1. Introduction
Thank you for choosing the Wiltec 4kW 48000 l/h Gasoline Wastewater Pump. This powerful and independent pump is designed for efficient drainage and irrigation tasks, especially in locations without access to electrical power. Its robust 4-stroke engine delivers a high flow rate of 48,000 liters per hour, making it suitable for emptying ponds, flooded cellars, trenches, and for general garden or agricultural irrigation. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your pump.
2. Safety Instructions
Always observe the following safety precautions to prevent personal injury or damage to the equipment.
- Read the Manual: Familiarize yourself with all instructions before operating the pump.
- Fuel Handling: Gasoline is highly flammable. Refuel in a well-ventilated area with the engine off and cool. Do not smoke or allow open flames near the pump.
- Exhaust Fumes: The engine produces carbon monoxide, a colorless and odorless gas that can be fatal. Operate the pump only in well-ventilated outdoor areas. Never operate indoors.
- Hot Surfaces: The engine and exhaust system become very hot during operation and remain hot for some time after shutdown. Avoid contact to prevent burns.
- Moving Parts: Keep hands, feet, and clothing away from moving parts such as the recoil starter and fan.
- Eye Protection: Always wear appropriate eye protection when operating or maintaining the pump.
- Stable Surface: Operate the pump on a firm, level surface to prevent tipping.
- Electrical Safety: Although gasoline-powered, ensure no electrical components are exposed to water.
- Children and Pets: Keep children and pets away from the operating area.
- Emergency Stop: Know how to stop the engine quickly in an emergency.
3. Product Overview
3.1 Components
The Wiltec Gasoline Wastewater Pump consists of a robust 4-stroke engine mounted on a sturdy frame, connected to a high-capacity pump housing. Key components include the fuel tank, recoil starter, air filter, pump inlet and outlet, and various controls.
Figure 1: Overall view of the Wiltec 4kW 48000 l/h Gasoline Wastewater Pump, showing its robust black frame and engine assembly.
3.2 Specifications
| Feature | Specification |
|---|---|
| Brand | WilTec |
| Model Number | 64767 |
| Engine Type | 4-stroke, Gasoline |
| Engine Power | 4 kW |
| Max Engine Speed | 3600 rpm |
| Max Flow Rate | 48,000 l/h (48 m³/h) |
| Max Lift Height | 30 m |
| Max Suction Depth | 8 m |
| Inlet/Outlet Connection | 80 mm (3 inches) |
| Material | Aluminum (pump housing) |
| Color | Black (frame), Silver (pump) |
| Dimensions (approx.) | 520 mm (L) x 370 mm (W) x 415 mm (H) |
Figure 2: Side view of the pump with approximate dimensions: 370 mm width and 415 mm height.
4. Setup
4.1 Unpacking and Inspection
- Carefully remove the pump and all accessories from the packaging.
- Inspect for any shipping damage. Contact your dealer immediately if damage is found.
- Ensure all components listed in the packing list are present.
Figure 3: Included accessories: two intake filters and several hose clamps for secure connections.
4.2 Fuel and Oil Preparation
IMPORTANT: The pump is shipped without engine oil or gasoline. You MUST add engine oil before the first start-up. Failure to do so will cause severe engine damage and void the warranty.
- Add Engine Oil: Locate the oil filler cap/dipstick on the engine. Fill with appropriate 4-stroke engine oil (refer to engine manual for specific type and quantity, typically SAE 10W-30 or 10W-40). Do not overfill.
- Add Gasoline: Fill the fuel tank with fresh, unleaded gasoline. Do not overfill. Ensure the fuel cap is securely tightened.
4.3 Hose Connections
- Suction Hose: Connect a reinforced suction hose (minimum 80mm / 3 inches diameter) to the pump's inlet. Ensure an airtight seal to prevent air leaks, which can reduce pumping efficiency. Use the provided clamps.
- Discharge Hose: Connect a discharge hose (minimum 80mm / 3 inches diameter) to the pump's outlet. Secure with clamps.
- Foot Valve/Strainer: Attach the included foot valve/strainer to the end of the suction hose to prevent debris from entering the pump and to maintain prime.
Figure 4: Close-up of the pump's inlet and outlet connections, with various hose adapters (50mm and 75mm) and sealing rings shown for different hose sizes.
4.4 Priming the Pump
Before starting, the pump housing must be filled with water to create a vacuum for suction.
- Remove the priming cap located on top of the pump housing.
- Slowly fill the pump housing with clean water until it overflows.
- Replace and securely tighten the priming cap.
5. Operating Instructions
5.1 Starting the Engine
Figure 5: Side view of the pump's engine, highlighting the fuel cap, recoil starter, and engine controls.
- Ensure the pump is on a stable, level surface and all hoses are securely connected.
- Open the fuel valve (usually a lever below the fuel tank).
- Move the choke lever to the 'CHOKE' position (for cold starts).
- Set the engine switch to 'ON'.
- Pull the recoil starter handle slowly until resistance is felt, then pull firmly and quickly. Do not let the rope snap back.
- Once the engine starts, gradually move the choke lever to the 'RUN' position.
- Allow the engine to warm up for a few minutes before engaging the pump.
5.2 Pumping Operation
- After the engine has warmed up, the pump will begin to draw water.
- Monitor the water flow and ensure there are no leaks in the connections.
- Adjust the engine speed as needed for desired flow rate, but avoid running at maximum RPM for extended periods if not necessary.
5.3 Stopping the Engine
- Reduce the engine speed to idle.
- Move the engine switch to the 'OFF' position.
- Close the fuel valve.
6. Maintenance
Regular maintenance ensures the longevity and reliable performance of your pump. Always ensure the engine is off and cool before performing any maintenance.
6.1 Routine Checks (Before Each Use)
- Check engine oil level and top up if necessary.
- Inspect fuel level.
- Check air filter for cleanliness.
- Inspect hoses and connections for wear or leaks.
6.2 Cleaning
- Clean the exterior of the pump and engine after each use, especially if used with dirty water.
- Remove any debris from the foot valve/strainer.
- Periodically clean or replace the air filter (refer to engine manual).
Figure 6: Top-down view of the engine, showing the air filter housing.
6.3 Storage
- For long-term storage, drain the fuel tank and carburetor to prevent fuel degradation.
- Drain all water from the pump housing and hoses to prevent freezing damage.
- Store the pump in a clean, dry, and well-ventilated area.
7. Troubleshooting
This section addresses common issues you might encounter with your pump.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine does not start | No fuel Engine switch OFF Choke incorrect No engine oil Spark plug issue | Add fuel Turn switch to ON Adjust choke Add oil (CRITICAL) Check/clean/replace spark plug |
| Pump does not prime or low flow | Pump not primed Air leak in suction hose Foot valve clogged Suction lift too high | Fill pump housing with water Check all suction connections for airtight seal Clean foot valve/strainer Reduce suction height |
| Engine runs, but no water flow | Pump not primed Suction hose kinked or blocked Foot valve clogged | Prime the pump Inspect and clear suction hose Clean foot valve/strainer |
| Excessive vibration or noise | Loose components Pump cavitation (air in water) Debris in pump impeller | Check and tighten all bolts Ensure pump is fully primed and suction is clear Inspect and clear pump housing (engine off) |
8. Warranty and Support
Your Wiltec pump is covered by a standard warranty. Please refer to your purchase documentation for specific terms and conditions. In case of issues or for technical support, please contact the seller:
Seller: Wiltec Wildanger Technik GmbH
For returns, a 30-day return policy typically applies from the date of purchase. Please retain your proof of purchase for all warranty and support inquiries.