If the broken piece is not jambed tight in there, try using a strong magnet to lift it out of there.
You will have to use an Easy Out to remove the old broken bolt.
generally to remove a broken bolt, you will need a drill and an easy out
If the bolt broke off inside the block, you can purchase a tool called an easy out. This tool allows you to remove any broken bolts of various sizes.
Remove the broken bolt and replace it with a new one. There are several ways to remove that broken bolt. You can remove the valve cover and weld a nut to what is left of the bolt, wait for it to cool off then unthread the broken bolt. You can also drill out the center of the broken bolt and use an easy-out. You can also drill into the broken bolt with a left handed drill bit, sometimes the drill bit will catch and spin out the broken piece. I would go with the first suggestion.
Use a bolt extractor to remove the broken battery bolt..This is the easiest way...
get a easy out from the part store.. you will also need a GOOD drill
You drill the proper size hole in to the bolt and remove it with an E-Z Out.
Depends on which pulley but most have several bolts holding them on. You can remove the broken bolt or simply not worry about it.
The broken bolt can be blown out by someone who knows how to use a torch - muffler-shop
Weld a larger nut over the broken bolt and let it cool. It will turn out for you.
the easiest way is to drill it out. drill a hole thru center of broken bolt, make sure it is smaller then the diameter of the bolt. after drilling use a easy out to remove the threads of the bolt. check that the threads in the head are ok! then put in new bolt.
Remove the bolt holding the blade to the left