um CBF 125, Руководство по обслуживанию

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CBF 125 AIR COOLING ENGINE SERVICE MANUAL
RENEGADE SPORT & SCRAMBLER X 125 EFI
1
10

Whether there is leakage of the fuel pipe or not.

Whether there is block/leakage or damage of the intake pipe.

Ageing on the high-voltage cable.

Whether the ground connection is strong enough.

All the connectors connected well.
Note: if any item above exists, please do the fix it first before start the analysis.
Diagnostic Help
：

Make sure there is no any engine issue record.

Have checked and follow the instructions shown above and no cause found.

Do not ignore the maintenance situation, cylinder pressure, mechanical timing and fuel quality.

Change the ECU and repeat the test, if the issue is gone, then the root cause is the ECU. Or
change the old one back to check the root cause.

Engine doesn’t start
STEP OPERATION SOLVED FOLLOWING STEP
1
Check whether the voltage of the battery is around 8-12V.
Yes Next
No Change the battery.
2 Crank the engine, and check whether the voltage is above 8V. Yes Next
No Change the battery.
3 Check whether the start motor working well or not. Yes Next
No
Change the start
motor.
4 If the issue only occurs in winter, check the oil and gear box
oil.
Yes Change the oil
No Next
5 Check whether the engine rotation resistance is too big or
not.
Yes Check the enigne
No Help