This comprehensive John Deere Service Manual SM-2107 covers the 55, 56, 57, 65, 66, and 68 Riding Mowers models. The manual is an essential technical resource for maintenance, repair, and servicing of these classic John Deere riding mowers. It includes detailed sections on general information, engine specifications, fuel systems, electrical systems, clutch and guide bar chain oiler, and special service tools.

Organized with color-coded tabs for easy navigation, this binder-style manual provides clear illustrations, wiring diagrams, and precise specifications that help users perform tune-ups, adjustments, and repairs efficiently. The document dates from the late 1970s, reflecting authentic factory information and is a valuable collectible for John Deere enthusiasts as well as a practical guide for mechanics and owners of these vintage riding mowers.