Mower runs but battery light comes on and goes off quit a few times what do I look for?

The PTO clutch is an electro magnet. There is probably a dead short within the clutch body. Replace the Clutch.

The charging light (as you call it) might not be a problem at all; and I question whether or not there is any adjustable regulator. Now the fact that the voltage light comes on seems to indicated that it is working properly: as the PTO and/or lights add load, the light comes on to indicated that battery reserve is taking up the the slack until battery charge builds back up to where it is resisting further voltage input. Sometimes it is just a matter of continuing until the light goes out. Occasionally, I find that switching the engine run switch on and off momentarily will reset and extinquish the voltage indicator light. Remember also that battery reserive might have drained in storage so had not built up if lights or mower are switched/started soon after initial engine startup. Finally, too frequent charging of battery could be sign of diminishing battery capacity or increasing battery internal resistance. All said, though, I would be more concerned by the voltage light's coming on without associated sudden load increases.

most likely yes but what brand/model do you have ???

SOUNDS LIKE A BAD GROUND, OR OTHER ELECTRICAL CONNECTION, DOES THE ENGINE QUIT.

put a volt meter on the battery then start it and check the voltage before and after if it is not more running it's not working if it is not charging remove the top cover from the engine and see if mice chewed the wires

try and charge it with it disconnected from the mower they see if it died over night if not place a test light between the battery and the negative cable if the test light is on there is a draw then unplug switches and relays one at a time watching the test light when the light goes out that circuit is the draw a bad diode in the charging system will cause a draw as well that is under the flywheel

MTD HUFFY 15HP BRIGGS

NEW BATTERY TIME

It sounds like the carburetor is running out of fuel.First make sure the tank is full then loosen or remove the gas cap when it starts sputtering to see if that corrects the problem. Then with engine off remove the fuel line that goes from the tank to the fuel pump,hold it low and see if any fuel flows out of it,if not lightly blow air backwards to the tank,(with fuel cap off),then see if the line is plugged. Next remove the fuel line that goes to carburetor from the fuel pump,crank the engine and see if any fuel flows,if so the carburetor should be cleaned by removing it and disassembling it.

Many of the newer riding mowers slowly drain the battery due to the electronic components. The best way to prevent the battery from draining down in between uses is to install a battery disconnect switch. It only takes a few minutes to install and once it is installed it only takes a simple turn of the knob to disconnect the battery and prevent the battery from draining down. Most major automotive parts stores have them in stock. You can also get one from a mechanic shop whom may have greater access to auto parts.
If you can't find a battery disconnect switch, simply disconnect the negative terminal from the battery when not in use.
Hatter1