This comprehensive service and repair manual covers Yamaha SR540 and SRV540 snowmobiles manufactured between 1981 and 1991. It provides detailed instructions and illustrations for a wide range of maintenance and repair procedures, making it an invaluable resource for both experienced mechanics and DIY enthusiasts. The manual includes sections covering general information, periodic maintenance and tune-up procedures, engine and transmission systems, fuel, lubrication, and cooling systems, electrical systems, drive systems, suspension, steering and frame, controls and indicators, and a troubleshooting guide. You'll find detailed diagrams to help you understand the workings of each system, as well as step-by-step instructions for disassembling, repairing, and reassembling your snowmobile. This manual covers everything from basic maintenance tasks to complex engine overhauls, offering everything you need to keep your Yamaha snowmobile in top condition.