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SERVICE AND REPAIR
I~
sufficiently to take up the play in the throttle control
lever.
• Adjust carburetor as described in carburetor
adjustment procedures.
Carburetor Adjustment
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 as shown in figure 10 (DO NOT FORCE)
.
Then open as indicated in the carburetor adjustment
chart, figure
11
for the particular model
Ski-
Daddler.
• Turn the low speed jet (idle-mixture screw) as
shown in
figure
10 all the way in (DO NOT FORCE),
then open as indicated in figure 11 for the particular
model sled. This adjustment controls the mixture
at
idling
speeds.
A lean idle mixture will result
in poor acceleration.
Keep the
idle
speed slower than the clutch engaging
speed 'by adjusting
the
idle-speed
screw. NOTE: Do
not use the low-speed
jet
to
adjust for idle speed.
Throttle Plate Adjustment,
HD Carburetor
Figure 8 shows the throttle-wire
adjustment screw
used on all Mark
VI and Mark XX 295 series sleds.
If
the throttle plate fails
to open completely when
the throttle control lever is
depressed, loosen the
throttle-wire adjustment screw
and readjust the
wire as required to fully open
the throttle.
SKI-DADDLER MODEL
CARBURETOR
MKVI
Tillotson HD
Carburetor
MK XX 399 and 439
Tillotson HR Carburetor
MK XX 295
Tillotson HD Carburetor
Throttle Plate Adjustment, HR Carburetor
Set
the
choke
controls (figure 10) to off-choke posi-
tion.
This
will
permit inspection
of the throttle
control plate located
inside
the
carburetor.
Check
to
ensure that both
throttle plates
are
in the fully
open position when
the throttle
control is de-
pressed. To adjust the
throttle
control
plate, pro-
ceed as follows:
•
Loosen the
locknut
and jam
nut securing the
throttle rod screw
to the throttle arm.
Figure JO
CARBURETOR ADJUSTMENT
HIGH-SPEED JET
LOW-SPEED JET
(TURNS)
(TURNS)
1-1/8 :
~/8
Open
1-1/8 + 1/8 Open
-
0
2-1/4
+
1/4 Open
- 0
1-1/4
+
1/8 Open
- 0
1-1/8
+
1/8 Open
- 0
3/4 :
~/8
Open
Figure J J
JO
)
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