F4-134 Carburetor Specs - Truck

Carburetor: Specs:
Make Carter
Model YF 951 SA
Flange Size 1 1/4" [3,17 cm.]
Primary Venturi 11/32" [8,73 mm.]
Secondary Venturi 11/16" [17,46 mm.]
Main Venturi 1 1/4" [3,17 cm.]
Float Setting 5/16" [7,93 mm.]
Gasoline Intake Needle Seat No. 48 (.076") drill [1,93 mm.]
Low Speed Jet Tube:
Jet No. 70 (.028") drill [0,711 mm.]
By-Pass No. 56 (.0465") drill [1,181 mm.]
Idle Bleed No. 56 (.0465") drill [1,181 mm.]
Economizer No. 54 (.055") drill [1,397 mm.]
Idel Well to Bowl Bleed No. 73 (.024") drill [0,609 mm.]
Idle Port .184" x .030" [5,67 x 076 mm.]
Lower Port (for Idle Screw Adjustment) .0615" to .0655" dia. [1,56 a 1,66 mm.]
Set Idle Adjustment Screw 3/4 to 1 3/4 turns open
Main Nozzle Antipercolator
Well Vent in Plug No. 74 (.0225") drill [0,571 mm.]
Metering Rod .07325" x .0655" x .057" x .04725"
Metering Rod .07325" x .0655" x .057" x .04725" [1,860 x 1,663 x 1,447 x 1,200 mm.]
Metering Rod Jet .0935" dia. [2,375 mm.]
Accelerating Pump:
Pump Jet No. 68 (0.31") drill [0,787 mm.]
Intake Passage No. 72 (.025") drill [0,635 mm.]
Intake Ball Check Seat ……
Discharge Check Seat No. 42 (.0935") drill [2,375 mm.]
Vacuum Restriction No. 55 (.052") drill [1,320 mm.]
Vacuum Passage (Diaphragm Bleed) No. 65 (.035") drill [0,889 mm.]
Pump Bleed ……
Vacuum Spark Port .054" to .056" dia. [1,371 a 1,422 mm.]

* Excerpt from the Service Manual for Jeep Utility Vehicles page 112