951-10309 Carburetor - Fits Yard-Man 11A-41M9001 12A-A1M9001, Cub Cadet 11A-18JY710 CC500 - Replaces 751-10309 951-10873
951-10309 carburetor tune-up kit with air filter, spark plug, fuel filter, gaskets, and fuel line for MTD engines.
Comparison chart showing 951-10309 carburetor center hole diameter measurements for correct compatibility.
951-10309 carburetor all-in-one maintenance kit including gaskets, spark plug, air filter, fuel line, and fuel filter.
951-10309 carburetor and spark plug replacement kit with dimensional measurements for Yard-Man, Cub Cadet, and MTD mowers.
951-10309 carburetor replacement kit with air filter, fuel line, spark plug, and gaskets for MTD lawn mowers.
Infographic showing 951-10309 carburetor components including idle speed screw, bowl vent, fuel inlet, and air jet orifice.
951-10309 carburetor kit with air filter, spark plug, and gaskets for lawn mower engine repair.
Infographic showing 951-10309 carburetor installation steps for Yard-Man, Cub Cadet, and MTD engines.
Multi-angle view of 951-10309 replacement carburetor for Yard-Man, Cub Cadet, and MTD lawn mowers.
951-10309 carburetor tune-up kit with air filter, spark plug, fuel filter, gaskets, and fuel line for MTD engines.
Comparison chart showing 951-10309 carburetor center hole diameter measurements for correct compatibility.
951-10309 carburetor all-in-one maintenance kit including gaskets, spark plug, air filter, fuel line, and fuel filter.
951-10309 carburetor and spark plug replacement kit with dimensional measurements for Yard-Man, Cub Cadet, and MTD mowers.
951-10309 carburetor replacement kit with air filter, fuel line, spark plug, and gaskets for MTD lawn mowers.
Infographic showing 951-10309 carburetor components including idle speed screw, bowl vent, fuel inlet, and air jet orifice.
951-10309 carburetor kit with air filter, spark plug, and gaskets for lawn mower engine repair.
Infographic showing 951-10309 carburetor installation steps for Yard-Man, Cub Cadet, and MTD engines.
Multi-angle view of 951-10309 replacement carburetor for Yard-Man, Cub Cadet, and MTD lawn mowers.
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951-10309 Carburetor - Fits Yard-Man 11A-41M9001 12A-A1M9001, Cub Cadet 11A-18JY710 CC500 - Replaces 751-10309 951-10873

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951-10309 Carburetor

Key Features

  • Optimized Fuel Atomization: Specifically jetted for MTD 159cc and 173cc vertical shaft engines, ensuring a consistent fuel-to-air ratio for easy starting and steady operation.
  • Fixed-Jet Design: Features factory-set internal jets that eliminate the need for complex manual adjustments, providing "out-of-the-box" performance for walk-behind mowers.
  • Corrosion-Resistant Components: Equipped with a fuel bowl and internal needle valves treated to resist the corrosive properties of ethanol-blended fuels (up to E10).
  • Integrated Choke Lever: Features a durable manual choke mechanism designed for smooth movement and reliable engagement during cold starts.
  • Vacuum-Tight Gasket Seal: Includes precision-cut mounting gaskets to ensure a perfect vacuum seal against the engine block, preventing RPM surging and air leaks.

Replaces / Cross-Reference Part Numbers

  • 951-10309
  • 751-10309
  • 951-10873
  • 751-10873
  • 951-12098 / 751-12098 (Select models)

Compatibility & Fitment

This carburetor is a primary replacement for MTD-manufactured engines used on various push and self-propelled mowers. Key compatible brands and models include:

  • MTD / Yard Machines: Fits 159cc and 173cc engine models including 5P65M0, 5P65M0A, 5P65M0B, 5P65M0C, and 5P65MU.
  • Cub Cadet: Fits walk-behind mowers 11A-18JY710, CC500, and CC501.
  • Yard Man: Fits push mower models 11A-41M9001 and 12A-A1M9001.
  • Craftsman: Compatible with select 247-series mowers utilizing the MTD 5P65 engine platform.

When to Replace

  • No-Start Condition: The engine has spark and compression but will not fire, even after cleaning the spark plug, indicating a complete fuel blockage.
  • Surging or "Hunting": The engine speed cycles up and down rhythmically at idle, often caused by a restricted pilot jet or an air leak.
  • Leaking Fuel: Gasoline is dripping from the bottom of the fuel bowl or from the intake, indicating a stuck float or a failed needle valve seal.
  • Poor Performance Under Load: The engine dies or loses significant power as soon as it enters tall grass, suggesting the main high-speed jet is partially clogged.
  • Choke Malfunction: The manual choke lever is stuck, bent, or broken, making it impossible to start the engine when cold.

