This comprehensive service and repair manual provides detailed instructions for servicing and repairing Tecumseh HSK and HXL 840-850, as well as TVS and TVXL 840 engines. The manual covers all aspects of engine operation, maintenance, and repair, including engine identification, lubrication, carburetion, piston and rings, self-energizing brake system, governor linkage and adjustment, controls, rewind starter, disassembly, reassembly, torque specifications, and engine specifications. The manual also includes troubleshooting tips and a table of problems and corrections to help you quickly diagnose and fix any issues. This manual is a valuable resource for anyone who wants to service and repair their Tecumseh engine.

The Tecumseh HSK/HXL and TVS/TVXL engines are a range of robust and reliable small gasoline engines designed for various applications. The HSK/HXL 840-850 and TVS/TVXL 840 engines specifically are known for their durability and performance, making them ideal power sources for a wide array of equipment. They are typically found in lawn and garden equipment such as lawnmowers, tillers, generators, and pressure washers. These engines are known for their ease of maintenance and repair, thanks to their straightforward design and readily available parts.

These Tecumseh engines employ a four-stroke, single-cylinder design, typically featuring an OHV (overhead valve) configuration. This configuration provides efficient combustion and low-emission operation. The HSK/HXL and TVS/TVXL series utilize a variety of starting mechanisms, including recoil starters, electric starters, and even manual cranking methods. They are known for their smooth running characteristics and relatively low noise levels, making them suitable for a range of residential and light commercial applications. The engine's design allows for easy access to key components, simplifying routine maintenance tasks such as oil changes, spark plug replacements, and air filter cleaning. Their robust construction ensures long-lasting performance, making them a reliable choice for various power equipment needs.