This service manual covers the Mercury Mariner Pro Max outboard motor, specifically models produced between 1992 and 2000, featuring a 225 HP engine. The Mariner Pro Max line is recognized for its robust engineering and reliable performance, making it a trusted choice for demanding marine applications. This manual provides comprehensive information to ensure the optimal operation and longevity of your Mercury outboard. The purpose of this manual is to serve as a complete reference for maintenance, repair, and troubleshooting of the Mercury Mariner Pro Max. It includes detailed procedures for routine maintenance, lubrication, tune-ups, as well as in-depth guidance on assemblies, disassemblies, and engine repair. Coverage extends to critical systems such as fuel, ignition, electrical, and exhaust, alongside body-related information. This resource emphasizes safety precautions, lists required special tools with illustrations and part numbers, and provides diagnostic procedures comparable to those found in authorized dealer service departments, empowering owners and technicians alike.