Please check your impeller bushing. It is located behinf the impeller pully. It mounts to the housing. If you grab the impeller pully and there is up and down play, the bushing needs replacement.It is a cheap repair. You need to remove the pully and remove the impeller fasteners t oslide the impeller forward to have access to the bolts. If it i worn the belts can't be properly adjusted.
I am trying to follow what you are telling me, but I cant. I guess I would have to take a look inside the machine and try to follow from there.
No one else has any instructions on this? I cant find any on-line!