Service Information; Troubleshooting - KYMCO MXU 500 Owner's Manual

10. DRIVE PULLEY/DRIVEN PULLEY/CLUTCH

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
Item
Drive belt width
Clutch shoe thickness
Driven pulley spring
Weight roller O.D.
TORQUE VALUES
Drive pulley nut
Clutch nut
Driven pulley nut
Driven pulley assembly plate nut
SPECIAL TOOLS
Oil seal & bearing install
Bearing puller
Y-type holder
Drive pulley holder
Driven pulley spring compressor
Lock nut wrench

TROUBLESHOOTING

Engine starts but ATV won't move
Worn drive belt
Broken ramp plate
Worn or damaged clutch lining
Broken driven face spring
Engine stalls or ATV creeps
Broken clutch weight spring
Standard
34.1 (1.364)
1.5 (0.06)
124.3 (4.972)
29.9 (1.196)阡30.1 (1.204)
14 kgf-m (140 N-m, 100.8 lbf-ft) Apply oil to the threads
14 kgf-m (140 N-m, 100.8 lbf-ft)
10 kgf-m (100 N-m, 72 lbf-ft)
7.5 kgf-m (75 N-m, 54 lbf-ft)
A120E00014
A120E00037
A120E00056
A120E00058
A120E00059
A120E00067
Lack of power
Worn drive belt
Weak driven face spring
Worn weight roller
Faulty driven face
MXU 500
Unit: mm (in)
Service Limit
30.8 (1.232)
1 (0.04)
121.3 (4.852)
29.5 (1.18)
Apply oil to the threads
10-2