Just get one of these from ace hardware. $2.79. $10 at home depot . One inch hole. The website won't let me publish the picture. It's a standard blade. Made in USA.
Only way I can get it to shut off is turning the petcock off and letting it run out of fuel. When I push forward where the cable connects to the carb linkage, the rpms will come down but it's still not enough to kill the motor. Tried lubing the cable with penetrating oil to no avail.