Yamaha YBR125 Custom, Service Manual, Page: 51 / 218

3
INSP
ADJ
Re
place
ment of engine
lubricating-
oil/
check of lubricating
-oil pressure
Replacement of engine oil
Note:
Do not add any chemical additives.Engine oil also
lubricates the clutch and additives could cause clutch
slippage.Do not allow foreign material to enter the
crankcase.
1.
2.
3.
4.
5.
6.
Rest the machine on a level place.
Warm up the engine for several minutes,and stop it.
Place an oil container under the oil drain plug.
Remove:
Filling-in cock of engine oil.
Drain cock
Gasket(installed on drain cock)
Drain oil
Add the engine oil from filling-in cock.
Install
Filling-oil cock of engine oil
Gasket(installed on drain cock)
Drain plug
Torque of drain cock:
20N.m(2kgkm)
Check of oil pressure
1.
2.
3.
Remove:oil pressure inspection bolt
Start and run the engine for several minutes in
idle speed.
Check:
Machine oil condition of overflowing hole
Overflow of machine oil
→ oil pressure is normal
Machine oil can't overflow → oil pressure is insufficient
Note:
If the oil still does not over-flow after one minute,stop
the engine immediately to prevent it from being da-
maging.
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