1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your IBVIBV Huayi OEM Carburetor. This carburetor is designed as a high-quality replacement part for specific Troy Bilt Storm 2620 Snow Blower models. Please read these instructions carefully before proceeding with any installation or maintenance to ensure safe and effective use.
2. Product Overview
The IBVIBV Huayi OEM Carburetor is manufactured from durable materials and tested to meet or exceed original equipment manufacturer (OEM) quality standards. It is designed to atomize fuel and mix it with air for efficient engine combustion, ensuring reliable performance and lower fuel consumption.
Key Components:
- Carburetor Unit: The main assembly responsible for fuel-air mixture.
- Gaskets: Essential for creating a tight seal between components.
- Fuel Line: Connects the fuel tank to the carburetor.
- Primer Bulb: Used to prime the carburetor with fuel for easier starting.
- Fuel Filter: Prevents contaminants from entering the carburetor.
- Shut-off Valve: Controls fuel flow.
- Clamps: Secure fuel lines.

Image showing the IBVIBV Huayi OEM Carburetor kit, including the carburetor unit, three gaskets, a fuel line, and a primer bulb.

Close-up image highlighting the 'Huayi OEM' branding and quality certifications (RoHS, ISO/TS 16949, ISO 14001, ISO 9001).
3. Compatibility
This carburetor is compatible with the following snow blower models:
- Troy Bilt Storm 2620 Snow Thrower Blower, model# 31BM63P3711
- Troy Bilt Storm 2620 Snow Thrower Blower, model# 31BM63P3766
Please verify that the part shown in the product images is identical to your original part before installation.
4. Safety Information
Always prioritize safety when working with fuel systems and power equipment. Failure to follow safety instructions can result in serious injury or property damage.
- Ensure the snow blower engine is off and cooled down before beginning any work.
- Disconnect the spark plug wire to prevent accidental starting.
- Work in a well-ventilated area.
- Wear appropriate personal protective equipment, including safety glasses and gloves.
- Handle fuel with extreme care. Store fuel in approved containers and away from ignition sources.
- Keep a fire extinguisher nearby.
5. Setup and Installation
Replacing a carburetor requires mechanical aptitude. If you are unsure about any step, it is recommended to seek assistance from a qualified technician.
General Installation Steps:
- Preparation: Gather necessary tools (wrenches, screwdrivers, pliers, fuel-resistant clamps, new fuel line if needed). Place a drip pan under the carburetor to catch any spilled fuel.
- Drain Fuel: Turn off the fuel supply valve (if present) and drain the fuel tank into an approved container.
- Remove Air Filter Assembly: Disconnect and remove the air filter housing and any associated components to access the carburetor.
- Disconnect Linkages and Hoses: Carefully disconnect the throttle linkage, choke linkage, and fuel lines from the old carburetor. Note their positions for reassembly.
- Remove Old Carburetor: Unbolt the old carburetor from the engine. Remove and discard old gaskets.
- Install New Carburetor: Install the new IBVIBV Huayi OEM Carburetor using new gaskets. Ensure all mounting surfaces are clean.
- Reconnect Components: Reattach the throttle and choke linkages, ensuring they operate smoothly. Connect the fuel lines, securing them with clamps. Install the new primer bulb and fuel filter as needed.
- Reassemble Air Filter: Reinstall the air filter assembly.
- Refill Fuel: Add fresh, clean fuel to the tank.
- Test: Prime the carburetor (if applicable) and start the engine. Check for fuel leaks and proper engine operation.
Video demonstrating the components of a carburetor kit compatible with Troy Bilt Storm 2410/2620 snow blowers, including gaskets, fuel filter, and primer bulb.
Detailed video showcasing the internal components of a Huayi carburetor, including the float and main jet, emphasizing precision engineering.
Video illustrating the disassembly and reassembly of a Huayi carburetor, highlighting key components like the copper nozzle and float chamber.
6. Operating
Once the carburetor is correctly installed, the snow blower should operate as designed. Ensure the choke and throttle linkages are properly adjusted for smooth engine starting and operation. Refer to your snow blower's original instruction manual for specific starting and operating procedures.
7. Maintenance
Regular maintenance helps prolong the life of your carburetor and ensures optimal performance.
- Fuel Quality: Always use fresh, clean fuel. Stale fuel or fuel containing ethanol can cause deposits and damage carburetor components. Consider using a fuel stabilizer.
- Fuel Filter: Inspect and replace the fuel filter periodically, or if it appears clogged or dirty.
- Cleaning: If the engine experiences performance issues, the carburetor may need cleaning. This typically involves disassembling the carburetor and cleaning jets and passages with carburetor cleaner.
- Storage: Before long-term storage, drain the fuel system or run the engine until it runs out of fuel to prevent fuel degradation and carburetor clogging.
8. Troubleshooting
If you encounter issues after installing the new carburetor, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine won't start | No fuel, clogged fuel filter, incorrect choke setting, spark plug issue | Check fuel level, replace fuel filter, adjust choke, inspect spark plug |
| Engine runs rough/stalls | Improper fuel-air mixture, dirty carburetor jets, air leak | Clean carburetor, check for loose connections or damaged gaskets |
| Fuel leaks | Loose fuel lines, damaged gaskets, float needle issue | Tighten connections, replace gaskets, inspect float needle |
| Lack of power | Clogged fuel filter, restricted air intake, carburetor adjustment needed | Replace fuel filter, clean air filter, consult a technician for carburetor adjustment |
If problems persist after attempting these solutions, consult a qualified service technician.
9. Specifications
- Product Dimensions: 4 x 4 x 4 inches
- Item Weight: 9.9 ounces
- Manufacturer: IBVIBV
- Item Model Number: 31BM63P3711, 31BM63P3766
- UPC: 790885703393
- Vehicle Service Type: Snowblower
- Recommended Uses: Snowblower
10. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact the seller directly. Keep your proof of purchase for any warranty claims.