MOTOALL Carburetor Replacement for Cub Cadet Troy-Bilt MTD - 951-14423 Fit with 3 Gaskets, Direct OEM-Style Swap

The MOTOALL Carburetor Huayi is a direct-replacement carburetor (replace part 951-14423 / 5X65RU) supplied with three gaskets to restore fuel delivery on compatible Cub Cadet, Troy-Bilt and MTD lawn mower models.

This carburetor assembly is built to match the original equipment specifications for several Cub Cadet, MTD and Troy-Bilt push mower models and comes with multiple gaskets to simplify installation. It’s offered as a straightforward parts swap for machines showing symptoms of poor running, hard starting, or uneven idle that are traced to the carburetor. The unit ships complete with the gaskets you’ll need to reseal the intake and bowl, making the replacement process quicker and reducing the chance of leaks.

Which mower models will this carburetor fit?

This MOTOALL Huayi carburetor is designed to replace OEM part number 951-14423 (also referenced as 5X65RU) and fits a range of Cub Cadet, MTD and Troy-Bilt models. Check your engine and model numbers against the list below before purchasing to ensure compatibility.

• Cub Cadet: LE100, SC100, SC300, SC500, ST100
• MTD: RM120, RM210, RM220, RM2210
• Troy-Bilt: TB105, TB120, TB220, TB115, TB270
• Yard Machines / Yard Man / Husky model references included in the fitment list

What hardware and gaskets are included with the carburetor?

The package includes one complete carburetor assembly and three replacement gaskets to properly seal the connections. These gaskets cover the intake and bowl mating surfaces typically disturbed during removal of the old unit.

• 1 × MOTOALL Huayi carburetor (complete assembly)
• 3 × replacement gaskets for intake and bowl sealing
• Unit sold ready-to-install; small fasteners or linkages from the original carburetor are usually reused

How difficult is the installation and what tools are needed?

Installation is a moderate DIY task for anyone comfortable with small engine maintenance. Basic hand tools and a few hours of time are typically all that’s required; follow safe procedures like draining fuel and disconnecting the spark plug before starting.

• Common tools: screwdriver set, socket or wrench set, pliers
• Recommended: service manual or model-specific guide for torque and linkage routing
• Plan to clean mating surfaces and replace gaskets supplied in the kit

Will this carburetor restore performance and how should I troubleshoot afterward?

Replacing a faulty carburetor often resolves issues such as hard starting, stalling, or rough idling when those problems originate in the carburetion system. After installation, adjust linkages and idle settings per the mower’s manual and run the engine to verify smooth throttle response and no fuel leaks.

• Check for fuel leaks around gaskets and fittings after first start
• Adjust choke and idle screws as recommended by the manufacturer
• If problems persist, inspect ignition, fuel filter, and fuel lines for related issues

Who is this for: The MOTOALL Carburetor Huayi with gasket set is intended for homeowners, lawn care technicians, and small-engine repair shops needing a reliable OEM-replacement for Cub Cadet, MTD, and Troy-Bilt walk-behind mowers listed above. Choose this part if your mower matches the listed model numbers and you want a complete carburetor replacement packaged with the gaskets necessary to reseal the intake and bowl during a single repair session.