Compare/International Harvester 685 vs International Harvester 706

International Harvester 685 vs International Harvester 706

Verdict: International Harvester 685 vs International Harvester 706

The International Harvester 685 and the International Harvester 706 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 72 hp. International Harvester 685 is the lighter machine (6,703 kg vs 8,100 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 685 is the newer design (1981 vs 1963). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

72 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

Four gears (1-4) in two ranges (low/high) plus reverse range.Reference

The Torque Amplifier (TA) provides a hydraulically-actuted under-drive that may be shifted, on the move, with any range and speed selection in the main transmission. Using the TA does not require the clutch or stopping the tractor. With the lever in the forward position, the TA is disengaged and the transmission is in direct drive. To slow the tractor (increasing pulling power) the TA lever should be pulled smoothly and quickly to the rear, engaging the TA. To disengage the TA and return to direct-drive, the TA should be moved forward, with a slight pause at the center position of the lever.Reference

Differential lock

mechanical rearReference

—

Total built

—

4,884Reference

Drive

—

4x4 MFWD 4WD (optional)Reference

Engine

Fuel tank

112.0 LReference

—

Engine (gross)

53.5 kWReference

—

Engine (net)

51.5 kWReference

—

Displacement

3.9 LReference

4.8 LReference

Bore/Stroke

98 x 129 mmReference

95 x 112 mmReference

Power (net)

51.5 kWReference

—

Power (gross)

53.5 kWReference

—

Fuel system

direct injectionReference

—

Rated RPM

2300Reference

Torque

244.1 NmReference

—

Torque RPM

1600Reference

—

Starter

electricReference

—

Starter volts

12Reference

—

Drawbar (tested)

—

50.3 kWReference

Firing order

—

1-5-3-6-2-4Reference

Coolant capacity

—

19.9 LReference

Intake valve clearance

—

0.686 mmReference

Exhaust valve clearance

—

0.686 mmReference

Oil capacity

—

64.4 LReference

Sparkplug gap

—

0.381 mmReference

Point gap

—

0.508 mmReference

Compression

—

7.5:1Reference

Power at rated engine speed

—

57.1 kWReference

Max power

—

49.0 kWReference

Transmission

Type

two-speed power shiftReference

IH Fast HitchReference

Gears

16 forward and 8 reverseReference

Transmission

Torque AmplifierReference

Oil type

—

IH Hy-TranReference

PTO & Hydraulics

PTO (claimed)

47.2 kWReference

—

Pump flow

46.9 lpmReference

64.3 lpmReference

Rear Type

IIReference

II/IReference

Control

position and draft controlReference

torsion bar (optional)Reference

Rear lift

2381 kgReference

—

Rear PTO

independentReference

Clutch

hydraulic wet discReference

12-inch dry discReference

Rear PTO Type

540/1000Reference

PTO (tested)

—

57.1 kWReference

Hydraulic system

—

64.3 LReference

Capacity

—

64.3 LReference

Valves

—

1 or 2Reference

Total flow

—

90.8 lpmReference

Steering flow

—

34.1 lpmReference

Power at rated PTO speed

—

53.5 kWReference

Dimensions

Wheelbase

224 cmReference

220 cmReference

Weight

6703 to 7188 poundsReference

8100 to 9160 poundsReference

Front tire

10.00-16Reference

7.50-18Reference

Rear tire

16.9-34Reference

18.4-30Reference

Ag front

12.4-24 (4WD)Reference

11.2-24 (4WD)Reference

Ag rear

16.9-34Reference

18.4-30Reference

Length

374 cmReference

396 cmReference

Height

264 cmReference

—

2WD Weight

3040 kgReference

—

4WD Weight

3260 kgReference

—

Height (steering wheel)

—

204 cmReference

Clearance (front axle)

—

43 cmReference

Clearance (drawbar)

—

30 cmReference

Rear axle

—

82 mmReference

Front tread

—

142/175/203 cmReference

Rear tread

—

152 to 213 cmReference

Shipping

—

3792 kgReference

Operating

—

4154 kgReference

Ballasted

—

4858 kgReference

685 Serial Numbers

Location:

Serial number plate on right front of tractor frame, above the front axle.Reference

—

Electrical

Ground

negativeReference

Battery volts

12Reference

6 (diesel)Reference

Charging amps

—

32 (alternator)Reference

Batteries

—

2 (diesel)Reference

Variants

Farmall 706

—

row-cropReference

IH 706

—

standard-treadReference

IH 2706

—

industrialReference

706 Hi-Clear

—

high-cropReference

Capacities

Fuel

—

147.6 LReference

Diameter

—

27 cmReference

Width

—

261 cmReference

RPM

—

1055Reference

Speed

—

925.98 meters/minReference

706 Serial Number Location

706 Serial Numbers

1963

—

501 (IH)Reference

1964

—

1251 (IH)Reference

1965

—

3478 (IH)Reference

1966

—

4789 (IH)Reference

1967

—

5316 (IH)Reference

Test results

Fuel use

—

22.0 l/hourReference

Max pull

—

3804 kgReference

Speeds

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.