This master parts manual covers Bolens tractor models HT 20, 1250, 1455, 1476, 1477, and 1886, produced between 1967 and 1972, with specific year ranges varying per model. Bolens, a historically significant manufacturer of garden tractors, produced these robust and versatile machines during a key period of development in tractor technology. These tractors are known for their durability and capability, making them sought after by owners, restorers, and mechanics. This comprehensive resource is designed to provide unparalleled completeness for parts identification and procurement, depicting every single part on the specified tractor models. This manual serves as an essential guide for maintaining and repairing your Bolens tractor. It offers an exhaustive breakdown of all parts, including detailed assembly diagrams, clear part identification with associated part numbers, and illustrations showing component relationships. Coverage extends to all major systems, including the engine, drivetrain, chassis, hydraulics, electrical system, and operator controls, as well as attachments and accessories. The manual's primary utility lies in its ability to support accurate repairs and the sourcing of correct replacement components, making it an indispensable tool for Bolens tractor owners, restorers, mechanics, and parts suppliers.