PROPELLER SHAFT 688-45611-00

Function and technical context

The propeller shaft is the fundamental component that transmits the power of the marine engine directly to the propeller, allowing the propulsion of the boat. This shaft works in the transmission and propulsion system, supporting severe mechanical loads and continuous rotations at high speeds. Its correct operation is critical to guarantee propulsion efficiency and directional stability of navigation. Wear or damage to the shaft can cause excessive vibration, loss of power, or in extreme cases, the complete inability to propel the boat.

When to replace this part?

Typical symptoms of propeller shaft deterioration include abnormal vibrations in the stern of the boat, metallic noises during navigation, or a progressive loss of acceleration ability. It is recommended that you visually inspect the shaft at least once a year and check its alignment during seasonal maintenance, especially after sailing in shallow water or after impacts with submerged objects. Preventive replacement of the shaft prevents breakdown at sea and guarantees maximum safety and performance of your Yamaha engine.

Equivalent manufacturer part numbers