NOTE: This has not been made or tested in any way by me, It is only a basic idea and will require further development. I do not own a 3D printer, (would like one, any offers), so totally un-tested in all respects.
IMPORTANT NOTE: Take care of all safety, such as fast starting Model Diesel Engine, fast moving parts, oil, heat. wear and tear, etc...
I am carrying out some re-design :-
All files need some work, but I believe the basics are correct.