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Keith True · 05-21-2019, 09:04 PM

It's been a while since I had a B carb apart.But,I think the throttle shaft can't really be soldered up and filed like the A.I think it has a step,or cut out in it,and a passage in the body that lines up with it.When it is in a certain position it allows fuel to run through it from the passageway that lines up with it.You can't just bush it,because you can't plug up that passage.I can't remember if that passage is for idle,or off idle enrichening.

05-21-2019, 09:04 PM	#18
Keith True Senior Member Join Date: May 2010 Location: Epping N.H. Posts: 2,990	Re: Need Help with Model B Carb It's been a while since I had a B carb apart.But,I think the throttle shaft can't really be soldered up and filed like the A.I think it has a step,or cut out in it,and a passage in the body that lines up with it.When it is in a certain position it allows fuel to run through it from the passageway that lines up with it.You can't just bush it,because you can't plug up that passage.I can't remember if that passage is for idle,or off idle enrichening.