The Ski-Doo OEM QRS Adjuster Torquing Tool (Part Number: 529036147) is a specialized factory tool designed to securely remove, install, and properly torque the QRS driven pulley adjustment screw on Ski-Doo snowmobiles. It ensures a precise fit and allows you to safely reach the factory-recommended torque specification of 74 lb·ft without damaging the clutch components.