Uh oh, not again...

[Crazcnuk]

Took the carbs apart, two of the idle mixture screws were siezed. Managed to get one out, then broke the easy-out in the 2nd one.

Pretty much going to need to find a 3u9 series carb body to get it fixed.

[GARTHXS]

carbs

Mine are totally frozen and guess ill get some replacements, nice pics though!

[DGXSER]

Crazcnuk,

Look for my thread(s) on the exact same issue. Same carbs to, late model with screw in the tower. I had a machine shop mill the screw/extractor down to just the minor diameter of the threads on one side. Then I pulled the enricher out soas not to mess up the seal. Then I hit it with blaster several times, and cooked it with heat till the blaster smoked and boiled. Repeated this many times, then while it was warm, I used a small stainless steel nail to get between the left over screw and the carb tower wall above the threads and levered it. I was fortunate that it peeled out in one piece. Then I used a couple of my other old mixture screws as a tap to run the threads. I bought all new carb kits which inlcuded new screws.

[Crazcnuk]

I've had to drill out 3, so far. The first two came out, but the 3rd one broke the easy-out, and it's now stuck in there.

I have no idea how to get the broken piece of the extractor out.

[tarzan]

Crazcnuk,
I had to use a carbide endmill on a broken extractor that was in one of those.You would be hard pressed to do it free hand without wandering off in to the aluminum probably.A machine shop should be able to put in a vise on a mill and carefully cut it out.

[Ken Talbot]

If you can't find a machine shop that will do it, you can grind out the broken e-z-out with a diamond burr in a Dremel tool. It's not fast but it does work.

DAMHIKIJD

[DGXSER]

Crazcnuk,

That is exactly what I had. Stuck mixture screw, tried an extractor, broke off in it.

See these threads:

http://www.xs11.com/forum/showthread.php?t=20669

http://www.xs11.com/forum/showthread.php?t=20575

[Crazcnuk]

Ok, I got the last screw out, but I don't think there is much left of the threads!

Anyone ever find a tap size that will clean it up?

[planedick]

Carb repairs

I have a miniature machine shop here and have had good success getting carbs apart and removing broken screws etc. If you can send those old carbs that are stuck and such to me before you totally destroy them, I can probably get them removed and/or apart and cleaned for you. Very reasonable pricing according to level of difficulty. PM me if you're interested.

[Crazcnuk]

GOod to know, but maight be too late for these ones.

I have 2 where I got the screws out, but did a bit of a job on the threads.

I think they would work ok, if I could get a tap to chase the threads, but right now I can't get the new screws to go in without wrecking the threads on them.

You could still sell me thos ecarb bodies you have laying around there...

[planedick]

Tap or....

I'm pretty sure you can get the tap at McMaster.com, you just have to know the size and pitch.

I thought I had offered that set to you. I'll go back and check my PM's again.

[Crazcnuk]

I managed to clean the threads out, very slowly and carefully, with an old idle screw.

The one, I think, will be fine, but the one where the PO had cut down the tower, won't have as much adjustment, so I will likely still need a carb body.

[DGXSER]

Hey CrazCnuk,

I found that mine never go above 3 turns from bottomed out, and it is ten turns to bottom form the top on mine, so you may have all the adjustment you need with that you have. JAT

[cokeman]

Craz: I have a very clean set off an 81 std. They have no mixture screws because I had to drill one out, the other 3 are fine but the O rings are no good, no damage to the carb at all. There are no broken posts or any thing like that. In case you may be interested. I got them on a parts bike I piicked up last year. All they really need are mix screws and float pins.

Darrell

[Crazcnuk]

I have all the internals, as long as I get a set of bodies that are the same as the carbs I have. This is why I was looking at PD's set.

I have several sets of jets, pilots, needles, etc, for the 80 style of carb.
If the 81 style is the same, then yours would work fine.

I am going to have to order at least one idle screw, and will have to get the o-rings and such at the same time.