ALUMINUM PROPELLER 8.50X7 RIGHT

Function and technical context

The aluminum propeller is the fundamental propulsion element of the marine transmission system, responsible for converting the rotary energy of the engine into thrust that moves the boat through the water. In this 8.50 x 7 inch right-hand configuration, it works in conjunction with the gearbox and tailshaft, being critical to propulsive efficiency and overall boating performance. Its wear or damage due to impact against submerged objects causes loss of traction, abnormal vibrations in the hull, excessive fuel consumption and a significant reduction in operating speed.

When to replace this part?

Aluminum propellers present progressive wear of the blades, erosion on the leading edges and loss of pitch over time of intensive navigation, symptoms that manifest themselves as loss of maximum revolutions, insufficient traction during acceleration or constant vibrations at cruising speed. It is recommended to inspect the propeller at least once per navigation season, replacing it preventively if visible damage is detected, active corrosion on the blades or if the boat does not reach nominal revolutions with the engine at maximum performance. Preventive replacement prevents secondary gearbox and driveshaft breakdowns, which are substantially more expensive repairs than replacing the propeller.

Compatibility with Yamaha engines

Equivalent manufacturer part numbers