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International Harvester 574 vs International Harvester 686
Verdict: International Harvester 574 vs International Harvester 686
The International Harvester 574 and the International Harvester 686 are both tractors — here is how they stack up on the figures that matter. International Harvester 574 leads on rated power with 68 hp against 66 hp. International Harvester 686 is the lighter machine (3,524 kg vs 4,660 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 1970). In short: choose the International Harvester 574 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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Fit & specs
International Harvester
62
Fit score
Best match
Clear
International Harvester
62
Fit score
Best match
Clear
Rated power
68 hp
66 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
International HarvesterReference
International HarvesterReference
With 16.9x30 rear tires.Reference
With 15.5-38 rear tires.Reference
Factories
Louisville, Kentucky, USAReference
—
Total built
—
6,000Reference
Engine
Fuel tank
76.8 LReference
—
Engine (gross)
50.7 kWReference
—
Engine (net)
48.2 kWReference
—
Engine
50.0 kWReference
—
Drawbar (claimed)
33.6 kWReference
—
Drawbar (tested)
34.2 kWReference
43.3 kWReference
Displacement
3.9 LReference
4.8 LReference
Bore/Stroke
98 x 129 mmReference
95 x 112 mmReference
Power
50.0 kWReference
—
Compression
12:1Reference
—
Rated RPM
2400 (hydro)Reference
2000Reference
Starter volts
12Reference
12Reference
Power (net)
48.2 kWReference
—
Power (gross)
50.7 kWReference
—
Fuel system
direct injectionReference
—
Air cleaner
two stage dryReference
dryReference
Torque
250.9 NmReference
—
Torque RPM
1600Reference
—
Oil capacity
8.5 LReference
60.6 LReference
Coolant capacity
13.7 LReference
19.9 LReference
Power at rated engine speed
39.2 kWReference
49.5 kWReference
Max power
34.2 kWReference
43.0 kWReference
Idle RPM
—
900-2000Reference
Transmission
Gears
16 forward and 8 reverseReference
10 forward and 2 reverseReference
Transmission
Torque AmplifierReference
Torque AmplifierReference
PTO & Hydraulics
PTO (claimed)
38.8 kWReference
—
PTO (tested)
39.5 kWReference
49.5 kWReference
Type
two-speed power shift.Reference
two-speed power shiftReference
Pressure
172.4 barReference
—
Pump flow
45.0 lpmReference
—
Rear Type
IIReference
IIReference
Control
position and draft controlReference
—
Rear lift (at ends)
1632 kgReference
—
Rear PTO
independentReference
independentReference
Clutch
280mm dry discReference
—
Rear PTO Type
540/1000 (1.375)Reference
540 (1.375)Reference
Engine RPM
1000@2200Reference
—
Hydraulic system
—
60.6 LReference
Capacity
—
60.6 LReference
Total flow
—
45.4 lpmReference
Dimensions
Wheelbase
214 cmReference
261 cmReference
Weight
4660 to 5150 poundsReference
3524 kgReference
Front tire
6.00-16Reference
7.50-16Reference
Rear tire
11-36Reference
15.5-38Reference
Ag front
7.50-16Reference
7.50-16Reference
Ag rear
12-38Reference
15.5-38Reference
Length
340 cmReference
411 cmReference
Width
162 cmReference
227 cmReference
Height (steering wheel)
151 cmReference
—
Height (ROPS)
226 cmReference
—
Ground clearance
36 cmReference
—
Bar rear axle
69 mmReference
—
Front tread
121 to 203 cmReference
147 to 208 cmReference
Rear tread
132 to 193 cmReference
142 to 243 cmReference
Gas Shipping
2113 kgReference
—
Diesel Shipping
2227 kgReference
—
Gas Operating
2193 kgReference
—
Diesel Operating
2336 kgReference
—
Height (exhaust)
—
266 cmReference
Diesel Shipping weight
—
3524 kgReference
Ballasted weight
—
4690 kgReference
International Harvester 574 attachments
574 Serial Number Location
574 Serial Numbers
1970
504Reference
—
1971
650Reference
—
1972
3329Reference
—
1973
7074Reference
—
1974
102961Reference
—
1975
107880Reference
—
1976
111783Reference
7500Reference
1977
114195Reference
7729Reference
1978
117065Reference
9899Reference
Electrical
Charging system
alternatorReference
—
Charging amps
28Reference
—
Battery volts
12Reference
—
Attachment overview
Test results
Fuel use
13.6 l/hourReference
15.5 l/hourReference
Max pull
2923 kgReference
3634 kgReference
Speeds
Capacities
Fuel
—
117.3 LReference
686 Serial Numbers
1979
—
11417Reference
1980
—
12923Reference
Location:
—
Clutch housing on right side.Reference
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.