In this book, Lennard Zinn explains and demonstrates how to completely and properly maintain every component of a mountain bike, including chains, derailleurs, shifters, wheels, brakes, cranks, bottom brackets, pedals, saddles, seatposts, suspension systems, handlebars, stems, headsets, forks, and frames. He describes and rates every repair and counsels the novice bike mechanic how to decide whether or not to take the bike to a bike shop for professional attention. Extensive line drawings show how parts fit together and illustrate the tools required for every type of bike. Also explained are emergency on-trail repair tricks.