use some yamalube, mix at a 32:1 ratio, start the quad up and let it idle for about an hour, turn quad off. fill tank back up. start up again with the rear tires off the ground and let it idle in 1st for a while. then go out and ride it and never get into powerband. once gas runs out, refill and it is time to go f*ck off. oh when you refil the finally time, switch out gas with a better pre-mix and the ratio you run.