TAYO Zontes ZT125-M 2022, Maintenance Manual

Page: 107 / 188

107 / 188
If you need to replace the fuel injector, wait until the
engine and muffler have cooled down. After placing the oil
container at the bottom, refer to the steps for removing
the high-pressure oil pipe to pull out the high-pressure oil
pipe at the end of the fuel pump to discharge the remaining
fuel. Use a 10# sleeve to remove the bolt ⑴ , remove the
injector holder ⑵ , and then take off the injector ⑶ .
7. Ignition coils
There is no high-voltage spark; the high-voltage spark is
weak; when the engine is started without dust, check
whether the ignition coil is normal. Common faults of
general ignition coils such as short circuit, open circuit or
grounding of the coil will cause no high voltage. In addition,
the material of the ignition coil insulation layer is aging, the
insulation performance is deteriorated, and the leakage of
the ignition coil makes the electric spark weak and the
ignition energy is insufficient. As a result, it causes unstable
idling, intermittent flameout and inability to catch fire.
When encountering this kind of failure, it is necessary to
check whether the resistance and insulation performance
of the ignition coil meet the requirements, if not, replace it.
Remove the spark plug from the engine and install it on
the high-pressure cap according to the steps in the section
"Maintenance-Spark plug-Removing the spark plug". Put
away the side brackets, use the main bracket to park the
vehicle firmly and unlock the vehicle, turn the flameout
switch to "", hold the brake handle, and place the spark
plug close to the engine cylinder head cover or box (should
be far away from the spark plug mounting screw hole)
about 6mm (0.24 in), press the start button. If a blue spark
is found on the spark plug electrode, the ignition system is
normal, otherwise it should be inspected by a qualified
maintenance unit.
If you replace the ignition coil, follow the steps below:
a. Put down the lef rear pedal and use the 4# inner
hexagon to remove the M6
×
14 bolt.
b. Pull out in sequence in the direction of the arrow
(from the rear wheel to the front wheel). Note that there
are 5 staples at the red circle and a circle of buckles around.
Need to use a lot of force to pull out.
c. Use 4# inner hexagon to remove 2 M6
×
14 bolts.
Starting from the bottom where the left cover plate of the
fuel tank and the tail skirt intersect, pull the left cover plate
outward with one hand and press the front part of the tail
skirt with the other hand; pull out the upper part of the left
cover plate after pulling out the bottom. Then grasp the
middle of the cover, press down the back of the cover and
pull out the left cover at the same time.
d. Refer to the section "Maintenance-Removal of Spark
Plug" to remove the left pedal. Steps are not repeated
here.
e. Unplug the ignition coil connector, pull out the high-
pressure cap at the spark plug and use a Phillips
screwdriver to remove the two M5×16 bolts ⑹ , cut the
cable tie ⑺ and then remove the ignition coil.