Haynes Yamaha 250 350 Twins Owners Workshop Manual 247cc 347cc 1970 to 1979 - Owners Workshop Manual Author:John Haynes Haynes offers the best coverage for cars, trucks, vans, SUVs and motorcycles on the market today. Each manual contains easy to follow step-by-step instructions linked to hundreds of photographs and illustrations. Included in every manual: troubleshooting section to help identify specific problems; tips that give valuable short cuts to make the j... more »ob easier and eliminate the need for special tools; notes, cautions and warnings for the home mechanic; color spark plug diagnosis and an easy to use index.« less