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BSA A50 (1961 - 1971)


Complete coverage for your vehicle

Written from hands-on experience gained from the complete strip-down and rebuild of a BSA A50, Haynes can help you understand, care for and repair your BSA A50. We do it ourselves to help you do-it-yourself, and whatever your mechanical ability, the practical step-by-step explanations, linked to over 900 photos, will help you get the job done right. Regular servicing and maintenance of your BSA A50 can help maintain its resale value, save you money, and make it safer to ride.


BSA introduced their unit-construction 650 parallel twin in 1962. The 654cc machine started life as the A65 Star basic model, with various offshoots developing through the decade. The Lightning versions sported twin carbs, as did the highly-strung Spitfire which was intended for competition use. The single-carb Thunderbolt fulfilled more of an everyday, touring role, and by 1968 it sported 12-Volt electrics, a Concentric carb, two-way fork damping and a three-spring clutch to go with its four-speed gearbox. At Haynes, we have an extensive range of BSA repair manuals and online maintenance procedures available for professional mechanics and DIY car enthusiasts. Our repair manual for the BSA A50 and A65 repair manual is here to help you through every stage of servicing or fixing your motorcycle.