1.
Identify which of your strings go there. The tones of the violin strings are (from lowest to highest) E, A, D and G and are stretched on the violin in that order from left to right. Purchased strings will have these tonnage names marked on their separate packages, but you can also specify which string goes from thickest (lowest) to thinnest (highest).
2.
Remove the old ‘E’ string. This is the leftmost, thickest string on the violin. Disconnect the stick attached to the top of the neck by turning the stick towards the bottom of the instrument until the string is unwound and you can pull it free from the chin in the stick. Pull the entire string out through the hole in the tail section.
3.
Replace the lowest string before removing any others. It will keep the bridge from falling out. Thread the colored end of the string through the bottom of the hole piece hole and up to the empty pin. Insert the end of the string.
4.
Remove and replace each of the following strings. This should be done in sequence in the same way as the lowest string.
Tune the strings. Match each string to the appropriate pitch by adjusting the tension of the buckles until the string sounds at the correct pitch. Check with your ear, tuning fork or tuned instrument or electronic tuner.
Although a violin can last for centuries if it is well maintained, all violin strings must be replaced regularly due to normal wear and tear. The process of changing strings on a violin is not difficult, but it is important to make sure that your placement of the strings is correct and that their positioning is correct. It will not only make the process easier, it will ensure that your violin is ready to play when you are done.
Source:danspela.com