Put fresh new battery in and in 2 days the battery is dead?? The Charging sysytem is working cause I can let sit for abit, check the battery then start the atv and the battery voltage goes back up? Will the Voltage Regulator do this if its bad?? Please Help!

 

It could, it uses rectifiers(diodes), and when those start to go bad they will allow current to flow when they shouldn't normally.

 

One way to test to see if you have a short in another place besides the regulator is to charge the battery out the machine. Check voltage with a meter. Let the battery sit for 12 hours and recheck the voltage and note any drop if there is one. Then install the battery in the machine and UNPLUG the regulator. Let the battery sit for 12 hours and recheck voltage in the battery.

If you have No voltage drop then you probably have it isolated to the regulator. If it still drops with the regulator unplugged your wiring short is elsewhere. I have had to do this before and the issue was a shorted wire under the instrument pod and not the regulator.

Also on a side note my neighbor down the road has learned the hard way NOT to charge a battery in the ATV with a High amp charge like 10amps. He fried most of this wiring system, took out the regulator and the CDI and almost started a fire! You should only use low amperage like 2amps or less. Preferrable hard wired in like the battery tenders can be.

SJ