Mash Side 400 Mode D'emploi page 50

Electronic control unit( ECU)
Maintenance of Engine management system
Because of the EFI, there are many possibilities for the engine issues. In other word,
one issue may be caused by the mechanical problem or the EFI components. And the
diagnostic tools cannot 100% indicate the root cause. So this manual shows the way to
dig out the root cause with the help of the diagnostic tools.
Maintenance matters needing attention
1) Do not disassemble the components arbitrarily. It may damage the components if
the warter or the oil seep into the parts.
Oxygen sensor
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