YESOUL C1H Manual De Producto página 16

How to Adjust Bike
3. Horizontal adjustment of saddle:
Loosen the knob under the saddle, slide the saddle back and forth to the desired position, and tighten
the knob as much as possible.
4. Body level adjustment:
There are four adjustment pads at the bottom of the front and rear pedal tubes. Screw these pads
until the body does not shake.
Horizontal adjustment of saddle
Loose
Tight
High Low