The pony motor heats up the cooling system of the main engine. If you are having trouble starting the pony motor, it may need a tune up or you just need to play with the settings. Get the choke and the throttle just right and they will usually fire right off. I have run our old D6 when it was 20 degrees out and the pony motor will usually start with 2 or 3 pulls. If you can't get it started with say 10 pulls, time to walk away and try later. I grease the machine while the pony motor does it's job (warming everything up) Water gets up to 100* and the main engine fires right off and I'm off to work for 8-10 hours. :thumbsup: There were a lot of people that put electric starters on their ponies, but we have just never felt like there was a need to.
Good luck with your new grader.