Thanks for the quick response. I can see that the pump only has about 0.125" more adjustment to make the belt tighter but don't think that will do much. The motor and pump pulleys spin quite freely so I don't think that's the problem. Also the big main pulley under the agitator can be moved, if that indicates anything. What did you mean by the "lower bearing"? Exactly where is that located? Where is the brake located? I have part diagrams but not sure where to look.