FULL QUEUE 1667-901110

Function and technical context

The complete drive is the marine transmission assembly that integrates the reduction box and the propulsion group in Mercury outboard engines. This component constitutes the power transfer system from the engine crankshaft to the propeller, allowing engine revolutions to be reduced through a reduction ratio of 2.07:1 to optimize performance and navigation efficiency. The 6-tooth selector facilitates gear changes (forward, neutral, reverse) precisely and reliably, being critical for the maneuverability and control of the vessel. A breakdown or wear in the tail has a direct impact on the propulsion capacity, speed stability and safety of operation in the water.

When to replace this part?

Symptoms of tail wear include difficult or slow gear changes, abnormal vibrations while cruising, progressive loss of traction, metallic noises in the transmission, and water entering the engine compartment. It is recommended to carry out a visual and functional inspection of the tail every sailing season, paying attention to the condition of the transmission oil and the gear play. Preventive replacement of the tail prevents sudden breakdown during the voyage and costly repairs at the dock, being especially important in boats with intensive use or in cold waters that accelerate component wear.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers