This manual is a comprehensive guide for owners of the Clinton K990 9.9 hp outboard motor. It contains detailed information on operation, maintenance, and troubleshooting, as well as a complete parts list. The manual covers all aspects of using and caring for your Clinton K990 engine, from basic operation to advanced repair procedures. With clear illustrations and easy-to-follow instructions, this manual is an essential resource for anyone who owns a Clinton K990 outboard motor.

The Clinton K990 was a 9.9 horsepower, air-cooled outboard motor produced by the Clinton Machine Company, a renowned manufacturer of small engines and power equipment. The K990 was designed for recreational boating enthusiasts seeking a reliable and powerful option for powering smaller boats. Its air-cooled design made it particularly suitable for use in warmer climates, as it eliminated the need for a cooling system that could be prone to overheating in extreme temperatures. The K990 featured a robust construction, with a cast iron cylinder block and aluminum crankcase, ensuring durability and longevity. The engine was known for its smooth operation and efficient fuel consumption, making it a popular choice for fishing, cruising, and other recreational activities. The Clinton K990 was equipped with a range of standard features that contributed to its user-friendliness and ease of maintenance. These features included a manual start system, a single-cylinder design for simplicity, and a built-in fuel tank for convenience. The engine was also designed with a focus on accessibility, allowing users to easily access key components for routine maintenance tasks. The K990's popularity stemmed from its blend of performance, reliability, and affordability. Although no specific year of production is available, the K990 was likely produced in the 1960s and 1970s, during a period when Clinton Machine Company was a leading manufacturer of small outboard motors. While the K990 is no longer in production, its legacy continues to be appreciated by vintage boat enthusiasts and collectors seeking a piece of history.