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Its possible but difficult. You will need to drill a small hole down the middle of the snapped off bolt and use a correct size "easyout" which is a special reverse threaded stud which goes into the hole and unscrews the snapped off bolt.
several possible problems
1 if the stud holes were not cleaned out with a thread tap and compressed air then you will be bottoming out the studs at the head tension settings but not compressing the head onto the head gasket correctly
2 head is warped/ cracked and needs shaving and crack detecting
3 cracked cylinder wall/s
4 blocked radiator fins and cores
It is difficult or impossible to extract broken studs that have been broken because they are corroded in place or because they have been over-tightened and thread stretching might have taken place before the stud snapped, effectively locking them into place.
The removal tool for such small diameter studs cannot deliver the force needed to overcome such resistance and the use of such tools has the tendency to expand the stud and making the problem worse.
I suggest giving the stud a poke or two with a thin pointed tool and if it moves, proving it is loose but inaccessible, it is worth giving extraction a try, otherwise forget about stud extraction and opt for stud removal by drilling to cut out wasted time and frustration.
Drill a guided pilot hole. It is useful to have an assistant who can move around and watch the drilling operation from various viewpoints as it progresses; to give advice about keeping in line.
If you produce a good pilot hole that is well centred and in-line it will be easy to drill the tapping size for the helicoil. The helicoil is a good solution but not the only solution available. An oversize stud if there is room for modifications to the exhaust flange or a double-diameter stud can be made or alternatively the hole can be plugged with a large threaded plug, ground flush and then drilled and tapped to original size.
Go to: www.Searspartsdirect.com and enter the complete model number minus the decimal point. This will take you to a series of replacement part drawings. Check the drawing for the stud and see if it has a square head which would imply that it is replaceable from behind the bar bracket. Hope this helps!
hi buddy maybe a blown fuse on the head light or blown bulb also the only thing i can think off is you taking the studs out by putting 2 nuts on the thread and tighten them together then on the bottom nut turn it anti clockwise and the hole stud will come out then pop to your local hardeware store and get some studded bar and then cut to the length required thats it buddy