1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your ATRACYPART Carburetor. It is designed to ensure optimal performance and longevity of the component when installed correctly on compatible Arctic Cat ATV models.
Compatibility:
- Arctic Cat 250 2x4 4x4: 2002, 2003, 2004, 2005
- Arctic Cat 300 2x4: 2001, 2002, 2003
- Arctic Cat 300 4x4: 2001, 2002, 2003, 2004, 2005
Replaces Part Numbers: 0470-448, 0470-427
Image 1.1: Visual representation of compatible Arctic Cat ATV models and years.
2. Product Components
The ATRACYPART Carburetor kit includes the following components:
- Carburetor assembly
- Air filter
- Fuel valve petcock
- Spark plug
- Fuel filter
- Hoses and clamps
- Additional small parts (gaskets, O-rings)
Image 2.1: Overview of all parts included in the carburetor kit, including the carburetor, air filter, fuel valve, spark plug, and other accessories.
3. Specifications
| Specification | Value |
|---|---|
| Model Number | A1555 |
| Manufacturer Part Number | A1555 |
| Intake Manifold Side (Inner Diameter) | 28mm (1.10 inches) |
| Intake Manifold Side (Outer Diameter) | 32mm (1.26 inches) |
| Air Filter Intake Side (Inner Diameter) | 46mm (1.81 inches) |
| Air Filter Intake Side (Outer Diameter) | 50mm (1.96 inches) |
| Item Weight | 2.1 pounds |
| Product Dimensions | 9 x 4.7 x 5.1 inches |
Image 3.1: Detailed view of the carburetor's intake manifold side with measurements for inner and outer diameters.
Image 3.2: Detailed view of the carburetor's air filter intake side with measurements for inner and outer diameters.
4. Setup and Installation
Proper installation is crucial for the carburetor's function. If you are unsure about any step, it is recommended to consult a qualified mechanic or your vehicle's service manual.
- Preparation: Ensure the engine is cool. Turn off the fuel supply and disconnect the battery to prevent accidental starting.
- Removal of Old Carburetor: Carefully disconnect all hoses (fuel, vacuum), cables (throttle, choke), and electrical connectors attached to the old carburetor. Remove mounting bolts and detach the old carburetor.
- Inspection: Inspect the intake manifold, air filter boot, and fuel lines for any damage or wear. Replace any worn components as necessary.
- Installation of New Carburetor: Install the new ATRACYPART carburetor, ensuring all gaskets are properly seated. Connect the intake manifold and air filter boot securely.
- Connections: Reconnect all fuel lines, vacuum hoses, throttle cable, choke cable, and electrical connectors. Ensure all connections are tight and secure to prevent leaks or malfunctions.
- Fuel Valve and Filter: Install the new fuel valve petcock and fuel filter as part of the fuel system.
- Spark Plug: Replace the old spark plug with the new one provided, ensuring it is correctly gapped and tightened to specifications.
- Final Checks: Double-check all connections. Turn on the fuel supply and check for any leaks before starting the engine.
Note: The spark plug included in this kit may not be compatible with all Arctic Cat models. Verify the correct spark plug type for your specific ATV before installation.
5. Operating Instructions
The carburetor's primary function is to mix fuel and air in the correct ratio for efficient engine combustion. After installation, minor adjustments may be required to achieve optimal engine performance.
- Initial Start-up: After installation, the engine may require a few attempts to start as the fuel system primes. Use the choke as needed for cold starts.
- Idle Adjustment: Once the engine is warm, adjust the idle speed screw to achieve a stable idle RPM as specified in your ATV's service manual.
- Air-Fuel Mixture: The air-fuel mixture screw controls the richness or lean-ness of the mixture at idle and low speeds. Adjust this screw in small increments (e.g., 1/4 turn) to find the smoothest idle and best throttle response. Turning clockwise leans the mixture, counter-clockwise enriches it.
- Test Ride: After adjustments, perform a test ride to ensure smooth acceleration and consistent power delivery across the RPM range.
Always refer to your specific ATV's service manual for detailed operating and adjustment procedures.
6. Maintenance
Regular maintenance of your carburetor and associated components will ensure reliable performance and extend the life of your ATV.
- Carburetor Cleaning: Periodically clean the carburetor, especially the float bowl and jets, to remove fuel deposits and varnish. Use a carburetor cleaner spray and compressed air.
- Air Filter Maintenance: The included air filter should be regularly inspected and cleaned or replaced. A dirty air filter restricts airflow, leading to a rich fuel mixture and reduced engine performance.
- Fuel Filter Inspection: Inspect the fuel filter for contaminants and replace it if it appears dirty or clogged. This prevents debris from reaching the carburetor.
- Fuel Quality: Use fresh, clean fuel. Stale or contaminated fuel can cause significant carburetor issues.
- Hose and Clamp Check: Regularly inspect all fuel lines and vacuum hoses for cracks, leaks, or loose connections. Ensure all clamps are secure.
7. Troubleshooting
This section addresses common issues you might encounter with your carburetor.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine will not start | No fuel, clogged fuel filter, faulty spark plug, incorrect choke usage | Check fuel level, replace fuel filter, inspect/replace spark plug, ensure proper choke operation |
| Engine runs poorly/lacks power | Dirty air filter, clogged carburetor jets, incorrect air-fuel mixture, old fuel | Clean/replace air filter, clean carburetor jets, adjust air-fuel mixture, use fresh fuel |
| Fuel leaks | Loose fuel lines, damaged gaskets, stuck float | Tighten connections, replace gaskets, inspect float and needle valve |
| Engine idles rough | Incorrect idle speed, improper air-fuel mixture, vacuum leak | Adjust idle screw, adjust air-fuel mixture, check for vacuum leaks |
If troubleshooting steps do not resolve the issue, it is recommended to seek assistance from a professional mechanic.
8. Warranty Information
This ATRACYPART Carburetor comes with a 12-month after-sales warranty. This warranty covers manufacturing defects and ensures the product meets quality standards. For warranty claims or assistance, please retain your proof of purchase and contact ATRACYPART customer service.
9. Support
For further assistance, technical inquiries, or to provide feedback, please contact ATRACYPART customer support. You can also visit the official ATRACYPART store on Amazon for more product information and resources: