Jetting is pretty simple shut off the fuel first then locate the 17mm plug on the bottom of the carb unscrw that. you will leak fuel so put a rag under it on the crankcase. grab a 7mm socket and 1/4 drive ratchet if you take your finger and feel in the plug hole you will feel the main jet. now carefully remove the jet sometimes the jet holder will unscrew with it no worries it will go back. your stock jet should be a 148 I would bump up to a 152 or 155 turn the air screw out about 1/4 to 1/2 turn too it's right on the bottom of the carb towards the front of the engine beside the bowl in a recess. when you install the jet screw it in with the socket only then barely and I mean barely snug it or you WILL break the jet holder. now put the plug back in the bowl turn on the fuel give it about 30 sec to fill the bowl, start it and enjoy.You will need to take a plug reading to determine if you are rich or lean still. run the quad around easy letting it get up to operating temp, usually about 10 min or so. then find you a nice ling straight and open it up when you get to 5th wideopen hit the kill switch then pull in the clutch and stop, pull the plug and check the color, you are looking for a nice med brown (like Cardboard), if it's too dark pull the air box lid and put in a new plug and do the test again. if it's too light go up one jet size on the main and retest. Good luck Keep us updated.