I've read several threads and watched videos on how to do this. Some say they can swap it out in about 5 minutes after it's exposed.

The video shows an external shutoff arm that is raised to bring the internal slot high enough to hook the new shutoff valve into it.

Question: For the pumps that don't have an external arm what procedure is used to hook the new valve into the proper place?

A little concerned because some have mentioned the rpms can be excessive and no quick way to shut off if not installed properly.