Mac1000
ArboristSite Lurker
I recently acquired a Mcculloch SP81. I have a few questions on the carb it appears to be an SDC 51. It only has one adjustment screw on the top left corner of the carb body, I'm guessing is for high speed adjustment? The saw does have the idle speed adjustment screw that is adjustable on the outside of the saw.
here is a picture of the screw in the top left corner of the carb body that I am referring to
here is a picture of the screw in the top left corner of the carb body that I am referring to