My battery died on my p360 and couldnt be recharged so I disconnected it until I could get another one and it started back fireing and if feels as if it has lost some power on all the ranges. It almost feels like it is getting too much gas and it spits and sputters. It did it one time(backfired) when I still had the dead battery hooked up to it. Cant find out the problem. I wouldnt think it would be running it without a battery.

 

My 650 did the same thing, with a dead battery... You need it in there to make sure you have a good strong spark... Think electronics....

 

It is somthing to do with the electrical. Just buy a new battery and you should be good.

 

Yea I got a new battery and that fixed it. I wonder why they make an atv that cant run right without a battery?

 

They use a magneto - like a lawnmower or a piston engined aircraft.