Control Cable Lubrication; Driver Belt; Ignition Timing; Throttle Valve Operation - Sym RS-50 Service Manual

2. SERVICE MAINTENANCE INFORMATION

Control Cable Lubrication

Remove the throttle control and the brake cables
periodically, and lubricate the moving parts of the
cables thoroughly.

Driver Belt

Remove left crankcase cover.
Check if the belt is crack or worn out.
Replace the belt if necessary.
Measure the driving belt width
Allowable limit: 16.5mm

Ignition Timing

Caution
C.D.I ignition timing can not be adjusted. If
the ignition timing is incorrect, check the
C.D.I. device and the alternator and replace
damaged components.
Check ignition timing with standard
instrument.
Remove the right-side cooling fan cover.
Check ignition timing with the timing light.
When engine speed setting to 1800 rpm, and if
the mark aligns with "F" mark, then it means that
the ignition timing is correct.

Throttle Valve Operation

Check if each steering positions are operated in
smooth, and handle bar if its operation is smooth
as the throttle valve wide opening or fully closed.
Check throttle cable and replace it if deteriorated,
twisted or damaged.
Lubricate the cable if operation is not smooth
Measure throttle valve handle free play.
Free play：2~6 mm (1/8-1/4 in)
Loosen the mounting nut, and turn the free play
adjustment nut of the throttle valve handle for
adjustment.
Replace the cable if it can not be adjusted.
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This chapter Contents
Tooth face
Ignition lamp "F" mark
Belt width