2007 Arctic Cat Y-12 90cc ATV Service Manual, Page 52Get this manual
44Spread the faces of the driven pulley by grasping the outer driven face tightly and pulling out away from the base (toward the clutch); then while holding the faces apart, insert the drive beltInstall the driven pulley and belt onto the driveshaft together DSC02305
48Install the drive face collar into movable drive face and the ramp plate taking care that the six roller guides are properly positioned
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45Install the centrifugal clutch housing over the centrifugal clutchdriven pulley assemblySecure with the flange nut tightened to specifications