This comprehensive service and repair manual covers the 1975 Johnson Evinrude snowmobiles, specifically the alternate firing models: 399 35 HP, 426 40 HP, and 646 50 HP, including the JX and Skimmer sleds. It provides detailed information on all aspects of these snowmobiles, from basic maintenance and troubleshooting to complex repairs. This manual is a valuable resource for anyone who owns or works on these classic machines, offering step-by-step instructions, diagrams, and specifications to help ensure proper repair and long-lasting performance. The content encompasses a wide range of topics, including the engine, transmission, electrical system, suspension, and more.

The 1975 Johnson Evinrude snowmobile Service Repair Manual is a comprehensive guide for maintaining and repairing a range of popular snowmobile models from the era. It covers the Alternate Firing 399 35 HP, 426 40HP, and 646 50HP engines, along with the JX and Skimmer models. These snowmobiles were renowned for their ruggedness and performance, appealing to both recreational riders and those seeking more demanding off-trail adventures. The manual provides detailed information on every aspect of these machines, from routine maintenance tasks like oil changes and spark plug replacements, to complex engine rebuilds and electrical system troubleshooting.

This manual is an invaluable resource for anyone who owns or works on these classic Johnson Evinrude snowmobiles. It features clear and concise instructions, accompanied by numerous illustrations and diagrams, making it easy to understand even for novice mechanics. The manual covers topics such as engine operation, cooling systems, fuel systems, electrical systems, clutches, tracks, and suspension components. It also includes detailed troubleshooting charts, wiring diagrams, and parts lists, making it a comprehensive and indispensable tool for any owner or mechanic seeking to keep their vintage snowmobile running smoothly. Whether it's for general upkeep, tackling specific repairs, or restoring a classic snowmobile to its former glory, this manual empowers users to confidently understand and maintain their vehicle.