How do you replace impeller shaft 1992 jet ski?

To replace the impeller shaft on a 1992 jet ski, start by removing the jet pump assembly by unscrewing the bolts securing it to the hull. Once the pump is removed, detach the impeller by unscrewing the nut and pulling it off the shaft. Next, remove the old impeller shaft from the housing, ensuring you also replace any seals or bearings as needed. Finally, install the new impeller shaft, reassemble the impeller and jet pump, and secure everything back in place.