Got my Kubota 2 cylinder diesel set up on a test stand, with a gravity feed fuel tank made from a stainless steel water bottle. Adapted a GM Delco 10si 63 amp alternator on for charging duty. Cooling is being handled by a radiator from a 1983 Honda Interceptor 750 motorcycle. Ran it for a minute at idle and high speeds. Running great.
Even as I post this I feel guilty for saying anything bad about anyone. It is definitely not my usual style. I'm posting this because I hope there's something that I'm missing. This can't be that hard.
I sincerely hope that I'm wrong and I have to eat my words and post an apology.
The nature of the problem, the seed heads, is an issue with any model tractor you're mowing with. Regardless of the model tractor you have to occasionally clean off the front of the radiator so that the engine doesn't overheat.
It's just that with this machine I cannot get my hand in there to clean it. I have to take a bolt and a hose clamp off to get most of it. If I wanted to get at the battery or the bottom of the radiator there's even more stuff to remove.
Here's the specs page on Mahindra: