This manual covers the Mercury Mariner 135 HP Outboard, a 2-stroke, 4-cylinder engine produced from 1992 to 2000. Engineered for reliability and performance, this first-generation Mariner model delivers 135 horsepower, featuring a carbureted fuel system and CDI ignition. Its robust construction and power trim and tilt system make it a capable choice for various marine applications. The engine boasts a displacement of 135 cubic inches, with a bore of approximately 3.62 inches and a stroke of approximately 2.95 inches, utilizing a water-cooled system for efficient operation. The purpose of this factory service manual is to provide comprehensive repair and service information in English for the Mercury Mariner 135 HP Outboard. It details essential maintenance procedures, troubleshooting guides, technical specifications, and safety guidelines necessary for the upkeep and repair of the engine. Owners, mechanics, and technicians will find the information invaluable for ensuring the optimal performance, longevity, and safe operation of their Mercury Mariner outboard.