1. Product Overview
This MOTO1988 Fuel Petcock Valve is a replacement component designed for various Honda ATV and FourTrax models. It controls the fuel flow from the fuel tank to the carburetor, featuring ON, OFF, and RESERVE positions. The assembly includes the petcock valve, a fuel filter, and fuel lines, ensuring reliable fuel delivery and filtration.
Image 1.1: Overview of the MOTO1988 Fuel Petcock Valve assembly, including the valve, fuel filter, and fuel lines.
Key Features:
- Water-Resistant: Designed to withstand moisture exposure.
- Rugged and Durable: Constructed for long-lasting performance in demanding conditions.
- Corrosion Resistant: Materials chosen to resist rust and degradation.
- Safe and Reliable: Engineered for consistent and secure fuel control.
Image 1.2: Graphic illustrating the key performance features of the fuel petcock valve.
2. Compatible Models
This fuel petcock valve is designed as a direct replacement for OEM Part Number 16950-HC4-840 and is compatible with the following Honda models:
- ATC250SX: 1985-1987
- ATC350X: 1985-1986
- Big Red 250 ATC250ES: 1985-1987
- FourTrax 200 TRX200SX: 1986-1988
- FourTrax 250: 1985-1992
- FourTrax 300 TRX300 TRX300FW: 1988-2000
Image 2.1: Visual representation of compatible Honda vehicle models.
3. Package Contents
Upon opening the package, verify that all the following components are present:
- 1 x Fuel Petcock Valve Assembly
- 1 x Fuel Filter
- 2 x Fuel Lines
- 4 x Clasps (Hose Clamps)
Image 3.1: Contents included in the MOTO1988 Fuel Petcock Valve package.
4. Product Dimensions
Refer to the diagram below for the approximate dimensions of the fuel petcock valve and associated components. Please allow for a measurement error of 0.03-0.11 inches.
Image 4.1: Product dimension diagram for the fuel petcock valve and fuel filter.
5. Installation and Setup
Disclaimer: Installation of fuel system components should be performed by individuals with appropriate mechanical knowledge. Always refer to your vehicle's specific service manual for detailed instructions and safety precautions. Ensure the engine is cool and disconnect the battery before beginning work.
General Installation Steps:
- Drain Fuel Tank: Safely drain all fuel from the tank into an approved container.
- Remove Old Petcock: Disconnect the fuel line(s) from the old petcock valve. Unscrew and remove the old petcock from the fuel tank. Be prepared for any residual fuel.
- Inspect Tank Opening: Clean the fuel tank opening and ensure the mounting surface is free of debris.
- Install New Petcock: Insert the new MOTO1988 fuel petcock valve into the tank opening. Ensure the included oil seal and any washers are correctly seated to prevent leaks. Tighten the retaining nut securely, but do not overtighten.
- Connect Fuel Filter and Lines: Install the new fuel filter in-line with the fuel flow. Connect the provided fuel lines from the petcock to the fuel filter, and from the fuel filter to the carburetor. Secure all connections with the provided clasps (hose clamps).
- Refill Fuel Tank: Carefully refill the fuel tank with the appropriate fuel type.
- Check for Leaks: Turn the petcock to the 'ON' position and visually inspect all connections for any fuel leaks. Address any leaks immediately before operating the vehicle.
- Test Operation: Start the engine and check for proper fuel flow and engine operation.
Image 5.1: Decomposition graph of the fuel petcock valve components for reference during installation or repair.
6. Operation
The fuel petcock valve features three primary positions to control fuel flow:
- ON: In this position, fuel flows from the main tank outlet to the carburetor. This is the standard operating position.
- OFF: This position stops the fuel flow from the tank. Always turn the valve to 'OFF' when the vehicle is parked for extended periods or during transport to prevent fuel leaks and evaporation.
- RES (Reserve): When the main fuel supply runs low, switch to the 'RES' position to access a small reserve amount of fuel in the tank. This allows you to reach a fuel station. Remember to refuel promptly after using the reserve.
Image 6.1: Fuel petcock valve positions and their functions.
7. Maintenance
Regular maintenance helps ensure the longevity and proper function of your fuel petcock valve and fuel system.
- Inspect for Leaks: Periodically check the petcock valve and fuel lines for any signs of fuel leaks, especially around connections.
- Check Fuel Lines: Ensure fuel lines are not cracked, kinked, or hardened. Replace them if necessary.
- Clean Fuel Filter: The included fuel filter helps prevent debris from reaching the carburetor. Inspect it regularly and replace it if it appears clogged or dirty.
- Valve Operation: Ensure the petcock lever moves smoothly between ON, OFF, and RES positions. If it becomes stiff or difficult to turn, inspect for debris or internal issues.
8. Troubleshooting
If you encounter issues with your fuel system after installing the petcock valve, consider the following:
- Fuel Leakage:
- Ensure all connections are tight and hose clamps are secure.
- Verify the oil seal between the petcock and the fuel tank is correctly installed and not damaged.
- Check for cracks in fuel lines or the petcock body.
- No Fuel Flow / Engine Stalling:
- Confirm the petcock valve is in the 'ON' or 'RES' position.
- Check if the fuel filter is clogged and replace if necessary.
- Ensure there is sufficient fuel in the tank.
- Inspect fuel lines for kinks or blockages.
- Difficulty Switching Positions:
- The valve may have internal debris. Consider disassembling (refer to Image 5.1) and cleaning, or replacing the unit if necessary.
9. Specifications
| Attribute | Value |
|---|---|
| Part Number | 16950-HC4-840 |
| Brand | MOTO1988 |
| Material | Brass |
| Exterior Finish | Machined |
| Inlet Connection Type | Flare |
| Outlet Connection Type | Flare |
| Number of Ports | 2 |
| Item Weight | 5.9 ounces |
| Package Dimensions | 5 x 3.39 x 1.93 inches |
| Size | 1/4 inch |
| Included Components | Fuel Petcock Valve Assembly, Fuel filter, Fuel lines, Clasps |
10. Warranty and Support
Warranty Information:
This MOTO1988 Fuel Petcock Valve comes with a 90-day warranty from the date of purchase. This warranty covers manufacturing defects and material flaws under normal use.
Customer Support:
If you have any questions regarding the product, installation, or require assistance, please contact MOTO1988 customer service. Our team is available to help resolve any issues you may encounter during the use and purchase process.