So I was having problems with the starter drive and with the battery being original I decided to change them both out. I picked up this wheeler for $600 last December and had what appeared to be a head gasket problem. Head gasket thread

I got the drive gear in and the new battery but I am still getting the battery icon flashing. When I start it and let it idle it is fine, but when drive it or rev it the icon and speedo needle flashes. Did I do something wrong? Did I miss something?