one more

Bigger easy out.
If I recall those are m8x1.25. Since you're already off center drill it out with a .250 or .265 drill and it should penetrate one wall causing the screw to collapse which will make it easier to extract. Then just retap it.


--Steve

It looks like there is some depth there,.. is there?...
Can you find a common blade screwdriver that's just tight in the hole?... then, tap it in tight with a mallet and try to unscrew... plenty of penetrant oil...
...

highlander10 wrote on 07/11/12 at 14:13:55:


Tools like taps and easy outs are VERY hard steel, but also brittle (they don't bend), so you have to work with them more gingerly than regular nuts and bolts.   Use plenty of oil or anti seize, and twist just a little at a time before backing the tool out to clear the filings.   In any case, I think these tools are much harder than the head itself, or even the bolt you're trying to remove.

I would get my little soldering torch ( $10.00 at Lowes), fill it with butane & remove the soldering tip & heat that thing up good, then, Id take my squirt bottle ( set to pump a stream) & squirt Ice Water in the hole youve drilled, then Id put a penetrating oil on it & let it sit.
I wouldnt stick an eze out  in it yet,.They have to spread the dutchman to bite it,,YOuve got stuff sticking up I think.. Id work at it with alternating heat & cold water & oil, then Id take a pin punch & stick down to the bottom & give it a few quick smacks with a lite hammer. Ill bet you can cut a groove across it ( IF ya do it so you make square shoulders) & back it out with vise grips on a screwdriver,,

Or maybe grind a bolt down to go in the hole & JB weld it,,If it goes deep enough & you get enough surface area covered, it otta bring it out,

Antisieze is your friend, use it going back together,


& FWIW, you could spend hours messin with it doin it my way,, or just a minute or so with an eze out, OR, the eze out could cause you great pain,, I have some, I even have some tungsten carbide ones, I guess theyre about the best Ive seen, & when they work out,, theyre the greatest! Ohhh, but when they dont,,

As mentioned in the referred to post, look into EDM, older machine shops should be able to provide the service.  Once an easy-out has broken off, you are trying to drill through hardend metal..difficult to do.

today i decided to pull the motor down and tomorrow i'll bring to a local workshop that is open to public for such works. there is a guy who gives courses about motor repairs and so on and promised to help.
Thanks n i'll let you know