ORIGINAL: Oldbob
Well I received my SK 50 yesterday and today it was bolted to the test stand and ran twice. I followed their break-in procedure and during the first run the carburetor was sticking when I tried to close or open it and after the second run the carb. barrel would not turn at all. Need to call Kangke tomorrow.
Will keep you posted.
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I have had engines of all brands do exactly what you are describing.
The problem is a piece of flashing that has jammed the carb barrel at the slot where the travel limit screw protrudes into the throttle barrel.
Remove this screw and you'll be able to slide the throttle barrel out with a little effort. Check the throttle barrel for flashing near the screw slot. Most likely, the flashing will be in the carb body. A few gentle swipes with some emory cloth or 400 wet or dry will rid you of the problem. I've had Enya engines with this problem. If it can happen to an Enya, it can happen to any engine. No biggie. <G>