SUZUKI PROPELLER SHAFT 57610-94402

Function and technical context

The propeller shaft is the transmission component that transfers the engine torque from the bevel gear of the tail box to the propeller hub, being the direct mechanical link between the engine and the propulsion of the boat. It works within the propulsion system of the outboard engine group, subjected to continuous torque, vibrations and the aggressiveness of the marine environment. A worn, bent or corroded shaft causes abnormal vibrations in the stern, loss of effective thrust and may compromise the sealing of the water seals, with the consequent risk of water entering the interior of the propulsion unit. Reference 57610-94402, updated under manufacturer number 57610-94403, is manufactured for Suzuki powertrains of the DF and DT series from 40 to 60 hp.

When to replace this part?

The most common symptoms of a bad propeller shaft are unusual vibrations noticeable in the handle or transom, excessive wear or play in the coupling with the propeller, and difficulty in removing or installing the propeller due to deformation of the shaft. It is advisable to inspect the shaft during each seasonal maintenance or after an impact with a solid object in the water, since a strong blow can bend the shaft even if the propeller has apparently minor damage. Replacing the axle preventively in the event of any sign of deformation or wear prevents major damage to the tail box and unwanted stops in navigation.