Yamaha Carburetor Assembly 1 787-14501-00-00. Overview. The Yamaha Carburetor Assembly 1 787-14501-00-00 is a premium replacement component designed to restore and enhance the performance of your marine engine. Engineered to meet Yamaha's exact specifications, this carburetor assembly ensures a precise fit and seamless integration with your engine system.. It effectively addresses common issues such as poor idling, fuel leaks, and reduced engine power. By delivering a balanced fuel-air mixture,