[RCW]

I would stick with the carburetor, properly set up it is bulletproof as long as the fuel is kept clean and is either fresh or preserved. Bad gasoline is the bane of all the ATV and UTV's anymore. It goes south in as few as a few weeks, and most people do not use their Mules enough to run a tank out that fast. Use of a good preservative is critical now days.

The EFI is next generation and even more sensitive to fuel quality than the carb. If you are having carb problems I guarantee you will have expensive EFI troubles in spades, not to mention enough cost in the conversion that it would be cheaper to just buy a new Mule.

I have a neighbor that has already fouled his new 4010 by grabbing a can with couple month old gasoline and filling up when he ran it dry. He conked out the next day after it set overnight and now has a problem that is going to cost bucks to fix. It is not a warranty issue when you use bad fuel.