ALUMINUM PROPELLER 9.25X12 RIGHT

Function and technical context

The 9.25×12 aluminum propeller is the fundamental propulsion element of the transmission system of your Yamaha engine, responsible for converting the power of the engine into movement of the boat. It works directly coupled to the engine output shaft, submerged in water, where it generates traction through the controlled rotation of its blades. Its right-hand rotation design is optimized for standard Yamaha engine configuration, ensuring maximum propulsive efficiency and directional stability. Aluminum provides resistance to marine corrosion while maintaining a controlled weight, essential characteristics for continued operation in salt or freshwater environments.

When to replace this part?

You should inspect the propeller regularly for dents, cracks, blade deformations, or surface erosion of the aluminum, common symptoms after collisions with submerged objects or prolonged operation without maintenance. It is recommended to check the condition of the propeller at least once a season or after unintentionally stranding, and replace it if it shows damage that compromises the symmetry of the blades. Replacing a damaged propeller preventively avoids excessive vibrations, loss of propulsion power and possible damage to the drive shaft during navigation.

Equivalent manufacturer part numbers