[nedro]

1/4"???
rotate the sprokets to the tightest place on the cog, then try to push the chain up twards the swingarm. If it hits, it's too loose. If it is within a half inch or closer to the swingarm without touching, you're fine.
I thought it was about 1 1/2". Go figure.

 

[nedro]

you're right!
How come nobody else caught that?
I'll change my original post. Thanks.