Using different bicycle speeds helps maintain a certain rhythm of leg movement while riding, which avoids increased stress on the body. The speed switches, which are located on the steering wheel, need to be adjusted periodically. This problem is especially true if the bike is equipped with position switches.
Instructions
Step 1
Install the derailleur so that it is parallel to the star system. The distance between the largest sprocket and the derailleur bar should be between 1 and 3 millimeters, inclusive. Shift the left shifter to first gear and place the chain on the smallest sprocket. Make sure the cable that moves the front derailleur is taut.
Step 2
Raise your bike. Slowly pedaling, shift the shifter to second speed. Make sure the chain goes over to the middle sprocket when doing this. If the chain is still in the same position, tighten the screw on the shifter to tighten the cable on the front derailleur.
Step 3
Try shifting the shifter back to first speed. If the chain does not move to the small sprocket, re-adjust the cable. Ultimately, you need to tighten the cable so that the derailleur moves freely both up and down. Crank the pedals slowly and check that all bike speeds are operating when shifting the shifter forward and backward.
Step 4
Adjust the rear derailleur. With the chain on the rear wheel on the small sprocket, shift the shifter to the maximum position. In this case, the line of the derailleur rollers should be parallel to the smallest star when viewed from the back. Turn the stop bolt marked "H" one turn. if necessary, gently bend the derailleur so that the rollers are parallel to the small sprocket.
Step 5
Shift the shifter sequentially from a higher gear to a lower one to check for proper chain shifting. If the chain jumps over one gear or remains stationary, adjust the cable tension. Repeat these steps checking each star.
