The Mercury Mariner 25 BIGFOOT HP 4-stroke, produced starting in model year 1998, represents a robust and reliable option for marine propulsion. Designed with durability and performance in mind, this engine is engineered to meet the demands of various boating applications. Its 4-stroke technology ensures efficient operation and reduced emissions, making it a sound choice for recreational and professional use alike. The BIGFOOT designation typically indicates enhanced torque and thrust capabilities, suitable for heavier loads or challenging water conditions.

This factory service repair manual provides comprehensive guidance for maintaining and repairing your Mercury Mariner 25 BIGFOOT HP 4-stroke. It is structured to serve as an accessible reference for both professional mechanics and do-it-yourself enthusiasts. Inside, you will find detailed, step-by-step instructions for all installation, removal, disassembly, assembly, repair, and diagnostic procedures. The manual covers all aspects necessary to keep your engine in optimal working condition, ensuring its longevity and performance.