1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your AISEN Fuel Cock, Model 530039143. This fuel cock is designed for compatibility with the Matrix PG 3010-F 3 kW 6.5 HP generator. Please read this manual thoroughly before installation and use to ensure safe and efficient operation.
2. Product Overview
The AISEN Fuel Cock is a critical component for controlling fuel flow from the tank to the carburetor of your generator. It features a robust design for reliable performance.

Figure 1: Front view of the AISEN Fuel Cock, showing the fuel inlet, outlet, and control lever.
Key features include:
- Durable construction for fuel system reliability.
- Integrated fuel filter tube to prevent debris from entering the fuel line.
- Easy-to-operate lever for fuel flow control.

Figure 2: Side view illustrating the fuel filter tube extending from the bottom of the fuel cock, designed to be submerged in the fuel tank.
3. Safety Information
Always observe the following safety precautions when handling fuel and fuel system components:
- Fire Hazard: Gasoline is highly flammable. Do not smoke or allow open flames or sparks near the generator or fuel system.
- Ventilation: Work in a well-ventilated area to avoid inhaling fuel vapors.
- Eye Protection: Wear appropriate eye protection to prevent fuel splashes.
- Spills: Clean up any fuel spills immediately. Dispose of fuel-soaked rags properly.
- Engine Off: Ensure the generator engine is completely off and cool before performing any installation or maintenance.
- Fuel Drainage: Drain the fuel tank before removing the old fuel cock to prevent spills.
4. Setup and Installation
This section outlines the general steps for replacing or installing the AISEN Fuel Cock on a compatible generator, such as the Matrix PG 3010-F.
- Prepare the Generator: Ensure the generator is turned off, the engine is cool, and the spark plug wire is disconnected to prevent accidental starting.
- Drain Fuel: Place a suitable container under the fuel tank. Open the existing fuel cock (if replacing) or disconnect the fuel line to drain all fuel from the tank.
- Remove Old Fuel Cock (if applicable): Carefully unscrew the old fuel cock from the fuel tank. Be prepared for any residual fuel.
- Inspect Mounting Area: Clean the mounting surface on the fuel tank to ensure a good seal.
- Install New Fuel Cock: Thread the new AISEN Fuel Cock into the fuel tank opening. Ensure the sealing washer (if provided) is correctly seated. Tighten securely but do not overtighten to avoid damaging the threads.
- Connect Fuel Line: Attach the fuel line from the carburetor to the outlet nipple of the new fuel cock. Secure it with a hose clamp if necessary.
- Refill Fuel: Carefully refill the fuel tank with the appropriate type of gasoline. Check for any leaks around the fuel cock and fuel line connections.
- Final Check: Reconnect the spark plug wire. The generator is now ready for operation.

Figure 3: View of the fuel cock's threaded base and fuel outlet nipple, indicating connection points for installation.
5. Operating Instructions
The fuel cock controls the flow of fuel to the generator's engine. It typically has two positions:
- ON (Open): Turn the lever to the "ON" position to allow fuel to flow to the carburetor. This is the standard operating position.
- OFF (Closed): Turn the lever to the "OFF" position to stop the fuel flow. Always turn the fuel cock to "OFF" when the generator is not in use, during transport, or for maintenance.

Figure 4: Close-up of the control lever, indicating the "FUEL" marking which typically aligns with the "ON" position for fuel flow.
Refer to your generator's owner's manual for specific starting and stopping procedures.
6. Maintenance
Regular maintenance ensures the longevity and proper function of your fuel cock.
- Inspection: Periodically inspect the fuel cock and fuel lines for any signs of leaks, cracks, or damage. Replace components as needed.
- Cleaning: If fuel flow is restricted, the internal filter tube may be clogged. Drain the fuel tank, remove the fuel cock, and carefully clean the filter tube with a suitable solvent or compressed air.
- Storage: When storing the generator for extended periods, turn the fuel cock to the "OFF" position and consider draining the fuel system to prevent fuel degradation and carburetor issues.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No fuel flow to carburetor | Fuel cock in "OFF" position Clogged fuel filter tube Empty fuel tank | Turn fuel cock to "ON" Clean or replace fuel cock Refill fuel tank |
| Fuel leak from fuel cock | Loose connection Damaged sealing washer Cracked fuel cock body | Tighten connection Replace sealing washer Replace fuel cock |
| Generator runs poorly or stalls | Restricted fuel flow (partially clogged filter) | Clean or replace fuel cock |
If troubleshooting steps do not resolve the issue, consult a qualified service technician or refer to your generator's service manual.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | AISEN |
| Model Number | 530039143 |
| Compatibility | Matrix PG 3010-F 3 kW 6.5 HP Generator |
| Item Weight | 86 grams |
| Power Source Type | Fuel Powered |
| Fuel Type | Gasoline |
| Special Feature | Portable (referring to the generator it's part of) |
| Included Components | Fuel cock (as a replacement part) |
9. Warranty and Support
For information regarding warranty, replacement parts, or additional support, please refer to the AISEN Amazon store or contact your point of purchase. Specific warranty details are not provided in this manual.
You can find more AISEN parts and accessories by visiting the official AISEN store on Amazon: AISEN Amazon Store