Originally Posted by
Doozer
It'll be no problem for the ATV. I have the GB20 for my vehicles and it's worked great. I'd like the 40 but so far no issues, the GB20 works for upto 4L engines. I've used it probably 10 times on myself and others, and amazing. Has no problem for any of my vehicles, and even started up a truck with a 5L engine.
One caution, I ended up 3D printing a case for it, because the power button is on top and easy to accidentally get pushed on when it's just banging around in that little pouch.