I have a 125cc Coolster atv I'm not dumb when it comes to these things but a little lost being it ran and started fine about a month ago (last ride) tryed starting it today to run the carb dry to not clog up but turn the key hit the button nothing not a click not a sound.. yes I pulled the brake, battery is charged, fuse isn't blown, grounds are clean and good so to me it makes no sense why it wouldn't crank over at all. Anyone have an idea?

 

Check the kill button hasn't been knocked by accident. I occasionally get bikes in for repair and that is what is wrong. Next, check if other electrical items, horn and/or lights etc, work. If they do, it could be the brake switch, is the brake light working? Or the starter button, or the solenoid. Start at the solenoid and check if the thin wires are getting power when you press the start button with brake and ignition on. I use a heavy wattage 12v test lamp for this as you need power, not just volts to work the solenoid. If one wire isn't getting power, trace it back until you find the fault. If both wires are getting power but solenoid isn't clicking, you must have a faulty solenoid.

 

I simply undid positive on battery to move solenoid without getting shocked, reconnected battery now it works fine guess I reset something but taking away the power.

 

No, either the pos terminal on the battery wasn't connecting properly, or moving the wires re-connected a bad connection.