This document provides comprehensive parts information for the 2001 Yamaha F80TLRZ and F100TLRZ four-stroke outboard motors. These motors are engineered with reliable and simple construction, offering 80 HP and 100 HP respectively. The catalogue covers a wide array of components, including the cylinder crankcase, crankshaft and piston assembly, intake valves, carburetor, oil pump and pan, starter motor, generator, and the entire electrical system. Additionally, it details parts for the outboard drive propulsion system, such as the lower casing, and various cowling sections. This English-language Parts Catalogue is designed to assist owners and technicians in identifying and sourcing necessary components for maintenance and repair. It includes detailed listings for parts within the fuel system, steering and control mechanisms, and repair kits. Regular maintenance, such as flushing the motor after use, depleting fuel for storage, and visual inspections, is crucial for prolonging the life of these Yamaha outboards. Scheduled service, recommended approximately every three years or 300 hours, involves tasks like oil changes, propeller inspection, and spark plug replacement, all facilitated by the detailed information within this manual.