Welcome new guy:
I do not know if they make this cable for this application.
However I see no reason why you can't fab something up using bicycle cables.
I use bicycle cables to replace the e-brake cable on the FL350's I own and on machine that are brought to my house for re&re.
You can cut the length you want and make the ends you need with melted wheel weights, solder or something similar. Use your imagination.
I do have a negative comment though. That
Engine in that machine is gona be dangerous.
Just my opinion.
CO