This comprehensive service and repair manual provides a detailed guide for servicing and maintaining the 1970 and 1971 AMF High-Performance Series XX Ski-Daddler snowmobiles. It covers all models within the Series XX classification, including the SD15M28A (292), SD15M26A (340), SD15M22B (399), SD15M23B (439), SD18M29A (650), and SD18M30B (793). This manual is designed for authorized AMF Ski-Daddler Dealers, Distributors, and technicians and offers in-depth instructions for a wide range of maintenance tasks, including engine, transmission, suspension, and electrical system components. It provides detailed diagrams and clear instructions for disassembly, rebuilding, and reassembly, allowing technicians to effectively diagnose and repair any issue they may encounter. The manual also includes valuable information on troubleshooting common problems, ensuring efficient and effective repair solutions.

The AMF Ski-Daddler was a popular and innovative snowmobile produced by American Machine & Foundry (AMF) in the 1960s and early 1970s. Designed to cater to a growing market for recreational winter activities, the Ski-Daddler offered a unique combination of affordability, maneuverability, and ease of use. Powered by a 299cc two-stroke engine, the Ski-Daddler was known for its nimble handling and ability to navigate through tight spaces and challenging terrain. It was also relatively compact and lightweight, making it easy to transport and store. The Ski-Daddler proved to be a successful model for AMF, with various iterations released throughout its production run. Notable features of the Ski-Daddler included its innovative suspension system, which utilized a pair of skis mounted on independent spring/shock absorbers for a smooth ride. The Ski-Daddler also incorporated a distinctive "boomerang" design for its skis, which were said to provide superior traction and maneuverability in deep snow. The Ski-Daddler was available in a variety of colors and trim levels, with some models even featuring a single-passenger seat for extra comfort. Despite its popularity, production of the Ski-Daddler ceased in the early 1970s as AMF shifted its focus to other ventures. However, the Ski-Daddler remains a significant model in the history of snowmobiling, known for its affordability, user-friendliness, and enduring design.