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Message started by Jimworx on 11/26/07 at 13:56:43

Title: Stuck, seized air mixture screw
Post by Jimworx on 11/26/07 at 13:56:43

I recently took a look at the air mixture screw and I realized that the haedis mangled and it's stuck in there. The previous owner really jacked that part. Does anyone have any idea on how to remove the screw?

Jim

Title: Re: Stuck, seized air mixture screw
Post by azjay on 11/27/07 at 04:43:54

i had to CAREFULLY drill it, and use an easy out, to fix mine when i jacked it up :-[

Title: Re: Stuck, seized air mixture screw
Post by Max_Morley on 11/27/07 at 08:54:19

They make twist drills that work CCW and when they dig in they will many time screw the broken fastener out. If you have a good grinder and can visualize it, any old bit of the correct size can be sharpened backwards and work. It is better than the CW ones as it un-jams the stuck parts rather than jamming it tighter. Max

Title: Re: Stuck, seized air mixture screw
Post by Savage_Greg on 11/27/07 at 13:53:27

Max_Morley wrote:

Now, that's handyman stuff, there!

;D

Title: Re: Stuck, seized air mixture screw
Post by Savage_Greg on 11/28/07 at 06:51:45

If it is really stuck, I'd be tempted to take my Dremel tool to the carb body and cut that recess down to where I could reach the screw head from the side too. That metal is just there for the brass plug anyway.

Most carbs don't have the mixture screw recessed like that anyway. Just a thought...

Title: Re: Stuck, seized air mixture screw
Post by Digger on 07/10/08 at 20:17:09

022E371002203D232A364F0 wrote:

I've got a set of these, but never had to use them yet:

Left-Hand Drill Bits (http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=95146)

Title: Re: Stuck, seized air mixture screw
Post by justin_o_guy2 on 07/10/08 at 23:24:32

Left hand bits are no big deal, I heard they were ALL like that in Australia & they only use right hand bits when the mess something up.... ::)

Really, no kiddin..

Title: Re: Stuck, seized air mixture screw
Post by drums1 on 07/11/08 at 04:49:02

I have the same problem--screw is seized, head is buggered up. And mine is only 1 1/2 turns out--running real lean, sputtering, popping, backfiring. I had lined up to buy a carb from someone on the forum here, but I never heard back from him. It's still rideable, but embarassing every time I let off throttle.

Title: Re: Stuck, seized air mixture screw
Post by T Mack 1 on 07/11/08 at 07:48:17

Before drilling anything out try this.

1) Spray some WD-40 or Liquid Wrench (or like product) in the opening.
2) take a screwdriver and lightly tap the screw.
3) Let it sit a bit.
4) Spray again and tap again.
5) Then try to turn it in (clockwise) first maybe just a few degrees.
6) If it goes in a tiny tiny bit. ... Spray again and try to unscrew ONLY a tiny bit. repeat and repeat each time turning a few more degrees.

If it didn't turn in any, then drill.

Remember, it is very easy to "oops" when drilling. It should be the last resort.