Quote:
Originally Posted by J-Mech
If you pull the choke and it runs better, it's clogged up. If it is overfueling, then he may have gotten a hole too big. FWIW, I prefer the adjustable unit's also. But I also have lots of carbs sitting around, so all of mine are adjustable. May have been a regional thing too.... I don't know that I've ever had a Cub that didn't have an adjustable carb. Maybe I am just lucky. I've not ever needed to remove a welch plug on these little carbs. Not saying that isn't a good idea if you can't get it clean though.
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So, not trying to derail the thread from the OP, honest. We couldn't make mine run correctly even with the choke on. Really are leaning toward something modified/damaged during prior repairs.
So regarding adjustable carbs, does anyone know a source of used ones--as in what engine? My M18 in my 1811 had a fixed jet. I have a parts 682 with 2 blown engines--the first was a series 1 KT17, it had a fixed jet. The replacement series 2 had the adjustable that I robbed for the M18. I have no idea what carb is original to any of the engines, other than the one on the series 1--that engine blew at 200 hrs.