Zoomlion ZT20J, Service And Maintenance Manual

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wiring must be checked regularly. The following steps should be taken when checking the electrical
system:
a) Check and clean the battery terminal connections to ensure a secure connection.
b) Inspect the battery case for cracks or damage.
c) Check the positive and negative battery cables for corrosion, abrasion or scratches. Check the
connection on the chassis to confirm that the connection is secure.
d) Inspect the wiring harness of the entire engine to confirm the presence of worn, severed or
damaged connections and repair if necessary.
e) Check all harness connectors to ensure they are fully seated and locked.
f) Check the ignition coil and spark plug cable for hardening, cracking, wear, separation, cracking of
the dust cover, and proper meshing.
g) Replace the spark plug at the time intervals specified in the engine manufacturer’s manual.
h) Check and confirm that all electrical components are securely connected.
i) Check the ground and platform control consoles to verify that all warning indicators are working
properly.