Complete specifications for the International 756 and Farmall 756 tractors, transcribed from the specifications section of the factory operator's manual (form 1 082 649 R2). One book covers three tractor configurations and three fuel types, which is why almost every table below has more than one column.
The configurations are the Farmall 756 row-crop, the Farmall 756 Hi-Clear high-clearance version, and the International 756 standard-tread tractor. All-Wheel Drive was available on the Farmall and International. Engines are six-cylinder throughout: a 291 cu. in. unit for gasoline and LP gas, and a 310 cu. in. Robert Bosch-injected diesel, all governed to 2300 rpm.
One thing worth understanding before you read the ground speed tables. At the rated engine speed of 2300 rpm the 540 PTO shaft actually turns 590 rpm and the 1000 rpm shaft turns 1110. Standard shaft speeds of 539 and 1014 rpm arrive at 2100 rpm engine speed. That is why the manual prints two engine-speed columns for ground speeds: you will be running at 2100 rpm for PTO work and 2300 rpm otherwise, and the tractor moves at different speeds in each.
Engine
| Specification | Gasoline and LP Gas | Diesel |
|---|---|---|
| Cylinders | 6 | 6 |
| Bore | 3.750 in. | 3.875 in. |
| Stroke | 4.390 in. | 4.375 in. |
| Displacement | 291 cu. in. | 310 cu. in. |
| Full load (governed) speed | 2,300 rpm | 2,300 rpm |
| High idle (governed) speed | Approx. 2,530 rpm | Approx. 2,484 rpm |
| Low idle speed | Approx. 425 rpm | Approx. 550 rpm |
| Valve clearance, intake (engine warm) | 0.027 in. | 0.010 in. |
| Valve clearance, exhaust (engine warm) | 0.027 in. | 0.012 in. |
Ignition and Fuel
| Specification | Gasoline and LP Gas | Diesel |
|---|---|---|
| Battery ignition distributor, breaker point gap | 0.020 in. | — |
| Spark timing at high idle, gasoline | 18 degrees advance | — |
| Spark timing at high idle, LP gas | 24 degrees advance | — |
| Spark plug gap, gasoline | 0.023 in. | — |
| Spark plug gap, LP gas | 0.015 in. | — |
| Carburetor, gasoline | 1-3/8 in. | — |
| Carburetor, LP gas, American Bosch (Ensign) | 1-1/2 in. | — |
| Injection pump | — | Robert Bosch |
| Injection nozzles | — | Robert Bosch |
| Injection pump timing, engine stopped, start of injection | — | 14 degrees before TDC |
Power Take-Off Shaft Speeds
| Condition | Gasoline and LP Gas | Diesel |
|---|---|---|
| 540 rpm PTO | ||
| Full load (governed speed), 2300 rpm | 590 rpm | 590 rpm |
| At high idle (governed speed) | 649 rpm | 649 rpm |
| At low idle speed | 109 rpm | 167 rpm |
| At 2100 rpm engine speed (standard shaft speed) | 539 rpm | 539 rpm |
| 1000 rpm PTO | ||
| Full load (governed speed), 2300 rpm | 1110 rpm | 1110 rpm |
| At high idle (governed speed) | 1221 rpm | 1221 rpm |
| At low idle speed | 205 rpm | 314 rpm |
| At 2100 rpm engine speed (standard shaft speed) | 1014 rpm | 1014 rpm |
Belt Pulley Speeds
| Specification | Gasoline and LP Gas | Diesel |
|---|---|---|
| Full load (governed speed), 2300 rpm | 1055 rpm | 1055 rpm |
| At high idle (governed speed) | Approx. 1160 rpm | Approx. 1160 rpm |
| At low idle speed | Approx. 195 rpm | Approx. 298 rpm |
| Belt speed at 2300 rpm engine speed | 3038 ft. per min. | 3038 ft. per min. |
| Pulley diameter | 11 in. | 11 in. |
| Pulley face | 7-1/2 in. | 7-1/2 in. |
Capacities
U.S. measure, approximate.
