YG125-30A Maintenance Manual
Inspection and adjustment
24
3
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Inspection and adjustment
Maintenance notice
Brake system
Spark plug
Running system
Lubricating oil
Clutch control line
Oil output tank
Driving chain
Timing phase
Battery Checking
Cylinder pressure
Replacement of Fuse
Timing chain tension
Brake lamp adjustment
Valve clearance
Headlamp dimming
Air filter
Steering stem bearing
Idle speed
Suspension system
Throttle control
Bolts, nuts and fasteners
Maintenance notice
The parts that are washed should proceed thru relevant examination work
．
The purpose is to confirm that the part whether
it needs repair or replace
．
The examination method is divided into three methods include direct examination
，
testing
examination and detecting examination
Direct examination method
This method does not need instrument and other tools
，
it checks and determines the technologic state of part just
according to the sense organs of human being
．
The way is simple and easy to use
，
it is used wide in motorcycle
maintenance.
Testing examination method
This way is a way that test the size of part and change of geometric form with gauge and instrument
，
and make contrast to
the allowed limit with the data to confirm the technologic state of part
．
The accuracy of this way is high
，
but before test
should check the precision of gauge and instrument carefully and choose the testing position reasonably.
Detecting examination method
This way can test the invisible flaws of part
．
In motorcycle maintenance, generally adopt the best easy way--dipping oil to
beat by hammer
，
that means putting the parts into coal oil or diesel oil to soak several minutes then take out and wipe
the surface
，
spread talcum powder on the surface of parts uniformly
，
beat its nonworking sue face lightly by small
hammer. owing to beating will cause versatility of part, if part has crack
，
then the oil sludge that dipped into crack
originally will splash due to beating and versatility
，
then the talcum powder on surface will be dyed yellow
，
so one
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