Yamaha YBR125 Custom, Service Manual

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3
INSP
ADJ
Adjustment of frdd play of throttle cable and check of spark plug
Note:
When the adjustment could not done by the steel
cable at throttle handle bar,it could be done by the
adjuster at the carburetor.
Second step(carburetor)
Loosen the locking screw
Adjust the adjuster
Screw in → Increase the dearance
Screw off → Decrease the dearance
Tighten the locking screws
Warning
After adjustment,start the engine, turn the steering
handle bar leftward and rightward,confirm that the idle
speed of engine will not increase.
Check of spark plug
1.
2.
Conduct the following check
Check electrode,pollution of insulation, damage under
burning, damage under burning for deposits
→ replace
the pollutant and deposit → clean with spark plug det-
ergent or steel wire brush.
Conduct the following check
Check the clearance a between center electrode and
side one
Out of specified value → adjust side eclectrode
Clearance between electrode:
0.6 0.7mm
Standard spark plug
NGK
CR6HSA
3 - 9