Carb Rebuild issue....Stuck throttle valves

[OcciferSeal704]

So this is my first post. Ive used this sight for about a month now to help me with my 82' Aspencade rebuild. I finally decided it was time to create an account and now need some advice on an issue.

I am currently in middle of a carb rebuild. Carbs were in horrible shape. Bike was garaged, but hasnt ran in 10+ years. Throttle was locked (not the cable) so i knew the carbs were going to be rough. Purchased the Randakks kit and book. Got them out fine, disassembled fine (except for the idle mixture screw on #3, which broke off at the head). I ran them through the ultrasonic cleaner with some degreaser, used some carb cleaner, and they all cleaned up excellent. However, the throttle valves/shafts (?? i believe im using the correct terms) do not open and shut with ease. In fact, most of them are barely able to be turned open and shut. This obviously is a problem. Now ive heard that you dont want to open up the butterfly shafts due to some felt rings and being a Pain in the butt to replace. SOOO my question is, whats the trick to getting those throttle shafts loosey goosey again?

Another issue i have, which ill go ahead and throw out there, when cleaning and using compressor to air dry parts, it looks like i blew out the square brass piece that fits into the top of the check valve in the accelerator pump cover plate and could not recover it. Im assuming this will cause an issue and i need to order a new accelerator pump plate?

[DaveO430]

I have when all else failed removed the throttle plate and pulled the shaft out. The difficulty is getting the throttle plate positioned exactly right when you put it back in, not really that hard but you have to get it right. Shine a light from the back side and adjust it until you can't see light around the edges. Red loctite on the screws, you don't want them coming out.
You are correct, the accelerator pump won't work without that check valve.

[RBGERSON]

I have been able to get throttle shafts moving by squirting a solvent(carb cleaner,brake cleaner, acetone, etc. ). directly at the shafts and then just keep working them by hand..may take several applications but they will loosen up.

Yes they are a PITA to remove and re-install.

[OcciferSeal704]

So a little PB blaster and working the throttle shafts for an hour or so finally got them freed up. I noticed there was a certain spot in the throttle valve’s rotation that seemed to open up a ever-so-small area of the shaft and kept getting some PB into it, followed with some carb cleaner. Seemed to do the trick. Will probably repeat another 2 times or so just to make sure.


And bit the bullet and ordered a new accelerator pump cover plate....I hate small parts

[DenverWinger]

I hate small parts

Ya know, if ACE Hardware offered a small package of assorted sizes and types of "Jeezus" clips, I bet it would sell......