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Ferguson Tractor and The UT Carburetor

Carter UT
Ferguson Tractor
Models
(997S-2709S) – TO-30 Tractor(2223S-2402S – TO-35 Tractor

A-HO-60 Stationary Power Plant

Carburetor numbers: 997S, 2223S, 2402S, 2709S
Ferguson Tractor

Dimensions:
Flange Size: 1″
Throttle Bore: 997S-2709S: 1 1/16″ / 2223S-2402S 1 3/16″
Main Venturi: 997S-2709S: 23/32″ / 2223S-2402S 13/16″Float Setting: 997S, 2709S – 17/64″, 2223S, 2402S 11/64″

Float adjustment: With throttle body inverted and gasket removed, there should be (the clearance indicated above) between machined surface of throttle body and seam of float. Measure both sides and make them the same.

UT Float Setting

Idle Adjustment: Set throttle lever adjusting screw until motor runs approximately 400 RPM. Then set idle adjustment screw for highest steady vacuum gauge reading or smoothest engine operation. Correct setting will be found between 1/4 to 1 1/2 turns open.
High Speed Adjustment: With hand throttle wide open and engine operating 2000 RPM (governed speed), adjust high speed adjusting needle until smoothest engine operation is obtained. This setting will be found between 3/4 to 1 1/2 turns open.
Exploded View
1-979S
Throttle body assembly (997S)
37-61S
High speed adjusting needle assembly
1-1242S
Throttle body assmelby (2223S)
39-10
Throttle and choke valve attaching screw
1A-48
Flange Gasket
47-26
Welch plug
2-154
Throttle valve
58-79
Venturi
3-805S
Throttle shaft and lever assembly
61-84
Idle adjustment screw spring
7-175S
Choke valve assembly
61-481
Choke lever spring
11-236S
Low speed jet
61-492
Float lever bracket spring
11B-79
Rivet plug
101-160S
Body attaching screw and washer assembly
11B-108
Idle port rivet plug
101-340
Throttle adjusting screw
11B-194
Bowl drain plug
120-188
Metering jet 997S, 2709S
12-366S
Nozzle assembly
120-208
Metering jet 2223S, 2402S
14-447S
Choke shaft & level assembly
121-228
Body gasket
15A-13
High speed needle packing nut
121-230
Body gasket
20-22
Nozzle gasket
136-32
High speed adjusting screw washer
20-123
Needle seat gasket
136-131
Air horn, choke and throttle shaft dust seal retainer
21-149S
Float and lever
136-181
High speed adjusting screw washer
24-15
Float lever pin
156-93S
Elbow and strainer assembly
163-21
Choke and throttle shaft dust seal
163-62
Air horn seal
163-63
Main metering screw packing
Updated on 12/08/2020

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