Product review (5 stars): Just replace it with the belt
Belt snapped, the tensioner seemed ok but thought if I am getting into it I should just replace  it.
I replaced the belt rollers and tensioner and cleaned the lint everywhere.  It runs great and I don't have to worry about anything for a minute.
Take a vacuum hose to the motor, and other componets.  The lint can eventually build up for noise problems and bearing failure.