Re: recommended tools for chain adjustment?
You can get a chain breaker at most hardware stores for about 15 bucks. Harbor Freight makes a good one, and the reason they're so cheap is because they're made by some poor schlub in a Chinese sweat shop.
Otherwise, you can use a vice and a hammer and a smallish sized pin. I did that when I was too lazy to clean the garage and find my chain breaker. Ended up spending MORE time than if I were to have cleaned the garage and found the tool though.
Please keep in mind that I am utterly insane.