Kipor 3000 ti with rod knock?

I just got this for $50 but not sure I got a deal . .it is a kipor 3000ti and I got it running but it has what I think is a rod knock.  Can anyone tell me what this knocking noise is?  I took the valve cover off and all seems ok but haven't gone any further.  Thanks!  Ok so I cant upload the video as its too large but it runs and idles but has a loud rhythmic banging noise.  Ideas?!

Hi Scott . . it is a Kipor motor 4 cycle 1 cyl .  some of the parts are Honda.  I took the valve cover off and everything looks ok . . oil is clean.  I bought it as a non runner for $50 and it functions and produces electricity now but . . . . . Try this link 

wow wont let me post anything . . . hobbytalk.com has the video
 

Ok, saw and heard the very short video.
 
It's hard to tell as the engine seems to be running bad, / slow, like loading up.
 
Can you get the engine to run at it's full 3,600 RPMs?
 
If equipped with an auto idle, turn it off so it'll rev..
 
.