With the engine at a slow idle, you can screw with that bottom adjustment all day long and you will NOT notice any difference unless you screw it ALL the way in, which will stop the flow of fuel completely. The engine must be running wide open, under a load, before that bottom screw will make any difference. My advice is to screw it all the way in until it seats, and then turn it 3 full turns out (factory initial setting) and leave it there. The low speed idle adjustment, the one up on top, SHOULD make a big difference with the engine at a SLOW idle. The initial setting for that screw is 1 1/2 turns out.
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Today's Featured Article - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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