KYMCO MX’er 125 - Page 102

9. DRIVE AND DRIVEN PULLEYS
9
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2
MX’er SYSTEM
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• The drive pulley, clutch and driven pulley can be serviced with the engine installed in the frame.
• 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.
SPECIFICATIONS
Item
Standard (mm)
Service Limit (mm)
Movable drive face bushing I.D.
27.0
27.021
2
7
.06
Drive face collar O.D.
26.97
26.99
2
26
.94
Drive belt width
20.0
21.0
19.0
Clutch lining thickness

2.0
Clutch outer I.D.
130
.0
130
.2
130
.5
Driven face spring free length

83.2
Driven face O.D.
33.965
33.485
33.94
Movable driven face I.D.
34.000
34.025
34.06
Weight roller O.D.
20.95
21.1
20.42
TORQUE VALUES
Drive face nut 5.5 6.5kgf-m
Clutch outer nut 5.0 6.0kgf-m
SPECIAL TOOLS
Universal holder E017 Clutch spring compressor E027
Bearing puller E008 Oil seal and bearing install E014
TROUBLESHOOTING
Engine starts but motorcycle 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 • Fouled drive face
Engine stalls or motorcycle creeps
• Broken clutch weight spring