Leaderboard

Every part of a carb is designed and tuned to work with all the other bits as a whole, and for a specific bike, and they get tuned differently for climate, altitude, fuel type, and, the sort of power band the engine it's made to fit. They will happily sell us a carb that's the same, and runs ok, but that's really made to be on some twin cam, high compression, high revving road bike with a wide flat power-band, and although we can coax them through the flat spots or overcome the over rich at low revs that the slow old quad does, it's never really satisfactory, I do as you did if the idle mixture screw can't be got out, or the body is really worn, and get some after market to use as a base to swap all the old brass and rubber bit's into. And that doesn't always work I might warn people.. sometimes the air jets can't be removed from the air-cleaner side even though they appear to be exact copies, and the threads are sometimes different.. the jet threads as well as the idle mixture screw threads. You were lucky Params.. Glad it worked for you.