shaft seal

Hello all, 2003 SD 4-tec wake 1500 non supercharged After 20 years of skiing I had a one time brain fart doing a prep before an upcoming trip w the family and the ski. I did the dreaded turned the engine off first and forgot about the water for long enough to flood to the engine. It was bad...

I have a 1989 seadoo sp and my motor mounts went bad . this caused my seal that goes thru the hull to leak due to the mis aligned shaft. how do i replace the seal and what part do i need?