•
~
- -
- - ·
Ma
in
...J.,:.~\--
~
--
adjusting
Sl
ow
adjusting
screw
'
\(7
~
(;::'\-
Fig. 7-
11
Single
ca
rbur
etor
Fi
g.
7-12
Twin
ca
rbL1r
etor
\
\
I
--
screw
\
/----
' (
-
•
Slow
adj usti-
ng
Main
adjusting
screw
~
screw
~~
'\
Fig. 7-13
Twin
ca
rbur
e
to
r (left-hand side}
•
/
'-
··
Sl
ow
adjusting
Fig. 7-14
Twin
carburetor (right-hand side)
ENGINE
MAINTENANCE
-Carburetion and Fuel System
The setting is done
with
the
consideration
that
the
snowmobile
is
used
in
winter
at
low
altitude.
If
the
snowmobile
is
operated
at
high
altitudes
or
under special
atmospheric conditions,
the
specified setting may
not
be
suitable. Accordingly, the carburetor may be readjusted
so
that
its performance
wil
I be
maximum.
The adjust screw should
be
turned
out
from
a
lightly
seated
position according
to
the
following
table.
Number
of
turn
s
to
be backed
off
'.
(See
following
table)
Sl
ow
Adjusting
Sc
r
ew
Main Adjusting Screw
SW433C
- -
-
SL4338
1
1
-3/
8
EL433B
.
1
1-3/8
EW433C
7/8
•
1-1
/8
- -
GP4338
-
-
SL338D
-
-
.
- - -
GP338
-
-
-
•
7-2-3
Fuel Level Adjustment
The Keihin carburetor
is
provided
with
a level
pipe
which
is
u
sed
fo
r fuel level adjustme
nt.
When adjusting
the
fuel
level, remove the level pipe cap and start the engine. Keep
the engine speed
at
idling speed, and the gasoline
will
rise
up
to
the specified fuel level.
If
the
fuel l
eve
l
is
not
in this range,
loo
se
n
th
e fuel level
adjust
sc
rew
l
ock
nu
t, a
nd
a
dju
st the fuel level
by
turning
ir1
and
out
th
e fuel level adjusting
sc
rew, located on
the
.
bottom
of
th
e
ca
rbur
e
tor.
=--'1>
~
-
-\-0
,
"\H
,£,
....
"'
\
\>.;.l'_..I
~I~
0
::
Contacting
su
rface A
\ \
(
-
-
I
..
'
\
•
-
Fig. 7-15
I
I 1
-79-
•
•
•
•
•
•
.
•
!
•
I
'
•
•
,
•
•
•
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