Maintenance Information; Trouble Shooting - Sym Fiddle 50 Service Manual

7. "V" TYPE BELT DRIVE SYSTEM/KICK-STARTER

Maintenance Information

Precautions in Operation
The surfaces of drive belt and driven pulley must be free of grease.
Specification
Item
Driving belt width
ID of movable driving pulley
OD of movable driving pulley boss
OD of weight roller
ID of clutch outer
Thickness of clutch weight
Free length of driven pulley spring
OD of driven pulley
ID of movable driven pulley
ID: Inner Diameter
OD: Outer diameter
Torque Values:
Movable drive face: 3.8kgf-m
Driven pulley: 5.5kgf-m
Clutch outer: 3.8kgf-m

Trouble Shooting

Engine can be started but motorcycle can
not be moved
1. Worn drive Belt
2. Worn ramp plate
3. Worn or damaged clutch weight
4. Broken driven pulley spring
Shudder or misfire when drive
1. Broken clutch weight
2. Worn clutch weight
7-2
This chapter Contents
Standard value(mm)
18.0
20.035~20.085
20.010~20.025
15.92~16.08
107.0~107.2
4.0~4.1
98.1
33.965~33.985
34.000~34.025
Special Service Tools
Clutch spring compressor
Bearing driver
Clutch nut wrench 39x41 mm
Bearing driver accessory 39x41 mm
Universal holder
Driver
Insufficient horsepower or poor high
speed performance
1. Worn drive belt
2. Insufficient spring capacity of driven pulley
3. Worn weight roller
4. Driven pulley operation un-smoothly
Limit(mm)
16.5
20.120
19.98
15.40
107.5
2.0
92.7
33.94
34.06