2 Answers

take the back wheel off.. remove the back sprocket.. replace it with the new one.. remove the chain guard from the front sprocket with an allen key.. then remove the front sprocket while its in gear 2 stop it from twisting.. then replace it with the new one.. then put the chain on the front sprocket and bring it and put half way around the back sprocket... put the other end of the chain on the bottom half of the back sprocket making sure the 2 ends meet... then join the chain.. put the back wheel back on.. pull the tensioners till the chain is tight.. then put the front chain guard back on.. and drive off!! then after about an hour driving check the chain because it will stretch.. then tighten if u need 2.. but leaving about 1/4 of an inch slack on the chain.. let me know how it goes

take the back wheel off.. remove the back sprocket.. replace it with the new one.. remove the chain guard from the front sprocket with an allen key.. then remove the front sprocket while its in gear 2 stop it from twisting.. then replace it with the new one.. then put the chain on the front sprocket and bring it and put half way around the back sprocket... put the other end of the chain on the bottom half of the back sprocket making sure the 2 ends meet... then join the chain.. put the back wheel back on.. pull the tensioners till the chain is tight.. then put the front chain guard back on.. and drive off!! then after about an hour driving check the chain because it will stretch.. then tighten if u need 2.. but leaving about 1/4 of an inch slack on the chain.. let me know how it goes