The TD-24 was started on gas and switched to diesel, like the MD, etc. The front "crank hole" could be used to drive an auxilary hydraulic pump in some applications. I think you would have to be super strong like Superman to actually start one with a crank. I doubt if it has ever been done. I used to easily start a TD-6 by hand but that was 247.7 cubic inches vs 1090.6 cubic inches for the TD-24, over four times as many.