Manuals are in used condition and may have Initials, names grease or dirt on or in them. Some may have slight moisture damage or pages may be torn or missing. In all cases, we attempt to send as complete as possible. The Detroit Diesel Series V-71 Engine Service Repair Shop Manual 3-71 4-71 6-71 is a comprehensive guide designed specifically for the maintenance and repair of Detroit Diesel engines. It provides detailed instructions and diagrams for servicing various engine models within the V-71 series. This manual is a valuable resource for boat owners, mechanics, and enthusiasts looking to keep their engines in top condition, ensuring optimal performance and longevity. With clear instructions and essential information, this shop manual is a must-have for anyone working on Detroit Diesel engines.