@Indyteecee
The free PDF version of the manual can be downloaded from the Resources Section (link at the top of the page)
https://forum.ih8mud.com/resources/1997-lx450-fsm.85/
The power steering pump on the LX-450 is a gear driven pump. There are other belts and idler pulleys that can be potential problems so removing all the belts to test can be very helpful in determining the source of the noise.