Product: 640065A Carburetor for Tecumseh OHV110 OHV115 OHV120 Engines (13.5HP, 14HP, 15HP) Compatible with Tractor MTD Yard Machine Engine 520952 and 056316 What this part does Replaces the original carburetor to restore correct fuel and air delivery to the engine. Controls mixture and idle to help achieve consistent starting, steady idling, and predictable throttle response. Designed to match the form and function of the specified engine carburetor for direct replacement. Key benefits Reliable replacement: Fits specified engine models and part numbers to simplify repairs and reduce troubleshooting. Restores performance: Returns proper fuel metering so engines start more easily and run smoothly under light and moderate loads. Servicefriendly: Designed for straightforward installation and adjustment with standard carburetor linkage and mounting. Compatibility and fit Compatible with Tecumseh OHV110, OHV115, and OHV120 engine models. Suitable for 13.5 HP, 14 HP, and 15 HP engine ratings as listed. Cross references include engine and equipment part numbers 520952 and 056316 for use on compatible tractor and yard equipment models. Function and attributes Function: Controls the air fuel mixture and idle settings to support combustion and engine operation. Fit: Intended as a direct replacement for the referenced carburetor configuration and mounting points. Adjustability: Idle and mixture screws provide the ability to tune engine idle and response after installation. Typical applications Lawn and garden tractors: a clogged or damaged carburetor on a riding mower that uses the listed engine models to restore reliable starting and idling. Seasonal maintenance: Swap in a fresh carburetor during spring tune up to eliminate fuel flow issues from old or varnished components. Equipment : Use as a part when troubleshooting hard starting, rough idle, or poor throttle response on compatible tractor and yard machine engines. Installation notes Intended for users comfortable with small engine maintenance or for professional service technicians. Verify engine model and part numbers before to ensure compatibility. After installation, allow the engine to warm up and fine tune idle and mixture settings according to engine service recommendations. Why choose this part Matches the specified carburetor models and crossreference numbers to simplify compatibility checks. Focuses on restoring the intended fuel and air delivery functions of the engine rather than cosmetic replacement. What to verify before ordering Confirm engine model (OHV110, OHV115, or OHV120) and horsepower rating (13.5 HP, 14 HP, 15 HP). Confirm equipment part numbers 520952 or 056316 when applicable. Ensure the carburetor mounting, linkage, and fuel inlet locations match your equipment. This replacement carburetor is provided to restore correct fuel metering and engine operation for the listed engine models and parts. If you are uncertain about fitment, compare your existing carburetor part numbers and mounting arrangement with the references above before .