I was wondering, if a chain on a Blaster has about 1.6 inches of slack with the adjustors all the way in, approximately how many links should be removed to bring properly taught once the adjustors are back out?
*I am asking because I don't have a chain breaker, and need to have someone else do it.

 

Number one: DON'T DO IT!
Your chain is obviously gone, as in stretched beyond practical use (Assuming you haven't replaced your sprockets with smaller ones, that is). Removing links will do nothing but further damage your sprockets if that hasn't already ocurred. When the chain is stretched beyond limits you can remove links, re-adjust the slack, and then grasp one link at the center of the rear sprocket & pull it away from the teeth. You'll find that it will allow at least 1/2 a tooth to show, meaning that adjustment is useless.
On an otherwise servicable chain that has broken, removing the damaged link is an option, but not on one that is worn out. While your'e at it check out the sprockets for hooking. Putting a new chain on them will ruin the chain quickly.

 

How do you take out the bolts holding on the rear sprocket, because the spacer's edges curve up and it hold the bolt. Do you just go from one side with an open ended wrench?

 

just go ahead and use an open end wrench to do it. the bolts will turn even though the spacer plates would seem to hold them from turning.