Can anyone tell me where I can download a manual for Technic SX - KN 550 I have tried the Technic support site but it does not appear there. In fact the only thing I have found was a picture (ebay sale add) in Germany. Is this a rare or odd model or something.

Try here http://www.pasc.panasonic.com/Epartr/PartsList.asp

Good luck

Bernie