Got to adjust the redi bolt. loosen the two 3_4" bolts at the top and two 1_2" bolts on bottom. Slow the rotor all the way down till it stops then adjust.adjust till the rotor sheave measures 3 1_4 " spin rotor after adjusting aways to see howfar the sheave moved. When you reach 3 1_4" thighten bolts .