Pro Chaser SC300HW Carburetor for Cub Cadet & MTD 163–250cc Engines — Direct-Fit Replacement Kit with Gaskets & Fuel Parts

The Pro Chaser SC300HW Carburetor is a complete replacement kit designed to restore fuel delivery for Cub Cadet, Troy-Bilt, MTD and compatible 163–250cc small engines.

When your lawn mower, pressure washer or small engine starts running rough, hard to start, or won't maintain idle, a worn or clogged carburetor is often the culprit. The SC300HW from Pro Chaser is built as a direct-fit replacement for many Cub Cadet, Troy-Bilt, Workforce and MTD models, and it ships with the gaskets and consumables you need for a straightforward swap. This package aims to get your machine back to reliable performance without hunting down multiple parts.

Which machines and part numbers does this carburetor fit?

The Pro Chaser SC300HW is compatible with a wide range of small engines from Cub Cadet, MTD, Troy-Bilt and related brands. It replaces OEM and aftermarket part numbers used across lawn mowers and pressure washers.

• Compatible with Cub Cadet models: 11A-18MC056, CC500, CC550SP, 12A-18MC056 and similar
• Fits MTD and Troy-Bilt part numbers: 951-10310, 751-10310, 951-10309 and others listed
• Workforce pressure washer replacement for 099980132005 (163cc 2500 PSI)
• Also fits MTD Yard-Man models: 11A-08MA029, 11A-54MB029, 11A-54MB055 and related

What’s included in the replacement kit and why it matters?

Beyond the carburetor body, Pro Chaser supplies the common wear and sealing parts that are typically replaced during a carburetor service. This reduces the chance of additional trips to the store and helps ensure a reliable installation.

• 1 x SC300HW carburetor body, pre-assembled for direct fit
• 3 x gaskets to ensure a gas- and vacuum-tight seal
• 1 x fuel hose plus 2 x clamps for secure fuel routing
• 1 x fuel filter, 1 x air filter and 1 x pre-filter to protect the engine
• 1 x spark plug included for a fresh ignition component after servicing

How do I install the Pro Chaser SC300HW—what should I prepare?

Installation is typical of small-engine carburetor swaps and can be completed with basic hand tools. Prepare a clean workspace, note hose routing, and take photos to guide reassembly if needed.

• Disconnect spark plug and drain or clamp the fuel line before starting
• Remove air cleaner assembly and throttle linkages gently to avoid damage
• Replace old gaskets and hoses with the supplied parts and secure with clamps
• Reinstall air filters and prime or set idle according to engine manual

What performance changes or maintenance benefits should I expect?

Installing a new carburetor and fresh filters typically restores smooth idling, easier starting and more consistent throttle response. It also prevents fuel contamination and delivers a clean air-fuel mixture.

• Improved starting reliability after replacing old, stuck jets or passages
• Smoother idle and better throttle response under load
• Reduced fuel leaks and vapors with new gaskets and clamps
• Extended engine life by using fresh fuel and air filtration parts

Who is this for? The Pro Chaser SC300HW carburetor kit is meant for DIY owners and small engine technicians servicing Cub Cadet, MTD, Troy-Bilt, Workforce and similar machines. If you have a 163–250cc engine that exhibits rough idle, hard starting, poor throttle response or fuel leakage, this replacement kit supplies the hardware and consumables needed for a single-stop repair. It’s also a good option for preventive maintenance if your machine has been stored with old fuel or has a history of carburetor issues. For best results, follow the engine manufacturer’s adjustment and safety instructions during installation.