ALUMINUM PROPELLER 8.50X8 RIGHT

Function and technical context

The 8.50x8 right-hand aluminum propeller is the direct propulsion element of the outboard motor, responsible for transforming the mechanical power of the crankshaft into hydraulic thrust. It works in the marine transmission system, installed on the tail shaft of the engine, where it must withstand traction forces, vibration and continuous corrosion due to contact with salt or fresh water. Its fixed pitch (8 inches) and diameter (8.50 inches) geometry are calibrated to maximize propulsion efficiency in small displacement vessels; Any wear, cavitation or breakage in the blades significantly reduces speed, increases fuel consumption and can cause excessive engine vibration with the risk of damage to the mainframe.

When to replace this part?

Aluminum propellers present characteristic symptoms of wear such as progressive loss of revolutions at maximum throttle, abnormal vibration in the hull, formation of algae or irregular incrustations that cause unbalance, or visible cracks and deformations on the leading edges of the blades after grounding or impacts with submerged objects. It is recommended to inspect the condition of the propeller during each seasonal maintenance - before setting sail after winter storage - and replace it preventively if it shows more than 10% loss of material on any blade; This replacement avoids progressive performance degradation and costly motor repairs due to mechanical overload.

Equivalent manufacturer part numbers