This is what I did to solve my fast idle problem on the MB200 baja which has the same exact linkage as the predator 212 cc engine. I was able to use the plastic screw to adjust the idle,I did not take the governor out on mine.
https://www.youtube.com/watch?v=OwshTzB3Roo
https://www.youtube.com/watch?v=OwshTzB3Roo