Yamaha - Propeller Shaft Drivetrain Component 6J9-45611-01-00. Overview. The Yamaha Propeller Shaft 6J9-45611-01-00 is one of those parts that takes all the engine's power and actually turns it into movement in the water. When this shaft gets bent or worn, you'll feel it right away through vibration or uneven performance at speed. It's constantly under load, especially when you're pushing hard or running in rough conditions. If your lower unit isn't running smooth, this is one of the first components worth checking.. Key Features. • Direct Power Transfer - Delivers engine torque straight to the propeller for consistent thrust.. • OEM Fit Precision - Built to Yamaha specifications for proper alignment and smooth rotation.. • Reduced Vibration - Helps maintain balanced operation and minimizes unwanted vibration.. • Heavy-Duty Construction - Designed to handle continuous load, torque, and marine environments.. Compatibility. Compatible with select Yamaha outboard engines using this propel