gasket kit. buy one and download the manual from the site in pdf form. i rebuilt mine with the help of my dad. but he mostly just said yes, no, and helped with stripped bolts. it was rather easy to be honest. like ive told other ppl. the most expensive part is the rings if you need new ones. i suggest do it. if you have the time and money, why not? get to know the bike a bit more and pour more of yourself into getting it running. that way you can help outer ppl on the forum with questions also. lol. any questions, feel free to pm me.