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 job 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.    This repair manual covers Yamaha XJ650 UK 1980-1984; XJ650 Maxim US 1980-1983; XJ650M Midnight Maxim US 1981; XJ650R Seca US 1982; XJ750 UK 1981-1984; XJ750 Maxim US 1982-1983; XJ750M Midnight Maxim US 1983; and XJ750R Seca US 1981-1983.