| Model | KOSHIN SE-50X | KOSHIN SE-80X | KOSHIN SE-50EX | KOSHIN SE-80EX | KOSHIN SE-100EX |
| Pump | Connection Dia | 50 mm (2″) | 80 mm (3″) | 50 mm (2″) | 80 mm (3″) | 100 mm (4″) |
| Connection Thread | Outer Pipe Thread BSP |
| Total Head | 30 m (98 ft) | 26 m (85 ft) | 28 m (92 ft) | 28 m (92 ft) | 27 m (89 ft) |
| Delivery Volume | 600 L/min (158 USG/min) | 930 L/min (246 USG/min) | 650 L/min (172 USG/min) | 1100 L/min (290 USG/min) | 1350 L/min (356 USG/min) |
| Max. Suction Head | 8 m (26 ft) |
| Engine | Type | Forced Air-cooled 4-stroke Gasoline Engine |
| Model | Subaru EY15-3D | Subaru EY20-3D | Subaru EX16 | Subaru EX17 | Subaru EX27 |
| Exhaust Volume | 143 cc | 183 cc | 169 cc | 169 cc | 265 cc |
| Rated Output | 2.0 kW (2.7 PS) / 3600 rpm | 2.6 kW (3.5 PS) / 3600 rpm | 2.2 kW (3.0 PS) / 3600 rpm | 2.9 kW (4.0 PS) / 3600 rpm | 5.1 kW (7.0 PS) / 3600 rpm |
| Max. Output | 2.6 kW (3.5 PS) / 4000 rpm | 3.7 kW (5.0 PS) / 4000 rpm | 3.2 kW (4.3 PS) / 4000 rpm | 4.2 kW (5.7 PS) / 4000 rpm | 6.6 kW (9.0 PS) / 4000 rpm |
| Fuel | Automotive Unleaded Gasoline |
| Fuel Tank Capacity | 2.8 L (0.74 USG) | 3.8 L (1.00 USG) | 3.2 L (0.84 USG) | 3.2 L (0.84 USG) | 5.6 L (1.48 USG) |
| Continuous Oparating Time | Approx. 2.8 hrs | Approx. 3 hrs | Approx. 2.5 hrs | Approx. 2.1 hrs |
| Starting Method | Recoil Starter |
| Standard Accessories | 1 Strainer, 2 Hose Couplings, 3 Hose Bands, 1 Engine Tool Set |
| Gross Weight | 23 kg (50.7 lbs) | 35 kg (77.1 lbs) | 27 kg (59.5 lbs) | 33 kg (72.7 lbs) | 57 kg (125 lbs) |
| Dimensions LxWxH (mm) | 484 × 330 × 420 | 525 × 370 × 472 | 504 × 401 × 411 | 530 × 405 × 465 | 670 × 477 × 669 |
| Packing Unit | 1 |
