1). Step 1:- Use the rasp tool into the hole to roughen and clean the inside of the hole.
2). Step 2:- Coat the needle tool with rubber cement, and insert the string halfway into the eye of the needle.
3). Step 3:- Insert the needle with the repairstring centered into the hole.
4). Step 4:– String is pushed in approximately two third of the way.
5). Step 5:- Cut off excess string. Keep the excess about 5mm.
Attention:- Should be certain that the No.2 exclusive tool follows the direction of the slit, or else the tire will leak.