| Component | Gasoline and LP Gas | Diesel |
|---|---|---|
| Belt pulley housing (initial fill only) | 2 qt. | 2 qt. |
| Cooling system, gasoline or diesel | 20-1/2 qt. | 23-1/2 qt. |
| Cooling system, LP gas | 21 qt. | — |
| Fuel tank, gasoline or diesel | 33 gal. | 33 gal. |
| Fuel tank, LP gas | 39 gal.1 | — |
| Crankcase pan (with filter change) | 9 qt. | 12 qt. |
| Differential housing (All-Wheel Drive tractor) | 10 qt. | 10 qt. |
| Transmission and differential case | Approx. 17 gal. | Approx. 17 gal. |
| Rear axle carrier (each) | 6 qt. | 6 qt. |
| Hi-Clear housing (each) | 4-1/2 qt. | 4-1/2 qt. |
Electrical System
| Specification | Gasoline and LP Gas | Diesel |
|---|---|---|
| System voltage | 12 volt negative ground | 12 volt negative ground |
| Battery size | One 12 volt | Two 6 volt |
| Alternator-generator, Delco Remy | 55 amp. | 55 amp. |
| Voltage regulator, Delco-Remy2 | 2 unit | 2 unit |
| Cranking motor, Delco-Remy | Positive engagement, push button controlled | Positive engagement, push button controlled |
| Light switch | 4 position | 4 position |
| Lamps, all glass sealed beam units | 12 volt | 12 volt |
| Fuse (cartridge type) | 3AG-20 | 3AG-20 |
Lamps and Bulbs
| Item | Lamp or Bulb No. | IH Part No. | Assembly No. |
|---|---|---|---|
| Sealed beam lamps, all 12 volt | |||
| Headlights (Farmall tractors) | #4419 | 371 443 R91 | 387 727 R91 |
| Headlights (International tractors) | #4411 | 373 662 R91 | 387 730 R91 |
| Headlights (deluxe fender, outer) | #4411 | 373 662 R91 | 388 945 R91 |
| Floodlights (deluxe fender, inner) | #4406 | 390 756 R91 | 388 946 R91 |
| Rear light (combination rear light and taillight) | #4603 | 371 461 R91 | 387 729 R91 |
| Bulbs | |||
| Taillight (combination rear light and taillight) | #1003 | 455 490 | 387 729 R91 |
| Warning light | #1156 | 9 417 866 | 394 129 R91 |
| Tellites | #257 | 9 412 348 | — |
| Instrument lights | #1895 | 9 417 863 | — |
| Shift quadrant control light | #1155 | 9 417 865 | 397 946 R1 |
Clutch and Brakes
| Specification | Farmall | Farmall Hi-Clear | International |
|---|---|---|---|
| Clutch, single-plate dry-disc spring-loaded | 12 in. | 12 in. | 12 in. |
| Foot brakes | Hydraulic, disc type, operated either individually or interlocked | ||
Tires and Tread
| Specification | Farmall | Farmall Hi-Clear | International |
|---|---|---|---|
| Front wheels, pneumatic tire size | 6.50-163 | 6.00-203 | 7.50-203 |
| Front tire, All-Wheel Drive tractor | 11.2-243 | — | 11.2-243 |
| Rear wheels, pneumatic tire size | 16.9-343 | 15.5-383 | 18.4-343 |
| Tread, front, tricycle type tractor | 8 and 16 in. | — | — |
| Tread, front, adjustable wide front axle | 50 to 74 in., 56 to 80 in., or 114 and 120 in. (three different axles) | 64 to 84 in. | — |
| Tread, front, adjustable front axle | — | — | 56, 69 and 80 in. |
| Tread, front, fixed front axle | — | — | 53 in. |
| Tread, front, All-Wheel Drive, concave turned in | 67 in. | — | 67 in. |
| Tread, front, All-Wheel Drive, concave turned out | 75 in. | — | 75 in. |
| Tread, rear, double-beaded rims, concave turned in | 60 to 86 in. | 68 to 87 in. | 60 to 72 in. |
| Tread, rear, double-beaded rims, concave turned out | 62 to 94 in. | 86 to 96 in. | 72 to 84 in. |
| Tread, rear, power-adjusted wheels | 56 to 96 in. (with 38-inch tires) | — | 70 to 76 in. |
| Wheelbase | 101 in.4 | 106 in. | 92 in. |
| Wheelbase, All-Wheel Drive tractor | 99 in. | — | 91 in. |
General Dimensions
With three-point hitch and swinging drawbar.
