Poulan (and others) carburetor adjustment tool

youmagine

My Poulan string trimmer required a crucial carburetor adjustment. The screws are knurled, recessed knobs demanding a specialized tool. Even on eBay, they charge $40 for what amounts to a basic screwdriver. This handy device allowed me to make the precise adjustment. To be honest, it didn't print very well, as the internal splines are too small to print on my Prusa. So, I essentially printed a plastic cylinder that meshed with the screw splines adequately enough. I'm leaving the splines in the scad file for anyone who wants to print this in metal on Shapeways or similar services. If so, I would tweak the file beforehand, as I think the ID might need to be reduced slightly and a gentle taper added. Additionally, if I were getting it printed, I'd probably double the length of the hex shaft - I kept it short here for strength but found it too short to push in easily with pliers, so I had to use them anyway. Nonetheless, this was sufficient to give my weed trimmer carburetor's low speed jet the 1/2 turn it needed to run properly.