I have one of these filter robots. So far, I really like it, but it is
slowing down, stuttering, and sometimes stopping. It is about two years
old. I disassembled it partially, and there are no obvious obstructions,
and the vacuum gauge reads plenty of suction. No strings, rocks, or
anything.

The feet seem to be wearing. Other than that, not much signs of obvious
wear.

Anyone know of a website that has a guide to troubleshooting or an exploded
diagram ?

Anyone have any experience with servicing these?

Steve