Installation Tips

  • Photo Reference: Before removing the old unit, take a clear photo of the throttle linkage and governor spring positions to ensure they are reinstalled correctly.
  • Drain the Tank: Always drain the old gasoline from the fuel tank and line before installing the new carburetor. Using old, "stale" gas will immediately clog the new jets.
  • Linkage Handling: Be careful not to stretch or bend the thin metal governor rods. They should "drop" into the plastic holes on the carburetor arm without force.
  • Gasket Orientation: Ensure the paper gaskets are installed in the correct order and direction. If the gasket blocks the small pulse hole on the intake flange, the engine will not run.
  • Filter Check: It is highly recommended to replace your air filter and fuel line at the same time. A dirty air filter will cause the new carburetor to run too "rich," leading to black smoke and fouled plugs.
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  • PART NUMBERS

    PART NUMBERS

    Replaces part numbers 951-10309, 751-10309, 951-10873, and 751-10873 for reliable compatibility across multiple models.
  • FIX ENGINE'S SYMPTOMS

    FIX ENGINE'S SYMPTOMS

    Helps resolve hard starting, engine stalling, poor acceleration, high fuel consumption, carburetor flooding, and excessive exhaust issues.
  • SAVING SOLUTION

    SAVING SOLUTION

    A cost-effective DIY fix that restores engine performance and makes your gardening tasks smoother and more efficient.
  • IMPORTANT NOTE

    IMPORTANT NOTE

    This is a compatible replacement part. Brand names are used for reference only to indicate compatibility.
SUPERIOR QUALITY

SUPERIOR QUALITY

Made of lightweight & robust Aluminum Alloy that can withstand the rigors of frequent use in outdoor environments: Tunable Fuel-Air Mixture | Corrosion Resistance | Low Fuel Consumption | Quick Start & Smooth Acceleration
EASY INSTALLATION

EASY INSTALLATION

1. Turn off the fuel valve. Drain the fuel tank | 2. Remove the air filter cover, air filter, and air filter housing | 3. Disconnect the fuel lines. Remove the linkage from the carburetor. Discard your old carburetor | 4. Clean the engine area before installing new part. Adjust the idle mixture screw if the engine stalls during test.
Brand Model Number
Yard Man 11A-41M9001, 12A-A1M9001 Lawn Mower
Cub Cadet 11A-18JY710 (2012), CC500 (2010), CC501 Lawn Mower
MTD 11A-08M9006, 11A-18M9010, 11A-41M9006, 11A-50M9006, 11A-54M9000, 11A-54M9002, 11A-54M9006, 11A-54M9009, 11A-54M9016, 11A-54M9019, 11A-54M9022, 11A-54M9026, 11A-54M9029, 11A-54M9033, 11A-54M9054, 11A-54M9057, 11A-54M9077, 11A-54M9098, 11A-54M9105, 11A-54M9118, 11A-54M9121, 11A-54M9129, 11A-54M9131, 11A-54M9134, 11A-54M9138, 11A-54M9145, 11A-54M9151, 11A-54M9196, 11A-54M9205, 11A-54M9206, 11A-54M9229, 11A-54M9301
MTD 11A-54M9304, 11A-54M9307, 11A-54M9308, 11A-54M9371, 11A-54M9372, 11A-54M9382, 11A-54M9401, 11A-54M9513, 11A-54M9704, 11A-54M9705, 11A-54M9706, 11A-54M9709, 11A-54M9713, 11A-54M9715, 11A-54M9719, 11A-54M9720, 11A-54M9722, 11A-54M9724, 11A-54M9726, 11A-54M9729, 11A-54M9730, 11A-54M9745, 11A-54M9754, 11A-54M9777, 11A-54M9929, 11A-54M9977, 12A-46M9031 Lawn Mower
MTD Engine 5P65M0, 5P65M0A, 5P65M0B, 5P65M0C, 5P65MU Engine
NOTE Please use "Ctrl + F" on desktop or the "Find in Page" function on mobile to quickly check your compatible model. (This is not an exhaustive list. You can send us your appliance model and we will help you!)

FAQ

This carburetor is commonly used on select walk-behind mower applications from MTD, Yard-Man, Cub Cadet, and Troy-Bilt. The title specifically lists Yard-Man models 11A-41M9001 and 12A-A1M9001, Cub Cadet 11A-18JY710, CC500, and CC501, plus MTD engine series 5P65M0, 5P65M0A, 5P65M0B, 5P65M0C, and 5P65MU. Because MTD-built equipment is often shared across brands, matching the exact engine model and original carburetor part number is the safest way to confirm fit.
Known replacement and cross-reference numbers for this carburetor include 951-10309, 751-10309, 951-10873, and 751-10873. Before ordering, compare the part number on your original carburetor or your equipment parts diagram to one of these numbers.
Typical carburetor-related symptoms include hard starting, only running on choke, surging at idle or under load, stalling after a few seconds, fuel leaking from the carburetor, or poor throttle response. On these mower engines, a blocked main jet, varnish from old fuel, or internal float/needle problems are common reasons the carburetor stops metering fuel correctly.
For most walk-behind mower applications, this is usually a straightforward repair for someone comfortable with basic small-engine work. Expect roughly 20 to 45 minutes. Common tools include a screwdriver, nut driver or socket set, needle-nose pliers, and a container or clamp for the fuel line. During removal, pay close attention to the throttle/choke linkage positions and the order and orientation of the carburetor gaskets, since incorrect gasket placement is a common cause of air leaks after installation.
First confirm the problem is actually fuel-delivery related. Check for stale fuel, a plugged air filter, contaminated fuel line, restricted fuel cap vent, dirty spark plug, and clogged fuel filter if equipped. Also inspect the intake gaskets and mounting surface for air leaks. If the mower has been sitting with ethanol fuel in it, the carburetor may be gummed up, but replacing old fuel and cleaning the rest of the fuel system at the same time helps prevent the new carburetor from having the same issue.
The most common cause is fuel degradation during storage. Ethanol-blended gasoline can absorb moisture and leave varnish deposits that clog small passages and jets. Other causes include dirt in the fuel system, a sticking float needle, dried or damaged gaskets, and corrosion from long periods of non-use. Using fresh fuel, draining the mower for off-season storage, or adding fuel stabilizer can help extend carburetor life.