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15. Drive Face/Clutch/Driven Wheel/Kickstart Mechanism
Preparing documents -------------------15.1
Failure diagnosis --------15.2 Breakdown of clutch and driven wheel -----15.6
Left crankcase cover ----------------15.3
Drive face ----------------------------15.4
15.1 Preparing Documents
During operation, the surface of the triangle belt cannot be stained with any grease that must be
removed. It helps avoid slipping between the triangle belt and the belt pulley as much as possible.
Function:
Drive face, clutch and driven wheel constitute stepless transmission. The triangle belt transfers torque
between the drive face and the driven wheel.
Preparing Principles
Inner diameter of right half-driven wheel
Outer diameter of the sliding sleeve
Width of the triangle belt
Thickness of the clutch facing
Inner diameter of the clutch sleeve
Free length of the clutch spring
Outer diameter of the bushing on the right half driven wheel
Outer diameter of the sliding sleeve on the left half driven
Outer diameter of the ball
15.2 Failure Diagnosis
No run after engine startup Insufficient horsepower Vibration during driving
Abrasive triangle belt
Damaged driven wheel
Broken or damaged clutch facing
Ruptured clutch spring
Item
wheel
Abrasive triangle belt
Distorted clutch spring
Abrasive ball
Stained surface of the driving pulley
Clutch/driven wheel ---------15.5
Installation --------------------15.7
Kickstart mechanism------------15.8
Standard
25.989-26.052
25.96-25.974
118-118.3
68-70
32.95-32.975
33-33.025
14.92-15.08
133
Unit: mm
Limit for use
17
1.8
Ruptured clutch facing spring
26.06
25.94
16
1.5
118.5
68
32.94
33.06
14.4
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