This workshop service manual covers the 400 All-Terrain Vehicle (ATV) produced between 1985 and 1995, including 2x4, 4x4, and 6x6 model variants. Known for its rugged construction and versatility for recreational and light utility tasks, the 400 is a testament to the brand's long heritage in powersports. This manual provides comprehensive information to ensure the longevity and optimal performance of your ATV, reflecting the engineering quality and off-road capabilities characteristic of vehicles from this era. This document serves as an essential resource for owners, mechanics, and technicians, detailing all aspects of the 400. It includes in-depth coverage of engine overhaul, drivetrain maintenance, chassis and suspension repair, brake systems, and electrical diagnostics. With step-by-step repair instructions, troubleshooting guides, and critical technical specifications, this manual empowers users to perform routine maintenance, address common issues such as carburetor fouling or CVT belt wear, and conduct major overhauls. The goal is to facilitate the proper care and upkeep of your 1985-1995 400 ATV.