I have not been able to find any information in any Weber IDF rebuild article that goes into this area.......Has anyone done this that could help me out with a little information or maybe a link to a rebuild article that covers this with some detail? When I removed the spindle and the bearings I noticed a difference in the parts between the two carbs, namely the flat brass pieces that go on either side of the bearings......Thanks in advance for any help.....Jerry

The diagram at the end of this link may help you -
http://www.rescue912.com/spider/WeberIDF_Setup/

Hey, Thanks but that exploded view doesn't show the pieces I am trying to figure out....Jerry

I tried replacing throttle shaft bushings on a single throat carb (not an IDF) and learned one thing from that experience: it's not a job for most home mechanics. My test run was on a garbage carb, and I don't think I made anything any better after futzing with it for a couple hours.

I've destroyed a few myself over the years, it was always hit or miss. The dismantling was hard, reassembly a lot more difficult and critical. Last two times I sent Dellortos with frozen shafts to Art Thraen in Utah. Beautiful work, about $70-75 each if I remember right, and I think they came back actually better than new. Aircooled Engineering Recommended.

For a good book try the CB Performance Weber book (http://www.cbperformance.com/catalog.asp?ProductID=4) which has exploded diagrams and most any other info you'd want. At $12.95 it's a steal. Or their parts at http://www.cbperformance.com/category.asp?categoryid=6 I think Redline has diagrams online too (http://www.redlineweber.com/html/Tech/Table_of_contents.htm), as does Pierce Manifolds (http://www.piercemanifolds.com/) Love those Pierce guys, they're really great.

I messed with a pair of carb throttle shafts and had the same results. In my case they were triples, but the experience applies equally to IDFs. I won't do it again. And I've heard nothing but good things about Art Thraen myself. If I were working on IDFs that's where they would go.

Thanks one and all for your input......actually the disassembly and reassembly is not the problem (I will admit removing the accelerator pump cam roll pin took some finesse) but I have found a difference in the number of spacers on each side of the bearings in one carburetor when compared to the other one. I have looked at several exploded views but none seem to show much detail in that area...maybe the good Art Thraen could help me with a little "tech support"......Again Thanks. Jerry