Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
# 24 in the parts list above? You loosen it and then push the plastic retainer on the outer housing, which is catching the shaft and not letting it loose.
Di d you see the parts link I sent?
You turn the knob CCW to loosen it, but it has a groove down on the tip end, that looks to be held with plastic clip, you have to pull up on the clip end , so the assembly will slid out.
If knob is slipping, just pry it off, to give access to the shaft with hex.
Yes, ccw with wrench