PIÑON FORWARD 67F-45560-00 REC67F-45560-00

Function and technical context

The 67F-45560-00 pinion is part of the power transmission system in Yamaha outboard motors, acting as a drive gear in the gearbox. This component transmits the rotation of the crankshaft to the propeller, allowing the power generated in the cylinders to be converted into propulsive thrust. Its correct operation is essential to maintain smooth acceleration, precise gear changes and efficient propulsion. Wear or damage to this pinion causes loss of traction, metallic noises in the transmission and, in extreme cases, inability to engage gear.

When to replace this part?

Symptoms of deterioration include an audible “crunching” or “screeching” noise during gear shifting, difficulty engaging forward or reverse, and abnormal vibrations in the transmission while cruising. Although there is no fixed replacement interval, it is recommended to inspect the condition of the sprocket during each annual maintenance check, especially if the aforementioned symptoms are detected. Replacing this component preventively on heavily used boats prevents sudden breakdowns on the water and costly emergency gearbox repairs.

Equivalent manufacturer part numbers