It can if that upper tube isn't fully into the engine. There's two small screws that attach it to the side of the engine, up by the cap. See of those are loose.
Awesome. The throttle cable I got was too short. I returned it and bought the longer one. I have yet to mow with it. I've been crazy busy with work and housework. I went to mow the other day with the throttle held open and a zip tied bag but then the neighbor came over. One beer led to another and I didn't cut the grass.
This piece is only 22$. I can't wait to use this thing!