10. DRIVE PULLEY/DRIVEN PULLEY/CLUTCH MXU550EXi/MXU500i SERVICE INFORMATION GENERAL INSTRUCTIONS · The drive pulley, clutch and driven pulley can be serviced with the engine installed. · Avoid getting grease and oil on the drive belt and pulley faces. Remove any oil or grease from them to minimize the slipping of drive belt and drive pulley. · Do not apply grease to the movable drive face and weight rollers. SPECIFICATIONS Unit: mm (in) Item Standard Service Limit Drive belt width 34.1 (1.364) 30.8 (1.232) Clutch shoe thickness 1.5 (0.06) 1 (0.04) Driven pulley spring 124.3 (4.972) 121.3 (4.852) Weight roller O.D. 29.9 (1.196)30.1 (1.204) 29.5 (1.18) TORQUE VALUES Drive pulley nut 14 kgf-m (140 N-m, 100.8 lbf-ft) Apply oil to the threads Clutch nut 14 kgf-m (140 N-m, 100.8 lbf-ft) Driven pulley nut 10 kgf-m (100 N-m, 72 lbf-ft) Apply oil to the threads Driven pulley assembly plate nut 7.5 kgf-m (75 N-m, 54 lbf-ft) SPECIAL TOOLS Oil seal & bearing install A120E00014 Bearing puller A120E00037 Y-type holder A120E00056 Drive pulley holder A120E00058 Driven pulley spring compressor A120E00059 Lock nut wrench A120E00079 TROUBLESHOOTING Engine starts but ATV won`t move Lack of power · Worn drive belt · Worn drive belt · Broken ramp plate · Weak driven face spring · Worn or damaged clutch lining · Worn weight roller · Broken driven face spring · Faulty driven face Engine stalls or ATV creeps · Broken clutch weight spring 10-2