Zontes ZT125-M 2022, Руководство по обслуживанию

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f. Use a short Phillips screwdriver to remove the 2
GB9074.4 M4×12 bolts③ and the anti - off card④ that come
with the throttle valve body assembly, and then remove the
stepping motor.
g. Use throttle cleaner to clean the carbon deposits on the
head of the stepper motor. Spray a small amount of cleaning
agent into the valve body hole. It is forbidden to soak the
stepper motor with any liquid.
o. Install the stepper motor back to the valve body, paying
attention not to miss the sealing ring. Plug the plug back in.
3. Remove the throttle valve body assembly to
clean up carbon deposits
a. Refer to the previous steps to loosen the bolts that
come with the clamp, then rotate the throttle valve body
assembly so that the stepping motor plug faces upwards.
Unplug the stepping motor and throttle position sensor
plugs.
b. After unplugging the desorption pipe at the bottom, pull
out the air filter outlet pipe and then remove the throttle
valve body assembly.
c. After cleaning the carbon deposits, put it back.
4. Disassemble the sensor
a. If the idling speed is abnormal, it is easy to extinguish
and the spark plug and high voltage coil are eliminated, the
ensor needs to be removed for investigation. It should not be
disassembled under normal circumstances.
b. Refer to the steps for removing carbon deposits without
disassembling the throttle valve body, and unplug the plugs
of the stepping motor① and the sensor②.
c. Use a short Phillips screwdriver to remove the 2 bolts③
that comes with the throttle valve body assembly, and then
remove the three-in- one sensor④.It is forbidden to soak the
sensor with any liquid.
Simple test method:
After turning off the power, take out the stepping motor,
do not loosen the cable plug, press the flameout switch at
startup without ignition, check whether the motor plug can
shrink back and forth, and finally turn off the flameout switch
to check whether the plug returns to its original position.
To check whether the stepper motor is abnormal, measure
whether the resistance at both ends of A and B is 53±5.3Ω.
d. Use a short Phillips screwdriver to remove the GB9074.4
M4×16 bolts ⑤ that come with the throttle valve body
assembly, and remove the position sensor. Be careful to align
the hinges ⑥ when you put them back together.