SUZUKI KEY 17462-93990 REC17462-93990

Function and technical context

The key is a mechanical transmission element that works on the propeller shaft or the impeller shaft of the water pump, guaranteeing the integral connection between the shaft and the hub of the rotating part. Its function is to transmit engine torque without slippage, acting at the same time as a safety element: in the event of impact or overload, the key absorbs the effort to protect more expensive components such as the drive shaft or crankshaft. In Suzuki outboard engines of the small displacement range where this part is used, the correct condition of the key is essential for the operation of the cooling system and propulsion; A worn, sheared or missing key causes a total loss of propulsion or overheating of the engine due to failure in the pumping of cooling water.

When to replace this part?

The most common symptoms of a damaged key are: abnormal vibration in the propeller, sudden loss of propulsion without apparent cause in the shaft, or—if it affects the water pump—temperature alarm due to overheating when the impeller is lost. This component must be inspected during each seasonal maintenance and replaced immediately after any impact of the propeller against a solid object, since the shearing may be partial and not always visible to the naked eye. Changing it preventively after a strong blow is a low-cost measure that prevents serious breakdowns at sea.

Suzuki engine compatibility