First thing you want to do is shut off the gas, remove the throttle cable, and choke cable, then remove the carb. Get a small phillips head screwdriver, and tap the screwdriver on the 4 little screws at the bottom of the carb. I take an adjustable wrench to turn it, and I can keep pressure on it all at the same time. Then, remove the pilot and main jets, and install the new ones. And out everything back together until you are happy with the jet sizes you chose.