KYMCO Super 8 50, Service Manual, Page: 104 / 185

9. DRIVE AND DRIVEN PULLEYS
9-1
Super 8 50
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.
SPECIFICATIONS
Item Standard (mm) Service Limit (mm)
Movable drive face bushing I.D. 23.989~24.025 24.06
Drive face collar O.D. 23.960~23.974 23.94
Drive belt width 17.5 16.5
Clutch lining thickness

1.5
Clutch outer I.D. 107.0-107.2 107.5
Driven face spring free length

97
Driven face O.D. 33.965-33.485 33.94
Movable driven face I.D. 34.0-34.025 34.06
Weight roller O.D. 15.920~16.080 15.4
TORQUE VALUES
Drive face nut 5.5~6.5kgf-m
Clutch outer nut 3.5~4.5kgf-m
Clutch drive plate nut 5.0-6.0kg-m
SPECIAL TOOLS
Universal holder Clutch spring compressor
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
SERVICE INFORMATION ....................... 9-1 DRIVE BELT ........................................... 9-5
TROUBLESHOOTING .............................. 9-1 DRIVE PULLEY ..................................... 9-6
LEFT CRANKCASE COVER ................... 9-2 CLUTCH/DRIVEN PULLEY ................. 9-9
KICK STARTER ........................................ 9-2