i say first time min 3hours dont rush ihave never taken the motor out of my warrior to rebuild it although that would be way easier just make sure u read the manual line all your marks up and dont forget to ajust the rocker arms once u get it top dead center not saying i didnt do this my first time....i have done mine a few times now and ya i probaly could do it in a half hour 45 mins

 

so wait what do i change when i do a motor rebuild? My motor has like some bore mods and stuff I bought it froma guy i dont know exactley what mods i have but will rebuilding it make the mods go away?? what do i replace when im rebuilding it?? Like the cams or something? Sorry im still a nooobbbb

 

You can't say for sure what it needs until you take it apart and look at it, but usually you need to bore/hone the cylinder, and a new piston and rings to match the bore. The best thing to do if you don't know what to do is get a rebuild kit like I said before, it gives you everything you need.