This guy likes the sound of his own voice so the post is quite long but once into it I had to read all the way to the end, think y'all will too.
https://forums.sailboatowners.com/in...orvair.186175/
I check my auto bilge pump function regularly so no worries there but my cockpit mounted Whale Gusher 10 manual pump hasn't been touched since I bought the boat 12 years ago and who knows how long before that. The post has motivated me to perform a complete rebuild on principle, the necessary kit will be ordered this weekend.