Impact primary clutch bolt out??

[Dadsbaby]

I had planned on using my impact on the primary clutch bolt but it looks like the frame is in the way, so how do you guys get to it? My puller is on the way from Plowmans, done got the secondary sheave kit from them, not installed yet and clutch is going to be sent to them to be redone as soon as I get it off. Pulled the carb to make sure jets were clean..the two inside were clean but there's one on the outside on top of the carb that appears to be clogged..can't see daylight thru it or able to get bread tie thru it either. I'm not sure what that jet is for, I've done plenty of carb work but never seen one on the outside like this. Does the hole go all the way thru? The way it's made looks like it should.