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..
 
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 I really didn't hear any unusual noises, but the video was short and definitly not running
at full power. 
 
If the carb drain screw is loosened while running and fuel (a "decent" amount)
comes out, the fuel pump should be fine.
 
****Try spraying some carb cleaner down the carb throat and see if it revs up..
 
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If the rod to crank gap(if worn out), you can sometimes "feel" it rocking the crankshaft back and forth
by the flywheel.  Get the piston about halfways up.  (Valve location doesn't matter)
 
 
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