135
14. Drive Face/Clutch/Driven Wheel/Kickstart Mechanism
Preparing documents -------------------14.1 Clutch/driven wheel ---------14.5
Failure diagnosis --------14.2 Breakdown of clutch and driven wheel -----14.6
Left crankcase cover ----------------14.3 Installation --------------------14.7
Drive face ----------------------------14.4 Kickstart mechanism------------14.8
14.1 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
Unit: mm
Item
Standard
Limit for use
Inner diameter of right half-driven wheel
20-20.05
20.05
Outer diameter of the sliding sleeve
19.94-19.98
19.94
Width of the triangle belt
18
18
Thickness of the clutch facing
3.5
3.5
Inner diameter of the clutch sleeve
107-107.2
107.2
Free length of the clutch spring
93-97
93
Outer diameter of the bushing on the right half driven wheel
33.95-33.975
33.95
Outer diameter of the sliding sleeve on the left half driven
wheel
34.025-34.064 34.064
Outer diameter of the ball
15.8-16.2
15.8
14.2 Failure diagnosis
No run after engine startup Insufficient horsepower Vibration during driving
Abrasive triangle belt Abrasive triangle belt Ruptured clutch facing spring
Damaged driven wheel Distorted clutch spring
Broken or damaged clutch facing Abrasive ball
