Compare/International Harvester 686 vs International Harvester 724

International Harvester 686 vs International Harvester 724

Verdict: International Harvester 686 vs International Harvester 724

The International Harvester 686 and the International Harvester 724 are both tractors — here is how they stack up on the figures that matter. International Harvester 724 leads on rated power with 67 hp against 66 hp. International Harvester 686 is the lighter machine (3,524 kg vs 6,262 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 686 is the newer design (1976 vs 1969). In short: choose the International Harvester 724 for outright pulling power, or the International Harvester 686 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a 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

66 hp

67 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

Total built

6,000Reference

—

With 15.5-38 rear tires.Reference

The Agriomatic S provides an additional four forward speeds selected by a right-hand power shift lever. Pushing the lever forward engages the Agriomatic range, while rearward uses the conventional range. The Agriomatic speeds are between high and low ranges, so this provides an undershift in high range and an overshift in low range. In reverse range it operates as a power shuttle.Reference

Factories

—

Saint Dizier, FranceReference

Trailer brakes

—

hydraulicReference

Engine

Drawbar (tested)

43.3 kWReference

—

Displacement

4.8 LReference

3.9 LReference

Bore/Stroke

95 x 112 mmReference

98 x 129 mmReference

Rated RPM

2000Reference

2200Reference

Starter volts

12Reference

Air cleaner

dryReference

—

Idle RPM

900-2000Reference

650-2420Reference

Oil capacity

60.6 LReference

7.9 LReference

Coolant capacity

19.9 LReference

—

Power at rated engine speed

49.5 kWReference

—

Max power

43.0 kWReference

—

Fuel tank

—

70.0 LReference

Engine

—

50.0 kWReference

Power

—

50.0 kWReference

Fuel system

—

direct injectionReference

Compression

—

16:1Reference

Torque

—

223.7 NmReference

Torque RPM

—

1600Reference

Firing order

—

1-3-4-2Reference

Intake valve clearance

—

0.254 mmReference

Exhaust valve clearance

—

0.305 mmReference

Oil change

—

200 hReference

Transmission

Torque AmplifierReference

Agriomatic SReference

Gears

10 forward and 2 reverseReference

12 forward and 4 reverseReference

PTO & Hydraulics

PTO (tested)

49.5 kWReference

—

Hydraulic system

60.6 LReference

—

Type

two-speed power shiftReference

partial power shiftReference

Capacity

60.6 LReference

—

Total flow

45.4 lpmReference

—

Rear Type

IIReference

Rear PTO

independentReference

Rear PTO Type

540 (1.375)Reference

540/1000 (1.375)Reference

Pump flow

—

28.4 lpmReference

Control

—

position and draft controlReference

Rear lift

—

2050 kgReference

Capacities

Fuel

117.3 LReference

—

Dimensions

Wheelbase

261 cmReference

212 cmReference

Weight

3524 kgReference

6262 to 6626 poundsReference

Front tire

7.50-16Reference

6.00-16Reference

Rear tire

15.5-38Reference

14-34Reference

Ag front

7.50-16Reference

7.50-18Reference

Ag rear

15.5-38Reference

Length

411 cmReference

318 cmReference

Width

227 cmReference

181 cmReference

Height (exhaust)

266 cmReference

—

Diesel Shipping weight

3524 kgReference

—

Ballasted weight

4690 kgReference

—

Front tread

147 to 208 cmReference

132 to 172 cmReference

Rear tread

142 to 243 cmReference

146 to 186 cmReference

Height

—

156 cmReference

2WD Weight

—

2840 kgReference

4WD Weight

—

3005 kgReference

Ground clearance

—

41 cmReference

686 Serial Numbers

1976

7500Reference

—

1977

7729Reference

—

1978

9899Reference

—

1979

11417Reference

—

1980

12923Reference

—

Location:

Clutch housing on right side.Reference

—

Test results

Fuel use

15.5 l/hourReference

—

Max pull

3634 kgReference

—

Speeds

Electrical

Ground

—

negativeReference

Charging system

—

generatorReference

Batteries

—

2Reference

Battery volts

—

6Reference

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.