Replacement carburetor compatible with HT3545595V and TEC631921 tiller engine models Key benefits Restores reliable fuel and air delivery for smoother starts and steadier idle. Directfit replacement designed to match original equipment dimensions, reducing installation time and adjustments. Improves throttle response and running stability after fuel system wear or clogging. Durable construction for consistent performance during routine use and seasonal storage. What this part does Regulates the fuel and air mixture entering the combustion chamber to support proper engine operation. Replaces worn or damaged carburetors that cause hard starting, rough idle, stalling, or poor throttle response. Works as a straightforward swap to small tiller engines to expected running condition. Compatibility and fit Compatible with HT3545595V and TEC631921 carburetor part numbers used on a range of tiller engines. Designed for direct replacement on engines that specify these part numbers; intended to use existing mounting points, linkages, and fuel connections when applicable. Check engine model and part number to confirm fit before installation. Performance and attributes Function: meters fuel and air for reliable combustion and idle control. Size and fit: standard replacement size for direct mounting on compatible tiller engines; engineered to align with original mounting and linkage geometry. Construction: built for dependable operation in routine outdoor power equipment use; resists common wear that leads to poor engine performance. Maintenance: easier starting and more stable idle reduce the need for repeated tuning and troubleshooting. Typical applications a fouled or leaking carburetor on a garden tiller to restore smooth starting and consistent power. Service rental or landscaping equipment that sees frequent use to minimize downtime and improve reliability. Rebuild or refurbish small engine equipment during seasonal maintenance to ensure dependable operation through the working season. Installation tips Inspect fuel lines, primer bulb, and mounting gaskets while replacing the carburetor. Clean the mounting surface and ensure the choke and throttle linkages operate before final adjustment. After installation, follow basic idle and mixture adjustment procedures for running. This carburetor is intended as a replacement part for the listed part numbers and functions as a directfit option to compatible tiller engines to reliable operation.