| Dimension | Farmall | Farmall Hi-Clear | International |
|---|---|---|---|
| Length over-all | 164 in. | 166 in. | 151 in. |
| Length over-all, All-Wheel Drive tractor | 163 in. | — | 159 in. |
| Width over-all, minimum (to outside edge of rear axle) | 92 in. | 98 in. | 80 in. |
| Height over-all (to top of steering wheel) | 82 in. | 94 in. | 83 in. |
| Ground clearance under front axle | 21 in. | 34 in. | 22 in. |
| Ground clearance under front axle, All-Wheel Drive | 13 in. | — | 13 in. |
| Ground clearance under drawbar | 11 in. | 25 in. | 12 in. |
| Ground clearance under rear frame (drawbar removed) | 16 in. | 29 in. | 18 in. |
Drawbar and PTO Dimensions
| Dimension | Farmall | Farmall Hi-Clear | International |
|---|---|---|---|
| Drawbar height above ground | 15 in. | 27-3/4 in. | 11, 14, 16 in. |
| Drawbar lateral swing | 20 in. | — | 29 in. |
| Drawbar hitch hole to end of PTO shaft, horizontal, 540 rpm | 14 in. | 2-1/8 in.5 | 14 in. |
| Drawbar hitch hole to end of PTO shaft, horizontal, 1000 rpm | 16 in. | 4-1/8 in.5 | 16 in. |
| Drawbar hitch hole to PTO shaft, vertical, 540 rpm | 7 in. | 7 in. | 7 in. |
| Drawbar hitch hole to PTO shaft, vertical, 1000 rpm | 12 in. | 12 in. | 12 in. |
| PTO shaft above ground, 540 rpm | 22 in. | 35 in.5 | 24 in. |
| PTO shaft above ground, 1000 rpm | 27 in. | 39-3/4 in.5 | 29 in. |
| Minimum turning radius, brake applied, wide axle | 11 ft. | 13 ft. | 11 ft. |
| Minimum turning radius, All-Wheel Drive, brake applied | 17 ft. | — | 16 in.6 |
Turning radii are quoted with the wheels in minimum tread.
Shipping Weights
Approximate.7
| Engine | Farmall | Farmall Hi-Clear | International |
|---|---|---|---|
| Gasoline | 8070 lbs. | 8820 lbs. | 8300 lbs. |
| LP Gas | 8250 lbs. | 9000 lbs. | 8480 lbs. |
| Diesel | 8350 lbs. | 9130 lbs. | 8600 lbs. |
Ground Speeds, Farmall Tractors
Miles per hour on 16.9-34 R-1 tires, with no allowance for tire slippage. TA is the Torque Amplifier range.8
| Gear | Range | 2300 rpm, forward low | 2300 rpm, forward high | 2300 rpm, reverse | 2100 rpm, forward low | 2100 rpm, forward high | 2100 rpm, reverse |
|---|---|---|---|---|---|---|---|
| 1st | Normal | 1-3/4 | 6 | 3 | 1-1/2 | 5-1/2 | 2-3/4 |
| 1st | TA | 1-3/8 | 4-5/8 | 2-1/4 | 1-1/4 | 4-1/4 | 2 |
| 2nd | Normal | 2-1/4 | 7-3/4 | 3-3/4 | 2 | 7-1/4 | 3-1/2 |
| 2nd | TA | 1-3/4 | 6 | 3 | 1-1/2 | 5-1/2 | 2-3/4 |
| 3rd | Normal | 4 | 13-1/2 | 6-3/4 | 3-1/2 | 12-1/2 | 6 |
| 3rd | TA | 3 | 10-1/2 | 5-1/4 | 2-3/4 | 9-3/4 | 4-3/4 |
| 4th | Normal | 5-1/4 | 18 | 9 | 4-3/4 | 16-1/2 | 8 |
| 4th | TA | 4 | 14 | 7 | 3-3/4 | 13 | 6-1/4 |
Ground speeds with 15.5-38 R-1 tires are 2 percent greater; with 18.4-34 R-1 tires, 5 percent greater.
