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Form 6582—Canadian
CARTER CARBURETOR CORPORATION, ST. LOUIS, MO., U. S. A.
FRAZER 574S August, 1948
CAR SERIAL NUMBER
Frazer—F47-30770
Manhattan—F-47C-1021 118
FRAZER
SIX
MODEL "F-47"
1947
(LIMITED PRODUCTION)
Casting No. 421 on face of flaoce
W-I DOWN-DRAFT CARBURETER No. 574S—LIST PRICE $21.85
A $2.50 exchange allowance is deducted from the list price if buyer turns
in old carbureter.
CARBURETER SPECIFICATIONS
For Frazer Six Cylinder Engine: 3-5/16 Inch Bore, 43/8 Inch Stroke
Dimensions: Flange size, 11/4 inch S. A. E. Primary venturi, 11/32 inch
I. D.
Secondary venturi, 11/16 inch I. D. Main venturi, 11/4 inch I. D.
Float Level: Distance from float (at free end) to float chamber cover,
when needle is seated, to be 1/2 inch plus or minus 1/64 inch.
Vents: Outside, none. inside balance vent tube above choke valve 13/64
inch I. D.
Gasoline Intake: Square vertical needle. Size No. 48 drill hole in needle
seat.
Gasoline Line Connection: 5/ 16 inch weatherhead nipple.
Low Speed Jet Tube: Vertical jet size, .035 inch diameter. By-pass in
body, size No. 51 drill. Economizer jet, size .0545 to .0555 inch diameter.
Idle Ports: Upper port diameter, No. 44 drill. Lower port diameter, No.
54 drill.
Idle Port Opening: Top of lower port .044 to .048 inch above top edge
of valve, with valve closed tight.
Idle Screw Seat: Size No. 52 drill.
Set Idle Adjushnent Screw: 11/4 to 21/4 turns open. For richer mixture,
turn screw out. Do not attempt to idle engine below 350 r. p. m.
Outer Nozzle: In primary venturi, angle 30°. Discharge size, .125 inch
diameter.
Inner Nozzle: (Seats in outer nozzle) .120 inch I. D. Nozzle Retainer
Plug: Jet size No. 31 drill.
Metering Rod: Economy step .067 inch diameter. Second step tapers to
.062 inch diameter. Third step tapers to .060 inch diameter. Power step
.046 inch diameter. Length 33/8 inches.
Metering Rod Jet: Size .093 inch diameter.
Metering Rod Setting: Use gauge, part No. T109-25 (2.795 inches).
Accelerating Pump: Low pressure type with non-adjustable stroke. Discharge
jet, size No. 72 drill.
Intake disk check plug, size No. 62 drill.
Discharge disk check plug, size No. 40 drill.
Choke: Manual—butterfly type, offset valve.
Throttle Valve: Opens to within 0° to 3° from perpendicular.
Vacuum Spark Port: Slot type: size, .041 to .125 inch. Bottom of port
.000 to .004 inch above top of valve.
Motor Tune-Up=Be Accurate! Always Use Feeler Gauges!
CAUTION: Change worn or leaky flange gaskets. Tighten manifold bolts
and test compression before adjusting carbureter.
Spark Plug
Gap
.032"
Breaker Point
Setting
.020"
Ignition Timing
Breaker Points to Open:
T.D.C.
Valve Setting
COLD
Intake .014"
Exhaust .014"
Float Setting
(Use Gauge)
I/2 Inch
Idle Adjustment Screw Setting
1¼ to 21/4 Turns Open
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