With the introduction of the new Harley-Davidson Twin-Cam, enthusiasts need a hop-up and repair guide that addresses both the new powerplant and its predecessor, the Evolution engine. Divided into two sections, this new manual describes and illustrates options for improving the performance and reliability of both. Each section begins with a brief history of the engine followed by descriptions and instructions for the most popular aftermarket pistons, cylinders, camshafts, and drive chains, as well as advice for overcoming common obstacles. Specific topics addressed include aftermarket Evolution engines and installing a Twin-Cam in an Evo frame.

For men and women who have the will to service their own bikes and lack only the know-how, this book has it all: basic, easy-to-use information about repairing and maintaining pushrod V-twin motorcycles from someone who really knows the nuts and bolts. Sara Liberte's primer begins with the fundamentals-from wheel size and tire pressure to knowing your shop manual and the tools you'll need-then moves on to the basics of maintenance. Changing oil and other fluids, replacing gaskets, gauging normal wear and tear, inspecting chains and belts and adjusting tension: these are just a few of the topics Liberte covers in complete and clear detail. She also discusses the charging system, battery charging, terminal maintenance, and simple wiring techniques-and, critically, troubleshooting, whether on the road or at the shop.

In Harley-Davidson, moto-journalist Christopher P. Baker offers a complete guide to every production engine ever built by the USA's leading motorcycle brand. This book presents each of the distinct engine epochs chronologically in its own chapter, including profiles of archetypal motorcycle models best associated with each engine. Images of a select variant most representative of each engine era illustrate the introduction of each chapter. Further details on these highlighted engines are given in the pages for the specific model from which each was taken. More than 40 classic Harleys are portrayed in detail, from the first "Model Number 1" F-head single of 1903 to the Pan America adventure tourer of 2021, powered by Harley's state-of-the-art liquid-cooled Revolution Max engine. In between, the development of the Harley-Davidson engines is traced as a gradual evolutionary process, reflecting how the brand's unique classic V-Twin characteristics--hearkening all the way back to the F-head 45-degree layout--came to define an attitude, emotion, and lifestyle, fostering a company maxim: "If it ain't broke, don't fix it."

American Motorcyclist magazine, the official journal of the American Motorcyclist Associaton, tells the stories of the people who make motorcycling the sport that it is. It's available monthly to AMA members. Become a part of the largest, most diverse and most enthusiastic group of riders in the country by visiting our website or calling 800-AMA-JOIN.

By tradition, the motorcycle is a naked beast, differing from other vehicles by the fact that its mechanical structure is also part of its aesthetic appearance. In The Fine Art of the Motorcycle Engine, photographer Daniel Peirce examines the graphic nature of historic engines with stunning and dramatic photography. Since the beginning of the motorbike, engine designers knew they had to design power plants that performed well and looked good. Peirce presents 64 stunning pictures from his popular UP-N-SMOKE Engine Project. In addition to his engine photography, the book also includes the story of the project and the years it took to take it from an inspired idea to a tangible reality.

American Motorcyclist magazine, the official journal of the American Motorcyclist Associaton, tells the stories of the people who make motorcycling the sport that it is. It's available monthly to AMA members. Become a part of the largest, most diverse and most enthusiastic group of riders in the country by visiting our website or calling 800-AMA-JOIN.