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9. KICK STARTER/DRIVE PULLEY/
CLUTCH/DRIVEN PULLEY VITALITY 50
SERVICE INFORMATION
GENERAL INSTRUCTIONS
· Avoid getting grease and oil on the drive belt and pulley faces.
SPECIFICATIONS VITALITY 50
Item Standard (mm) Service Limit (mm)
Drive pulley collar O.D. 19.9619.974 19.94
Movable drive face I.D. 20.01120.052 20.6
Weight roller O.D. 15.9216.08 15.4
Clutch outer I.D. 107107.2 107.5
Driven face spring free length 87.9 (2-stroke) 82.6 (2-stroke)
Driven face spring free length 95 (4-stroke) 90 (4-stroke)
Driven face O.D. 33.96533.985 33.94
Movable driven face I.D. 34.034.25 34.06
Drive belt width 18 17
TORQUE VALUES
Drive face nut 3.54.0kg-m
Clutch outer nut 3.54.5kg-m
Clutch drive plate nut 5.06.0kg-m
SPECIAL TOOLS
Universal holder E017
Clutch spring compressor E034
TROUBLESHOOTING
Poor performance at high speed or
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
· Faulty driven face
Engine stalls or motorcycle creeps
· Broken clutch weight spring
9-2