When I bolt on pump, it wont spin....spins free unbolted to hull.

[Chips]

I'm also having this problem w/ one of my pumps, but I didn't do anything to the engine. It was rebuilt and after I reinstalled according to specs (torqued to 33 N-m), I can't rotate it (plugs out) with both hands. I was very careful about the rubber driveshaft bumper and I know I didn't loose any shims. What's going on?

Jim

I ended up loosening all the engine mounts and moving the engine as far back by hand and then installed a fresh neoprene seal for the pump....tightened it down to the hull and then tightened the motor mounts. It works fine now. Now just need to see if my new DESS post fixed my engines cutting off randomly...

 

[Chips]

So I installed the DESS post and it fixed the engine cutting out problem! Woo hoo! But then I think I blew my port motor up....oh well, I had at least 15 minutes of good running time with this boat. Back to the drawing board...lol I will dig into it tomorrow and see what I can find, but it sounded pretty bad...

 

[Sportster-2001-951C-Stock]

Don't tell the wife!!!! Wondering if you dissected the DESS post.... Green copper oxide inside?