Service manual
c
c
c
•
Remove
the
nuts
securing
the
carburetor
to
the
intake
manifold and
remove
the
carburetor.
NOTE: Do not
damage
gaskets
when
removing
carburetor.
•
Installation
is
the
reverse
of
removal.
Adjust
carburetor
as
described
in
Carburetor
Adjustment
procedures.
Carburetor
Adjustments
The
Tillotson
Model
HD
and HR
carburetors
used
on
Ski-Daddler
Models SD18E20B, SD18P27A,
SD18E25B, SD18E27A and SD18P21A
are
equipped
with a
recirculation
system.
1::
~AUTION
1
Never
run
the
engine with
the
carbu-
retor-to-tank
recirculating
gas
line
disconnected
(see
figure
8)
The
Bendix
Model
carburetor
used
on
Ski-Daddler
Model SD15P10B
is
a
floattype
carburetor
and
does
not
require
a
recirculation
system.
The fuel
is
SERVICE
AND
REPAIR
pumped
to
the
carburetor
through
an
external
fuel
pump
mounted on
the
console
assembly.
The
carbu-
retion
system
maintains
a fuel
reservoir
in
the
float
chamber
to
insure
smooth
starting
and
idling
characteristics.
When
adjusting
the
carburetor,
best
results
will
be
obtained
if
the
adjustments
are
made
on a
warm
engine.
During
carburetor
adjustments,
DO
NOT
FORCE ADJUSTMENT SCREWS INTO SEATS.
• TO
ADJUST CARBURETOR -
Close
the
high-
speed
jet
(DO
NOT FORCE).
Then
open
the
high-
speed
jet
(figure
8)
to
the
settings
shown on
the
carburetor
settings
chart
for
your
particular
engine (
see
figure
10).
The
high-
and
low-speed
jet
adjustment
screws
for
the
Bendix
carburetor
used
on Model SD15P1
OB
are
located
on top of
the
carburetor
and
are
identified
as
HI
and LO.
The
engine
can
be
seriously
damaged
if
operated
with a
lean
gas
mixture
(high-
speed
jet
turned
in
too
far).
CARBURETOR SETTINGS CHART
MODEL NO.
ENGINE
HIGH·SPEED
JET
LOW·SPEED JET
SD18E20B Hirth 493
+ 1/8
+
1/8
1 Open
1·1/8 Open
-
0
- 0
SD18E27A
Hirth 399
+
1/8
+ 1/8
1
Open 1
Open
-
0
- 0
SD18P27A
Hirth 399
+
1/8
+
1/8
1
Open 1
Open
-
0
- 0
SD18P21A
Hirth 634
+
1/8
+
1/8
1·1/8
Open
1·1/8 Open
-
0
- 0
SD18E25B Kohler 399
+
1/8
1·5/8 _ 0 Open
1.
1/8
+
1/8
Open
- 0
SD15P10B
JLO 295
1
+ 1/8
-
0
1·1/2
+ 1/8
Open
Open
-
0
NOTE:
The
carburetor
settings
shown
are
for
normal
operation
at
sea
level.
For
high
altitude
operation
and
for
extreme
temperature
variations,
the
settings
may
have
to
be
adjusted
accordingly.
Figure
JO
1002472
11