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32
SPECIFICATIONS
FUEL SYSTEM-(Continued)
BBD SERIES CARBURETORS
CARBURETOR
Type
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission
.........................
Automatic Transmission
........................
Bore
.........................................
Venturi
.......................................
Main Metering Jet
Standard
...................................
One Step Lean
..............................
Two Steps Lean
..............................
Step-up Wire
..................................
Diameters
(2
stage)
...........................
Float Setting (at center
of
floats)
. . . . . . . . . . . . . . . . . .
Bowl Vent Valve (throttle closed)
. . . . . . . . . . . . . . . . . .
Choke Unloader
...............................
Idle Mixture Screws (turns open)
. . . . . . . . . . . . . . . . . .
Idle Speed R.P.M. (curb idle)
......................
Vacuum Kick Adjustment (Drill Size)
. . . . . . . . . . . . . . . .
Fast Idle Cam Position
...........................
Fast Idle Speed R.P.M.
..........................
Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Type
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENTS
(Air Conditioning ON)
........................
CHOKE
CARBURETOR
Type
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Displacement (cu
.
in.)
.....................
Bore
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Venturi
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Metering Jet
Standard
...................................
Two Steps Lean
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
One Step Rich
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step-up Wire (Standard)
........................
Diameter
(2
Stage)
...........................
Accelerator Pump Setting
........................
Float Setting (at Center of Floats)
. . . . . . . . . . . . . . . . . .
Vacuum Kick Adjustment (drill size)
. . . . . . . . . . . . . . . .
Fast Idle Cam Position Adjustment
(drill
size)
. . . . . . . .
Bowl Vent Valve (at
curb
idle)
....................
Choke Unloader
...............................
Idle Mixture Screws (Turns Open)
.. ... ... .. ... .. . . .
OneStep lean
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENTS
Ball and Ball Dual Downdraft
273 Cu
.
In
.
Engine
BBD-3843s
-
BBD-3844s
.
1
'I1
6"
1
l
Il
6"
1
'I1
6"
1
Il
6 "
#
120-2945
#
1 20-294s
#
120-2975
#
120-2975
#
120-298s
#
120-2985
75- 1 645
75- 1 642
.
025
x
.
022"
.
026
x
.
022"
%
' I
%
lIl6"
Il
6 "
%
I '
%
1
1
500
500
500
500
#16
#30
'164''
'164''
700*
700*
Thermostatic Coil Spring
Well
Well
On Index
On Index
Manual
Transmission
Dual Throat Downdraft
BBD-3849s
361 -383
1'/16''
1
'I1
6"
120-3045
120-296s
120-302s
120-306s
75-1651
.
033
x
.
027"
Ball and Ball Dual Downdraft
318
Cu
.
In
.
Engine
-
BBD-3847s
.
BBD-38485
1
'/I 6 "
1
'i1
6 "
1'/16"
1
'11
6"
#120-299s
#120-2WS
#
120-300s
#
120-300s
#
120-301 5
#
120-301 5
75-1 645
75-1641
.
026
x
.
022"
.
028
x
.
025"
Thermostatic Coil Spring
Well
Well
On Index
On Index
Automatic
Transmission
Dual Throat Downdraft
BBD-3850s
361 -383
1
'11
6"
1
'11
6"
120-3045
120-296s
120-3023
120-3065
75- 1 652
.
035
x
.
027"
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