ALSO SEE THIS ARTICLE IN THE TECH SECTION WITH IMBEDDED PICS!! http://www.thumpertalk.com/forum/showthread.php?t=309069 I wish i would have had something like this when i first started re-jetting my bike. turn the tank petcock off, disconnect the fuel line, and remove the tank. http://www.planetblade.com/arins/bike/jetting/1.jpg Use a suitable cover for the gas inlet, and make sure there is no loose dirt/dust around/on the carb that could fall in. I use a spray bottle of water, and compressed air to dry it. http://www.planetblade.com/arins/bike/jetting/2.jpg http://www.planetblade.com/arins/bike/jetting/3.jpg Generously loosen the rear air boot with a phillips screwdriver, and the front boot clamp that attaches to the motor with the appropriate allen(no need to loosen both front clamps).. http://www.planetblade.com/arins/bike/jetting/4.jpg http://www.planetblade.com/arins/bike/jetting/5.jpg Pull the carb rearward, disengaging the front boot, then to the left side of the bike and forward, disengaging the rear boot. Your carb should now sit comfortably to the left side of the bike http://www.planetblade.com/arins/bike/jetting/6.jpg http://www.planetblade.com/arins/bike/jetting/7.jpg http://www.planetblade.com/arins/bike/jetting/8.jpg and from the bottom, we can see the entire float bowl http://www.planetblade.com/arins/bike/jetting/9.jpg Remove the fuel screw (if you dont have an adjustable fuel screw such as MSR/ZipTy etc, stop now, and go to your shop and get one). Before removing the fuel screw, i like to turn it IN all the way, bottoming it out, so i know how many turns it had been at. Remember to keep the spring/washer/oring in the right order, and dont lose them. if they dont come out with the fuel screw, go fishing for them. http://www.planetblade.com/arins/bike/jetting/10.jpg Now drain the float bowl into a suitable container, by loosening the drain stopper. http://www.planetblade.com/arins/bike/jetting/12.jpg Now remove the screws at the four corners of the float bowl http://www.planetblade.com/arins/bike/jetting/11.jpg A magnetic pair of gloves helps keep track of screws. http://www.planetblade.com/arins/bike/jetting/13.jpg With the float bowl removed, we can see inside. Here pointed out is the leak jet...if we are changing the leak jet, remove it with an appropriate size flat blade screw driver, and replace. remember, smaller # leak jet, means larger volume and duration of AP squirt! http://www.planetblade.com/arins/bike/jetting/14.jpg http://www.planetblade.com/arins/bike/jetting/15.jpg Here, looking straight UP into the carb, we can see the main jet (middle) and the pilot jet (left of picture). The main comes out with an appropriate sized socket, and the pilot slides right out after being loosened with a flat bladed driver. http://www.planetblade.com/arins/bike/jetting/16.jpg http://www.planetblade.com/arins/bike/jetting/17.jpg After we are done with the pilot, main and leak...we can replace the float bowl. http://www.planetblade.com/arins/bike/jetting/18.jpg Now we rotate the carb so the top plate is visible. And remove the two allen head screws that hold the top plate. http://www.planetblade.com/arins/bike/jetting/20.jpg With the top plate off, we can see the top of the slide, the red tip of the needle, and the needle retaining nut. We remove the nut. http://www.planetblade.com/arins/bike/jetting/21.jpg http://www.planetblade.com/arins/bike/jetting/22.jpg http://www.planetblade.com/arins/bike/jetting/23.jpg you can now reach the needle with needle nose pliers (you may need to raise slide by rolling throttle). http://www.planetblade.com/arins/bike/jetting/24.jpg http://www.planetblade.com/arins/bike/jetting/25.jpg Now you can change your needle clip position. down for richer, up for leaner. If you are riding a 2005+, your needle is non adjustable. it is worth it to get a stock WR 2004 needle, or a JD needle kit. After you are done with the needle clip, drop it back into the slide, and replace the retaining nut. Replace the top cap, refit the carb boots, replace the tank and gas line, and you are done. WHile i was making this tutorial, HORRIBLE HORRIBLE disaster struck.. Please follow to THIS THREAD for the rest of the saga.