FORWARD DRIVE PIN 6K5-45560-00

Function and technical context

The forward gear is a critical gear in the Yamaha outboard motor transmission system, responsible for transferring power from the crankshaft to the propeller in the forward direction. This component works in constant mesh with other pinions within the gearbox, supporting significant torque loads during acceleration and cruising. Its correct condition is essential to maintain efficient power transmission and avoid slipping, loss of traction or cascading damage to the transmission.

When to replace this part?

Gear pinion wear is usually manifested by abnormal metallic noises in the gearbox, gradual loss of propeller grip, or difficulty engaging forward gear. Although these gears have considerable durability if the transmission oil is kept in good condition, it is advisable to check their condition during each seasonal maintenance, especially after navigation in waters with sediment or after frequent sudden gear changes. Preventive replacement before a long trip prevents breakdowns at sea and prolongs the life of the rest of the gearbox components.

Equivalent manufacturer part numbers