A workshop guide to the strip-down, rebuild, maintenance and repair of two-stroke motorcycle engines. Author Dave Boothroyd covers the principles and practice of two-stroke engine work, examining a wide range of marques and road, racing and trail motorcycles. With over 450 colour photographs, this new book covers: the chronological development of two-stroke engines and workshop procedures for each era; the examination of each major engine component in turn, including cylinder head, piston, piston rings, crankcase, flywheel, bearings, inlet manifold, clutch, gearbox and primary drive, and, finally, racing motorcycles and tuning engines for best performance; diagnosing problems and workshop safety. This practical reference guide is for the two-stroke motorcycle owner or restorer and is illustrated throughout with over 450 colour photographs.