speed at
anywhere between
950
and
1
150
r/rnin by
turning throttle
stop
screw
a
.
shewn.
If the steel balls
are not
in
correct positions, ad-
just
the
throttle valve adjusting screw correctly
by using throttle valve adjust wrench.
Adjusting order:
a
-
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