Thats right....without taking out the carb. A couple of others here told me it was possible. I sure didnt see how. But with a couple of small, modified tools, the job wasnt TOO bad. Removed the access cap from the bottom of the carb using a 17mm wrench. Used a short common (flat head) bit from a 6 in 1 screwdriver for the pilot jet, then turned with a 1/4" wrench. Used a deep socket, without the ratchet, on the main jet, then turned with a small set of pliers. Had a little help from a small mechanics mirror and a small LED pen light to help locate the jets when still in the carb. Also, when reinstalling the pilot jet I used a small piece of shrink wrap around the bit and jet, then very lightly heated around the jet. This helped hold it in place until I began to screw it in. Then I just pulled the bit with shrink wrap off the jet. No problem. Took about 30 minutes, but that was my first try. Still faster than removing the carb. I figure next time I should be able to do it in about 15 minutes. BTW..... Was running the GYTR AIS removal kit jets. 50 pilot and 175 main. Stock was 45 pilot and 162 main. New jets installed today were 48 pilot and 168 main. Ill let you know how they are, although Im fairly confident these will be sufficient to get the job done.