Here is the engineering drawing for the throttle lever in bild0416. Dimensions are in inches.
In the Sat Jun 1 09-39-16 photo, there are numbers and letters visible. Most parts had a parts number somewhere on them. From what I can see, it looks like 3-???10. Maybe 8-???10. If I had a more complete or a full part number, I might be able to find the engineering drawing for it also. Note the letters ASSY on the part. There may be other letters before them, for example DOOR. That would be helpful also.