Yamaha YBR125 Custom, Service Manual

Page: 57 / 218

Check the brake liquid quantity/Exhausting air
3
INSP
A DJ
Check the brake liquid quantity
1.Conduct following checking
Brake liquid level
Check the liquid level when the brake liquid level cover
is in horizonal state.The liquid level should be above
in figure.
If the liquid level is below the lower position,sup-
ply the brake liquid until above the lower limit position.
Appionted brake liquid:genuine YAMAHA brake liquid DOT4
Note:
Do not mix and use brake liquid of different brand
DOT3 oil can be used if there is no No DOT4 oil.The
brake liquid will corrupt the painting surface and pla-
stic part.wipe off it inmedinately when splashing.
Exhausting air
Warning
When disassembling related parts of braked liquid,
you must confirm that other parts are locked and
sealed. Then the air can be released.
Procedures:
1.
2..
3.
4.
of releasing air
Remove the cover of brake liquid vat.
Remove the diaphragm of brake liquid vat
Mount plastic rubber pipe on front end of oil draining
Screw and place a oil container at the front end of
plastic rubber pipe.
After braking several times ,loosen the oil draining
screw about
1/2
turn when gripping brake handle,then
ghten it up again quickly. ti
Note:
Do not release the brake handle before tightening up
the oil draining screw again.
5. Repeat above procedures until the bubble is eliminated
completely.
Note:
Supply the brake liquid at the same time.Do not let it
below the lower limit.
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