International Harvester
686
Farm tractor · 1976–1980 · 73 hp
International Harvester686
The International Harvester 686 is a farm tractor manufactured from 1976 to 1980. It features a International Harvester D310 engine, and two-post fixed steering. The transmission is a two-speed power shift type with 10 forward and 2 reverse.
Engine
| Engine | International Harvester D310 |
|---|---|
| Fuel Type | diesel |
| Cylinders | 6 |
| Cooling | liquid-cooled |
| Displacement | 310 ci (5.1 L) |
| Bore | 3.88 in (98 mm) |
| Stroke | 4.38 in (111 mm) |
| Power PTO | 66.36 hp (49.5 kW) |
| Power Drawbar | 58.01 hp (43.3 kW) |
| Starter Volts | 12 |
| Manufacturer | International Harvester |
| Rated | 2,000 RPM |
Transmission
| Transmission Type | two-speed power shift |
|---|---|
| Transmission Model | Torque Amplifier |
| Gears | 10 forward and 2 reverse |
| Oil Capacity | 64 qts (60.6 L) |
| Available Options | 10-speed two-speed power shift |
Hydraulics
| Type | open center |
|---|---|
| Total Flow | 12 gpm (45.4 lpm) |
| System Capacity | 16 gal (60.6 L) |
PTO
| Rear Type | independent |
|---|
Hitch
| Rear Type | II |
|---|
Dimensions
| Length | 162 in (411 cm) |
|---|---|
| Width | 89.4 in (227 cm) |
| Height | 105 in (266 cm) |
| Wheelbase | 103 in (261 cm) |
| Front Tread | 58 in (147 cm) |
| Rear Tread | 56 in (142 cm) |
Weight
| Shipping | 7,770 lbs (3,524 kg) |
|---|---|
| Ballasted | 10,340 lbs (4,690 kg) |
Tires & Tracks
| Front Ag | 7.50-16 |
|---|---|
| Rear Ag | 15.5-38 |
Fuel
| Capacity | 31 gal (117.3 L) |
|---|
Steering
| Type | two-post fixed |
|---|
Compatible Implements
| Model | Type | Width | Min HP |
|---|---|---|---|
| Land Pride RCF2760 | Rotary Cutters | 60" | 35 hp |
| BEFCO BRC-172 | Rotary Cutters | 72" | 35 hp |
| Land Pride RCF2772 | Rotary Cutters | 72" | 35 hp |
| BEFCO RMD-360 | Rotary Cutters | 60" | 35 hp |
| BEFCO BRC-272 | Rotary Cutters | 72" | 35 hp |
| Bush Hog BH310-2 | Rotary Cutters | 60" | 35 hp |
| Land Pride RCD1884 | Rotary Cutters | 84" | 35 hp |
| BEFCO RMD-372 | Rotary Cutters | 72" | 40 hp |
| Land Pride RCF2696 | Rotary Cutters | 96" | 40 hp |
| Land Pride RCF2084 | Rotary Cutters | 84" | 45 hp |
| Land Pride RCR1884 | Rotary Cutters | 84" | 45 hp |
| Bush Hog BH310 variant 2 | Rotary Cutters | 72" | 45 hp |
| Land Pride RCR2596 - 3 PT | Rotary Cutters | 96" | 50 hp |
| Land Pride RCF3096 - 3PT | Rotary Cutters | 96" | 50 hp |
| Bush Hog BH210-3 variant 3 | Rotary Cutters | 84" | 50 hp |
| Land Pride RCF3696 - 3PT | Rotary Cutters | 96" | 50 hp |
| Land Pride RCFM3696 - 3PT | Rotary Cutters | 96" | 50 hp |
| BEFCO RHD-472 | Rotary Cutters | 72" | 50 hp |
| Bush Hog BH310 variant 3 | Rotary Cutters | 84" | 55 hp |
| Land Pride RCF3672 | Rotary Cutters | 72" | 60 hp |
| Land Pride RCFM3610 - 3PT | Rotary Cutters | 120" | 60 hp |
| Land Pride RCFM3010 - 3PT | Rotary Cutters | 120" | 60 hp |
| Land Pride RCF3010 - 3PT | Rotary Cutters | 120" | 60 hp |
| Land Pride RCF3610 - 3PT | Rotary Cutters | 120" | 60 hp |
| BEFCO RHD-484 | Rotary Cutters | 84" | 60 hp |
| Bush Hog BH410 variant 1 | Rotary Cutters | 72" | 60 hp |
| Land Pride RCF2784 - 3PT | Rotary Cutters | 84" | 60 hp |
| Land Pride RCR2510 - 3 PT | Rotary Cutters | 120" | 60 hp |
Checked: 3-point hitch category, PTO horsepower. Not checked: PTO speed (540/1000), hydraulic flow, 3-point lift capacity, rear remotes, ballast.
These implements meet this tractor's hitch and PTO-HP requirements — this is not a full compatibility guarantee. Confirm the remaining specs with your dealer before purchasing.
Nebraska Tests
NTTLTest #1336
March 26 to April 16, 1980 Temperature °F (°C) Fuel Consumption Power Crank Barometer Air shaft Air HpNebraska Tractor Test
PTO Power
66.36HP
Sound
92dB(A)
NTTLTest #1336
March 26 to April 16, 1980 Temperature °F (°C) Fuel Consumption Power Crank Barometer Air shaft Air HpNebraska Tractor Test
PTO Power
66.36HP
Sound
92dB(A)