Cust reported not emptying. He took all the hoses off and when i called to reassemble and test all ok. NFF. Coupling slightly worn so called to replace it now its not emptying again. If motor is turning i cant see why pump is not working. Any pointers? Dont have model number yet.
some of them had a plastic spacer to make motor shaft bigger to fit pump if pump jams for some reason these fail but just might have failed without
if pump ok you are only looking at blockages