Iseki TU257
The Iseki TU257 is a tractor produced by Iseki. It is equipped with a 91.4 ci 1.5 L engine. The listed engine power is Diesel (listed): 24.7 hp / 18.4 kW. Transmission: 12 forward and 4 reverse. Operating weight: 1973 to 2161 pounds.
Engine Power
Diesel (listed): 24.7 hp / 18.4 kW
Fuel & Capacities
6.6 gal
25.0 L
Transmission
12 forward and 4 reverse
Operating Weight
1973 to 2161 pounds
Overview
 | 1989 - 1992
TU 7 SeriesCompact Utility tractor
TU 7 Series
Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Iseki |
Compact Utility tractor | |
Variants | |
|---|---|
TU257F | 4WD |
Iseki TU257 Engine | |
|---|---|
Isuzu 1.5L 3-cyl diesel | |
Fuel tank | 6.6 gal
25.0 L |
Engine details ...  | |
Iseki TU257 Transmission | |
|---|---|
12-speed | |
Transmission details ...  |
Iseki TU257 Power | |
|---|---|
Engine | 24.7 hp
18.4 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Open operator station |
Tractor hitch | |
|---|---|
Rear Type | JIS0 |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 (1.375) |
Engine RPM | 526@2500 |
805@2500 | |
1244@2500 | |
Dimensions & Tires | |
|---|---|
Wheelbase | 60.2 inches
152 cm |
Weight | 1973 to 2161 pounds |
Front tire | 5.00-15 |
2WD Rear tire | 11.2-24 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
Landhope 7 Series TU197 TU217 TU237 TU257 published in 1991, by Iseki | |
Landhope 197 217 237 257 (1588-913-004-0) published in 1991 |
Engine
Engine Detail — 91.4 ci / 1.5 L Diesel
Manufacturer | Isuzu E3AD1 |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 91.4 ci
1.5 L |
Bore/Stroke | 3.385x3.386 inches
86 x 86 mm |
Power | 24.7 hp
18.4 kW |
Rated RPM | 2500 |
Starter | electric |
Starter volts | 12 |
Oil capacity | 4.5 qts
4.3 L |
Coolant capacity | 7.4 qts
7.0 L |
Iseki TU257 Engine | |
|---|---|
 |
Transmission
Transmission — 12 forward and 4 reverse
Gears | 12 forward and 4 reverse |
Oil capacity | 19 qts
18.0 L |
Three gears, plus reverse, in four ranges. | |
 | |
Dimensions
Iseki TU257 Tires | |
|---|---|
2WD Standard tires (ag) | Front: 5.00-15. Rear: 11.2-24 |
4WD Standard tires (ag) | Front: 7-16. Rear: 11.2-24 |
Dimensions | |
|---|---|
Wheelbase | 60.2 inches
152 cm |
Length | 115.6 inches
293 cm |
Width | 50.8 inches
129 cm |
Height | 56.3 inches
143 cm |
2WD Weight | 1973 lbs
894 kg |
4WD Weight | 2161 lbs
980 kg |
2WD Ground clearance | 13.4 inches
34 cm |
4WD Ground clearance | 12.6 inches
32 cm |
2WD Front tread | 37/38.6 inches
93/98 cm |
4WD Front tread | 41.3 inches
104 cm |
Rear tread | 38.6 to 51.2 inches
98 to 130 cm |
Photos
Iseki Landhope TU257 tractor.
Recommended Implements & Sizing Guide
Engineering recommendations for Iseki TU257 based on its 24.7 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Iseki TU257.
Estimated Continuous Field Runtime: 5.1 hrs
Approximately 5.1 hours of continuous field operation at ~75% rated power on a full tank (6.6 gal / 25 L).
Estimated 75% Load Fuel Burn~1.3 gal/hr (4.9 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Iseki TU257 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Iseki TU257.
Converted Equivalents:
Horsepower (HP)24.7 hp
Kilowatts (kW)18.4 kW
Metric Horsepower (PS / CV)25 PS
Direct Competitor Comparison
Compare Iseki TU257 against same-era industry alternatives in the same horsepower class.
Current Model
Iseki
Iseki TU257
Engine Power:Diesel (listed): 24.7 hp / 18.4 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester Farmall
Engine Power:22.3
Production Years:1924 - 1932
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