This workshop service manual covers the Mercury Mariner 3.3 HP Outboard motor. This 2-stroke, water-cooled outboard features a carburetor fuel system and CDI ignition, designed for reliable performance in various marine applications. Its compact and lightweight design, coupled with a tiller handle and twist grip throttle, makes it an agile and user-friendly option for smaller vessels. The motor is equipped with a manual recoil starter and offers forward, neutral, and reverse gear selection for versatile maneuverability. This comprehensive manual provides essential information for the maintenance and repair of your Mercury Mariner 3.3 HP Outboard. It details critical procedures, including lubrication requirements such as the 50:1 oil mix ratio for 2-stroke outboard oil, and outlines the CDI ignition system and carburetor adjustments. Technical specifications, troubleshooting guidance, and safety precautions are also included, empowering owners and technicians to ensure optimal performance and longevity of the outboard motor.