9. DRIVE AND DRIVEN PULLEYS ATV 150/125 INSPECTION Check each weight roller for wear or damage. Measure each weight roller O.D. Service Limit: 20.42 mm (0.8168 in). Measure the movable drive face bushing I.D. Service Limit: 27.06 mm (1.0824 in) Check the drive pulley bushing for wear or damage. Measure the O.D. of the drive pulley bushing sliding surface. Service Limit: 26.94 mm (1.0776 in) 9-5