I have an electrical issue on my 87 350 TRX. The battery doesn’t recharge after use and it will die after a full day of riding. The battery tests at 12.5V and drops to 10.5-11V after starting and at idle. It doesn’t increase when revved. The person who sold it to me ran it without a battery in it, but he did use a portable jumper to start it and left it connected while running.

I just ordered a new rectifier/regulator, but could it be the stator? This will be the 3rd regulator/recifier I’ve replaced and it hasn’t fixed the problem, but the others were used and I can’t be sure if they were good. I have no idea how to test either, so info on that would be great.

I’ve read how to test and change a fuel pump on here and you guys helped me isolate a fuel issue to the fuel pump cutoff switch. I appreciate any advise you guys offer!

Thanks for all you help.