Ground Speeds, Farmall Hi-Clear Tractors
Miles per hour at 2300 rpm engine speed on 15.5-38 R-2 tires, with no allowance for tire slippage.8
| Gear | Range | Forward low | Forward high | Reverse |
|---|---|---|---|---|
| 1st | Normal | 1-1/2 | 4-3/4 | 2-3/8 |
| 1st | TA | 1 | 3-3/4 | 1-7/8 |
| 2nd | Normal | 1-3/4 | 6-1/2 | 3-1/4 |
| 2nd | TA | 1-1/2 | 5 | 2-1/2 |
| 3rd | Normal | 3-1/4 | 11 | 5-1/2 |
| 3rd | TA | 2-1/2 | 8-3/4 | 4-1/4 |
| 4th | Normal | 4-1/4 | 14-3/4 | 7-1/4 |
| 4th | TA | 3-1/4 | 11-1/2 | 5-5/8 |
Ground Speeds, International Tractors
Miles per hour on 18.4-34 R-1 tires, with no allowance for tire slippage.8
| Gear | Range | 2300 rpm, forward low | 2300 rpm, forward high | 2300 rpm, reverse | 2100 rpm, forward low | 2100 rpm, forward high | 2100 rpm, reverse |
|---|---|---|---|---|---|---|---|
| 1st | Normal | 1-3/4 | 6-1/4 | 3 | 1-1/2 | 5-3/4 | 2-3/4 |
| 1st | TA | 1-1/2 | 4-3/4 | 2-1/2 | 1-1/4 | 4-1/2 | 2-1/4 |
| 2nd | Normal | 2-1/4 | 8-1/4 | 4 | 2-1/4 | 7-1/2 | 3-3/4 |
| 2nd | TA | 1-3/4 | 6-1/2 | 3-1/4 | 1-3/4 | 5-3/4 | 2-3/4 |
| 3rd | Normal | 4 | 14-1/4 | 7 | 3-3/4 | 13 | 6-1/2 |
| 3rd | TA | 3-1/4 | 11 | 5-1/2 | 3 | 10-1/4 | 5 |
| 4th | Normal | 5-1/2 | 19 | 9-1/4 | 5 | 17-1/4 | 8-1/2 |
| 4th | TA | 4-1/4 | 14-3/4 | 7-1/4 | 4 | 13-1/2 | 6-3/4 |
Ground speeds with 18.4-30 tires are approximately 6 percent less.
Notes:
1 The manual marks the LP gas fuel tank capacity as being measured at 80 percent outage level, which is the normal fill limit for a liquefied petroleum gas tank rather than its physical volume.
2 The manual prints “regualtor”; spelling normalised.
3 The manual marks each of these sizes to indicate that other pneumatic tire sizes were available.
4 The manual marks this figure as applying to the tricycle type tractor.
5 The manual notes that Farmall Hi-Clear tractors have standard power take-off shafts but do not conform fully to ASAE standards, because of their high clearance construction. The horizontal drawbar-to-shaft figures in particular are much shorter than on the other two tractors.
6 Reproduced as printed, but the unit is wrong. This row gives minimum turning radius, and the Farmall All-Wheel Drive figure alongside it is 17 feet. Sixteen inches is not a turning radius for an 8,600 lb. tractor. The intended figure is almost certainly 16 feet.
7 The manual qualifies these weights carefully. They are with pneumatic tires as listed above, three-point hitch, wide front axle, swinging drawbar, independent power take-off, torque amplifier, two auxiliary valves, deluxe seat, fenders and liquid in the cooling system, but without fuel, front or rear weights, or ballast in the tires. Farmall 756 Hi-Clear weights are quoted without independent power take-off. International 756 weights are with a U-type drawbar and swinging drawbar instead of a three-point hitch, and one auxiliary valve instead of two. Add approximately 900 lbs. for a tractor with All-Wheel Drive and 11.2-24 R1 tires.
8 Ground speeds are printed as fractions in the original and are reproduced that way here rather than converted to decimals. The two engine-speed columns exist because the 540 and 1000 rpm power take-off shafts reach their standard speeds at 2100 rpm engine speed, not at the rated 2300 rpm.
The manual states that specifications are subject to change without notice. Verify against your tractor's serial number before ordering parts or setting clearances.
All specifications transcribed from the specifications section of the International 756 Tractors operator's manual, form 1 082 649 R2, originally published by International Harvester Company.
Need the complete International 756 operator's manual?
The operator's manual covers operation, maintenance and lubrication for the Farmall 756, Farmall 756 Hi-Clear and International 756 in gasoline, LP gas and diesel form, and includes the specification section reproduced above.
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