| Model | KOSHIN SEM-52V | KOSHIN SERM-50V |
| Pump | Connection Dia | 50 mm (2″) | Suction: 50 mm (2″)Derivery: 50 mm (2″) / 25 mm (1″) |
| Connection Thread | Outer Pipe Thread BSP |
| Total Head | 50 m (164 ft) | 90 m (295 ft) |
| Delivery Volume | 500 L/min (132 USG/min) |
| Max. Suction Head | 8 m (26 ft) |
| Engine | Type | Air-cooled 4-cycle Gasoline Engine |
| Model | Air-cooled 4-cycle Gasoline EngineHi-Revolution | Mitsubishi GM 182Hi-Revolution |
| Exhaust Volume | 126 cc | 181 cc |
| Rated Output | 2.1 kW (2.8 PS) / 3600 rpm | 3.3 kW (4.5 PS) / 3600 rpm |
| Max. Output | 2.9 kW (4.0 PS) / 4800 rpm | 4.4 kW (6.0 PS) / 4800 rpm |
| Fuel | Automotive Unleaded Gasoline |
| Fuel Tank Capacity | 2.5 L (0.66 USG) | 3.5 L (0.92 USG) |
| Continuous Oparating Time | Approx. 2 hrs |
| Starting Method | Recoil Starter |
| Standard Accessories | 1 Strainer3 Hose Bands1 Hose Coupling | 1 Strainer3 Hose Bands ( 60)2 Hose Bands ( 32) |
| | |
| 1 Quick Coupling | 1 Coupling Set (50 mm) |
| | |
| 1 Engine Tool | 1 Closing Plate (50 mm) |
| | |
| | 2 Nipples (25 mm) |
| | |
| | 1 Quick Coupling |
| | |
| | 1 Engine Tool |
| Gross Weight | 28 kg (61.7 lbs) | 38 kg (84 lbs) |
| Dimensions LxWxH (mm) | 510 × 402 × 440 | 555 × 450 × 468 |
| Packing Unit | 1 |
