The string will be easier to work with if you can actually see what you're doing. The new string should be able to run through the hole vertically. Push the end of the 6th string down through the corresponding hole on the neck. You can push a few inches of string through the hole to make it easier to grip. Although there is another method where the string goes through the hole twice, this method is harder and the first way works just as well. The capstan is the white plastic part that you wind the string around. You can pull the string back either above or below the capstan depending on your preference. You want to leave some slack so that you can tune the guitar without risk of breaking the new string. This would be a good time to double check that the knot you made in the bridge is secure. You can do this either once or twice depending on your preference. This should keep the string secure when you wind it up. Hold the loose string and tighten it up the same way you would to tune your guitar. Keep winding until the string is in tune. You can let go of the loose string after a while. Cut off any excess string with a wire cutter. If there is any string sticking out from the head of the guitar, be sure to use a wire cutter to safely remove it. Otherwise, you could accidentally hurt yourself on the string when you go to play your guitar. Working in order from the 6th string to the 1st string one at a time can help make it easier to properly attach the new strings to the neck of the guitar. Be careful not to tighten the strings so much that they snap, just like when you tune your guitar normally.  After you've attached all of your new strings use a tuner to help you get your guitar back in tune.  Alternatively, you can attach the new E string before you remove the old A string, and tune the guitar to itself. To do this, play the E string at the 5th fret and match it to the sound of the A string.

How would you rephrase that briefly using Indonesian?
Putar pasak tala untuk senar ke-6 sampai lubangnya mengarah ke atas. Masukan senar ke-6 baru melewati lubang sebanyak satu kali. Masukan senar ke celah yang ada di bawah penggulung. Tarik senar ke-6 dengan erat hingga ada sekitar 10 cm senar yang kendur di tengah leher gitar. Arahkan senar masuk kembali ke putaran di atas penggulung. Putar pasak tala dengan menggunakan jari atau alat pemutar untuk mengencangkan senar. Ulangi proses ini untuk setiap senar.