Originally Posted by
Marty H.
Mine had the clicking early-on after 2 gallons was run through it. The clicking got louder and I removed the backplate (after Horizon's approval)and saw a deformation in the crank pin. Horizon rebuilt it and now I'm almost through the second gallon after the rebuild (over 4 gallons total) and so far so good. I used dino oil for break-in and Klotz afterward.