how do you take a link out of the chain?

i have a chain breaker.
RG-01%20chain%20breaker.jpg


would a lot easier than grinding.
you just put the claw part around the chain, make sure the spike is aligned with the pin and you turn the handle till it pushes the pin in a little.
 
that one is either the exact one or very similar to the one i have. it took me like a minute to take 2 links out.
 
ok then take the master link out, have the carrier all the way forward. then check to see if you can even take a link out and it still fit.
you might need a new chain.