Broke off the tip of a screw in the little hole in the brass plug covering up the air/fuel mixture screw in my first little attempt to get to it.  Was wondering if I can just put some jb weld on the head of a screw and on the plug and stick 'em together and pull.  Bad idea?

so that little screw tip won't give me any trouble?  I was worried that with that in there giving my some extra length, trying not to go too deep would be impossible.  By the way, how deep is too deep?

Also, don't have a drill - but I'm sure I could get ahold of one - hence my initial interest in the JB Weld

Some have boogered this up and screwed it up so bad as to not be able to adjust the screw ever again.

So while I know I could do it, ask yourself, man w/o a drill can you handle it?

If you can, get yourself a drill, an 1/8" drill stop.

With that broken off screw tip in there it complicates the issue.  I'd drill that out 1st.  Harbor Freight sells a really crappy 1 use only set of mini carbide drills.  Go at it with the smallest you can handle and incrementally go up in size till that tip is removed.  You might want a dremel to do it.

OK? tip removed?  Chuck up an 1/8" drill, slip the 1/8" collar on and set the drill depth to 1/8".  lightly drill to the depth of the stop.  A little wd40 don't hurt.  If the drill grabs, it might even spin out the plug for you.

Any who, don't be in a hurry, take a sip o'beer once in a while.

That tip broke off cause not enough of the body engaged to take the torque you were using.

If just the "tip" of the pilot air adjusting screw has broken off and is still down inside the carb body and are trying to get it out ... DO NOT DRILL .  
Use air pressure, or water power jet, pressure washer; anything but a drill to get the tiny piece out.

If you drill there is always the chance that the carb will be damaged and if so then you can just chunk it into the trash can, because there is no repair for that kind of damage.

  Jb gets real strong I think it will work.

LANCER wrote on 08/12/08 at 05:06:35:


The way I read it I thought he had used a sheet metal screw in the plug in an attempt to pull it out and that was what broke.  As a tip, when I drilled mine I went very slowly and as each larger bit grabbed it actually twisted the plug out.  Go slow and only let the drill make a few turns on each size bit.

On the Savage/S40, it is easy. There is almost unobstructed access to the screw cover plug. On my Kawasaki 250 Ninja the carburetors have to be removed to even get access. Of course, if I had one of those handy little drills dentists use, I could have done it easily.