This workshop service repair manual covers the Mercury Mariner 150 HP Outboard, manufactured between 1992 and 2000. This robust 2-stroke outboard engine features a V6 configuration with a displacement of 2070 cc, producing 150 HP at 5000 RPM. Its design incorporates three 2-barrel carburetors and a CDI ignition system, ensuring reliable performance on the water. The engine is water-cooled and designed to run on unleaded gasoline, with fuel mixture options for pre-mix or autolube systems depending on the specific model variation. This powerful and dependable outboard is engineered for a wide range of marine applications. The purpose of this official factory manual is to provide comprehensive guidance for the maintenance, repair, and servicing of the Mercury Mariner 150 HP Outboard. It details essential procedures, including lubrication requirements for the gearcase, recommended spark plug types, and the replacement interval for the water pump impeller. Technical specifications, troubleshooting tips, and safety guidelines are also included to assist owners, mechanics, and technicians in keeping the engine in optimal working condition. This manual serves as an indispensable resource for ensuring the longevity and efficient operation of your Mercury Mariner outboard.