GEAR SELECTOR 52-81644T REC664-45631-00

Function and technical context

The 52-81644T shift selector is an essential component of the transmission system on Mercury and Yamaha outboard engines. This piece acts as a direct intermediary between the rudder control and the propeller clutch mechanism, allowing precise engagement and disengagement of the propulsion. Its correct operation is essential to guarantee smooth, reliable and slip-free gear changes, ensuring total control of the boat in any navigation situation. A worn or damaged selector can cause sudden shifts, loss of synchronization or even the inability to engage reverse or forward gear, compromising operational safety.

When to replace this part?

Symptoms of selector wear include difficulty engaging gears, imprecise shifting, or slow shifting of the control. Although there is no fixed maintenance interval for this component, it is recommended to check its condition during each seasonal maintenance, especially after intense saltwater use or demanding boating. The preventive replacement of a worn selector avoids complex repairs during navigation and guarantees the operational reliability of your propulsion at any time.

Mercury/MerCruiser

Equivalent manufacturer part numbers