Yamaha - Body, throttle 3 - 69J-13753-01-00Yamaha Throttle Body 3 Air Intake Control 69J 13753 01 00 Overview When youre dialing in a Yamaha motor, throttle bodies are a big part of how the engine feels on the water. This unit controls airflow into the engine, and if its not right, youll notice it in hesitation or uneven throttle response. Ive seen engines smooth out instantly once a worn throttle body is replaced. Its one of those parts that keeps everything feeling tight and responsive when