Hi all,
I'm about to install a Walbro carby repair kit, K10-WAT in my Ryobi wipper snipper. Apparently these carbys are common to a wide range of brush cutters, chainsaws, R/C models, etc and I found some info on the following sites which others may find useful:
http://wem.walbro.com/distributors/servicemanuals/

http://www.drystacked.com/Walbro%20Carburetor%20Theory%20ebook1.pdf

http://www.gardengrapevine.com/ChainsawCarbRepair.html

http://tech.flygsw.org/walbro_tuneup.htm

http://footflyer.com/fix/motor/carburetor/walbro.htm