Iseki TU1400-TU1601: All Specifications per Model
Iseki TU1400-TU1601: Technical Specifications
Below are the complete technical specifications of the Iseki TU-series mini tractors, per model. All data comes directly from the original Iseki factory manuals of the 00 series (TU1400/1500/1600) and the 01 series (TU1401/1501/1601).
Suitable for the entire series: Iseki TU1400, TU1400F, TU1500, TU1500F, TU1600, TU1600F, TU1401, TU1401F, TU1501, TU1501F, TU1601, TU1601F.
Engine
| Model | Engine code | Displacement | Bore x stroke | Power | Torque |
|---|---|---|---|---|---|
| TU1400 / TU1401 | Mitsubishi K3A | 776 cc | 65 x 78 mm | 14 hp / 2600 rpm | 4.2 kgm / 1600 rpm |
| TU1500 / TU1501 | Mitsubishi K3B | 849 cc | 68 x 78 mm | 14.9 hp / 2600 rpm | 4.8 kgm / 1600 rpm |
| TU1600 / TU1601 | Mitsubishi K3C | 900 cc | 70 x 78 mm | 16.5 hp / 2600 rpm | 5.3 kgm / 1600 rpm |
All engines are 3-cylinder, water-cooled 4-stroke diesel engines running on JIS 2/3 diesel fuel, with electric start and glow plug preheating. The engine code is identical per cylinder class between the 00 and 01 series.
Dimensions and Weight
| Model | Length | Width | Height | Wheelbase | Weight (2WD/4WD) |
|---|---|---|---|---|---|
| TU1400 | 2080 mm | 980 mm | 1680 mm | 1240 mm | 490 / 520 kg |
| TU1401 | 2080 mm (2105 mm K version) | 980 mm (995 mm K version) | 1680 mm (1690 mm K version) | 1240 mm | 510 / 540 kg (530/555 kg K version) |
| TU1500 | 2130 mm | 1040 mm | 1700 mm | 1240 mm | 515 / 555 kg |
| TU1501 | 2130 mm | 1040 mm | 1700 mm | 1240 mm | 525 / 560 kg |
| TU1600 | 2130 mm | 1040 mm | 1700 mm | 1280 mm | 530 / 560 kg |
| TU1601 | 2130 mm | 1040 mm | 1700 mm | 1280 mm | 530 / 565 kg |
Tires and Track Width
| Model | Front tire | Rear tire | Front track | Rear track |
|---|---|---|---|---|
| TU1400 | 4.50-10 (2WD) / 5-12 (4WD) | 7-16-4PR | 700 / 770 mm (fixed) | not specified as adjustable |
| TU1401 | 4.50-10-2PR (2WD) / 5-12-4PR (4WD) | 7-16-4PR (2WD) / 8-16-4PR (4WD) | 700 or 800 mm (2 positions) | 790 or 920 mm (2 positions) |
| TU1500 | 4.50-10 (2WD) / 500-12 (4WD) | 8-18-4PR | 700 / 770 mm (fixed) | 800–912 mm (infinitely adjustable) |
| TU1501 | 4.50-10-2PR (2WD) / 5.00-12-4PR (4WD) | 8-18-4PR | 700 or 800 mm (2 positions) | 800 or 910 mm (2 positions) |
| TU1600 | 4.00-12 (2WD) / 500-12S (4WD) | 8-18-4PR | 700 / 770 mm (fixed) | 800–912 mm (infinitely adjustable) |
| TU1601 | 4.00-12-4PR (2WD) / 5.00-12S-4PR (4WD) | 8-18-4PR | 700 or 800 mm (2 positions) | 800 or 910 mm (2 positions) |
Standard tire pressure: TU1400/1401 front 1.4 kg/cm² (2WD) / 2.2 (4WD), rear 1.8. TU1500/1501 front 1.4 (2WD) / 2.0 (4WD), rear 1.6. TU1600/1601 front 3.25 (2WD, as stated in the factory manual) / 2.0 (4WD), rear 1.6. Note: when using a front loader with load on the front axle, the front tire pressure should be 1.5x the standard value.
Transmission and Speed
| Model | Type | Gears | Forward speed | Reverse speed |
|---|---|---|---|---|
| TU1400 | Selective sliding | 6 forward, 2 reverse | 1.1–12.3 km/h (2WD) / 1.2–13.6 km/h (4WD) | 1.5 / 6.3 km/h (2WD) — 1.7 / 7.0 km/h (4WD) |
| TU1401 | Constant mesh + selective (combination) | 6 forward, 2 reverse | 1.13–11.40 km/h | 1.53 / 6.30 km/h |
| TU1500 / TU1600 | Selective sliding | 6 forward, 2 reverse | 1.2–13.6 km/h | 1.7 / 7.0 km/h |
| TU1501 / TU1601 | Constant mesh + selective (combination) | 6 forward, 2 reverse | 1.25–12.60 km/h | 1.69 / 6.96 km/h |
Other drivetrain features: dry single-plate diaphragm clutch, mechanical internal drum brake, differential with lock (4-pinion bevel gear), ball screw steering mechanism. Minimum turning radius (with brake): 1.83 m (TU1401), 1.89 m (TU1501/TU1601) — this data is not listed in the factory manual for the 00 series.
Hydraulics and PTO
| Component | Specification |
|---|---|
| Lift system | Position control, 2P rotary coupling |
| Pump capacity | 11 l/min (00 series, factory spec) |
| PTO speeds | 513 / 759 / 1229 rpm (3 settings, identical across all models) |
| PTO shaft diameter | 35 mm (JIS standard) |
Fluids
| Fluid | Capacity | Specification |
|---|---|---|
| Engine oil | 3 liters | SAE 10W-30, quality grade CC or higher |
| Transmission/mission oil | 12 liters | Gear oil #80, GL-4 or higher |
| Coolant | 4.7 liters | Clean water + long-life coolant (LLC) |
| Front axle oil (4WD only) | 2.5 liters | Gear oil #80 or #90 |
| Fuel tank | 16.5 liters | Diesel fuel JIS 2 or 3 |
These fluid capacities and specifications are identical between the 00 and 01 series.
Tip: always note the exact engine code (K3A, K3B, or K3C) from the nameplate when purchasing. This determines which head gasket, pistons, and cylinder head-related parts fit — the three engines each have a different bore and are not interchangeable with one another.
