We need to find a brand of second-hand used mountain bike inner tube (because this brand of inner tube has good elasticity), cut it about ten centimeters, and the smallest inner tube should be 1.95. First, put one end of a truncated bicycle inner tube on the frame and put it in the position of the lower bowl group.
Then we turn up the lower opening of this small tire, and be careful not to fall off. It's like this after it's built. Then we clean up the front bowl set and oil it again, then put the front fork of the bicycle back, and remember the installation order of the parts.
After this installation, we will install the gasket of the front bowl set and the bicycle handlebar, and pay attention to the installation sequence of the bicycle handlebar set parts. Install all the parts of the bicycle handlebar cover, then adjust and tighten the handlebar, and the bicycle handlebar is finished. Next, we're going to turn down the inner tube of the little bicycle that has just been turned up, and it's over.
Note: Normal riding does not require any skills, but it is the most important and basic item in bicycle maintenance. Before riding a bicycle, it is very important to check the condition of the bicycle, which is often forgotten. Therefore, before riding, remember to do the following checks:
Check the size of riding posture: if you are not riding your own car, remember to adjust the seat cushion to the appropriate height before riding.
Check the tightness of screws in each part: check whether the front and rear wheels are quick-released and the seat cushion lever is locked, check whether the handlebar is fixed and whether other screws are loose.
Check the tire: Check whether the tire pressure is sufficient. If not, pump it up to a suitable pressure, check whether there are cracks in the tire wall, whether the cut tire tread is too shallow, and replace the outer tire if necessary.
Check the brakes: try to pull the front and rear brakes and check whether the brakes can stop.
Check the front wrist: step on the front brake and shake your body back and forth. If there is a shaking gap, it means that the front wrist needs to be readjusted.
Check the transmission: after starting, try to change the front transmission and the rear transmission respectively, whether it can smoothly change to various speeds and whether there will be abnormal noise.