Serial number Common problems
The tyres are
leaking.
Brake noise
Wheel unstable,
wobbly
No power when
pedalling
Problem with
the display
Display blurred by
moisture
1
2
3
4
5
6
Solution
1. We recommend deflating the tyre first and then
inflating it with professional equipment
2. If still leaking, the inner tube needs to be replaced. We
can supply the spare parts and let the customer replace
it according to our video.
Firstly, we should find out where the noise is coming
from.
1. The noise comes from the tyre brake area -> Let's
send the customer a video to adjust the brake noise.
2. There is a noise when the handbrake is applied -> let
the customer apply the brake several times.
3. The disc of the disc brake rubs against the rim. ->
Let's check whether the disc is bent.
Tighten the screws that fix the disc brakes. If this does
not work, refit the tyres. If it still doesn't work, change
the wheel. We can provide spare parts.
If there is moisture inside the display, first place the bike
in the sun for a while. If it still does not work, you will
need to replace the display. We can provide spare parts.
1. Check if the display parameter value is the default
value.
2. If the display parameter value is normal, turn on the
display and long press the "-" button to check if the
3.75mph boost is working. If it is working, replace the
boost sensor. If it is not working, you also need to check
if the display shows the speed value by idling the pedal.
If the speed value is displayed, you need to replace the
controller. If the speed value is not displayed, you need
to replace the display.
Note: Display failure requires more detailed judgment to
confirm. We recommend that you contact the seller to
solve this problem.
Problem with the display
1. The display does not show any speed/mileage -> plug
the motor connector back in. If it still does not work,
replace the motor.
2. The display switches off while driving, then switches
on again and stays on and cannot be switched off. ->
Replace the display.
3. The battery shows full charge, but the display shows
empty charge and flashes constantly. -> Check the
parameters. If it still does not work, change the display.
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