Zontes ZT125-M 2022, Maintenance Manual

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b. Unplug the high-voltage package plug from the engine
head.
c. Refer to the steps in "Remove the Throttle Valve Body
Assembly to Clean Carbon Deposits" and unplug the plugs of
the stepping mot or① and the three -in- one sensor② on the
throttle valve body.
d. Locate and unplug the plugs of the high-pressure fuel
pipe③ and the fuel injector④ at the front end of the
throttle valve.
Caution: A small amount of fuel will flow out when the
high-pressure oil pipe is pulled out, and it is forbidden to drip
onto the surface of the part.
e. Locate and unplug the crankshaft position sensor⑤ and
the oxygen sensor⑥ in the frame position on the right.
Caution: One end of the crankshaft position sensor is
connected to the inside of the engine, one end is connected
to the main cable; one end of the oxygen sensor is connected
to the engine in front of the muffler, and the other end is
connected to the main cable; do not unplug the wrong plug.
f. Locate and pull out the plug of the magneto stator
charging cable⑦ at the left frame.
Caution: One end of the magneto stator charging cable is
connected to the inside of the engine, and one end is
connected to the connector on the rectifier; do not pull out
the wrong plug.
g. Use an 8# sleeve to remove a bolt on the starter motor,
and take out the negative wire⑧ on the bolt.
Caution: The negative wire of the early production model
is fixed on the bolt around the starter motor.
h. Use an 8# sleeve to remove a bolt on the starter motor,
and take out the negative wire⑧ on the bolt.
Caution: The negative wire of the early production model
is fixed on the bolt around the starter motor.
i. Locate and unplug the plug of the cylinder head water
temperature sensor⑩ on the right side of the throttle valve
body.
Caution: The water temperature sensor of the cylinder
head is directly connected to the engine, do not pull out the
wrong way.