This workshop repair service manual provides comprehensive information for the Mercury Mariner 3.3 HP outboard motor. Designed for small boats and tenders, this water-cooled outboard motor delivers 3.3 horsepower and features an outboard gearcase with forward, neutral, and reverse gears. Its robust engineering ensures reliable performance for various aquatic applications. This manual serves as an essential guide for owners, mechanics, and technicians. It covers detailed maintenance procedures, including recommended fuel types and mixtures, along with troubleshooting guidance for common issues such as engine starting problems, fuel system concerns, and cooling system diagnostics. Technical specifications and safety guidelines are also included to ensure proper upkeep and operation.