ST1WP - Pump Lifan - Free user manual and instructions
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| Product Type | Self-priming centrifugal water pump |
| Model | ST1WP |
| Brand | Lifan |
| Power Source | Gasoline engine (4-stroke, air-cooled) |
| Engine Displacement | 196 cc |
| Max Power | 4.0 kW (5.5 HP) |
| Fuel Tank Capacity | 3.6 L |
| Flow Rate | 800 L/min (48 m³/h) |
| Total Head (Max) | 30 m |
| Suction Lift (Max) | 8 m |
| Inlet / Outlet Diameter | 50 mm (2 inches) |
| Body Material | Cast iron |
| Impeller Material | Aluminum alloy |
| Dimensions (L x W x H) | 600 x 450 x 450 mm |
| Dry Weight | 30 kg |
| Starting System | Recoil starter |
| Engine Oil Capacity | 0.6 L (SAE 10W-30) |
| Maintenance Interval | Oil change every 20 hours; air filter cleaning every 20 hours |
| Safety Features | Low oil shutdown, thermal overload protection |
| Common Spare Parts | Spark plug, air filter, fuel filter, impeller, mechanical seal |
Frequently Asked Questions - ST1WP Lifan
How do I prime the pump?
Remove the priming plug, fill the pump casing with water until it overflows, then replace the plug. Ensure the suction line is sealed. This is self-priming for lifts up to 8 m.
What type of fuel and oil should I use?
Use unleaded gasoline (87 octane or higher) and SAE 10W-30 engine oil for the 4-stroke engine. Do not mix oil with fuel.
How often should I change the engine oil?
Change the engine oil after the first 20 hours of operation, then every 50 hours or annually, whichever comes first.
Why is my pump not delivering water?
Common causes: air leak in suction line, clogged strainer, insufficient priming, or blocked impeller. Check all connections and clean the strainer.
How do I clean the strainer?
Turn off the engine, remove the strainer from the suction hose, and flush with clean water. Use a soft brush to remove debris. Reinstall securely.
What is the maximum suction lift?
The maximum suction lift is 8 meters at sea level. Performance decreases with altitude.
Can the pump run dry?
No, running the pump dry can damage the mechanical seal and impeller. Always ensure the pump is primed before starting.
How should I store the pump?
Drain all fuel and oil, clean the exterior, and store in a dry, covered area. Remove the spark plug and add a teaspoon of oil into the cylinder to prevent rust.
How do I replace the impeller?
Remove the pump casing bolts, take off the casing, and unscrew the impeller from the shaft. Install the new impeller in reverse order. Ensure the impeller rotates freely.
What is the warranty period?
Lifan provides a 1-year limited warranty against manufacturing defects. Keep your purchase receipt for service.
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USER MANUAL ST1WP Lifan
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Product information
Brand : Lifan
Model : ST1WP
Category : Pump