Precautions
Many important precautions must be understood when maintaining the electrical system. Learn and follow all of
the following rules.
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Do not reverse the positive and negative electrodes of storage battery, otherwise the diode of electrical
component will be burned out.
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Check the battery state before checking other parts of electrical system. To carry out the accurate electrical
system test, the battery must be fully charged.
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Electrical components shall not be beat with hammers or fell on a hard surface. This impact may damage the
electrical components.
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To prevent the electrical components from being damaged, do not disconnect the battery cable or any other
electrical connection when the ignition switch is on or the engine is running.
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The current is larger, so do not press the start button all the time when the starter motor does not rotate,
otherwise the current may burn out the starter motor coil.
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Be careful not to short-circuit the cable between positive electrode of storage battery and ground wire of
frame
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Sometimes a failure may involve a project, and sometimes it may involve all projects. Do not replace the
defective part when the exact fault cause is not found. If the fault is caused by other causes, the repairing or
replacement must be carried out immediately, otherwise the newly replaced part will be damaged again
easily.
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Make sure that all circuit connectors are clean and tight and check whether there are burning or wear signs on
the wires. The broken wires and poor contact will affect the electrical system operation.
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Measure the coil and winding resistance after the components are cooled (under indoor temperature)
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