What cause a battery not to charge on a craftman lawn mower

How long does it have to sit before it starts again? Does it need to be jumped? If battery is old or not recharging you can loose power. I had a regulator go bad and mine would keep dying. I would charge the battery and mow for awhile then would die again. Have you checked battery and regulator?

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is the belt slipping?is it a auto trans with low fluid level?

I suspect that the alternator/generator has gone bad, preventing the battery from chargine, or generating enough voltage to keep the electric pto on your mower engaged.

I think that it is located on the engine beneath the flywheel.

I hope this helps you.

The engine is not charging, you need to have the charging system checked out, could be the charging coil or the rectifier.

I would say so. Recharge the battery and load test it. It probably will say to re place it.
You can have a auto repair center load test it

I think you should check the charging system. You said you replaced the battery a few weeks ago. Even with the charging system not working, the battery might have enough power for a dozen or more start-ups; but using the lights may have drained what power was left. Get or borrow a battery charger and charge your battery. If mower then seems to be working fine, measure the voltage across the battery when the mower engine is running at normal speed (not idling). It should be 13.5 volts or more if the charging system is working. 12 volts or less means it's probably not working. Either test or replace the regulator/rectifier. Please rate me if you think this helped, thanks!

most likely the blades are still in the on position,but you have a seat switch, parking brake switch, and the blade switch, also the mow in reverse key switch. if mower dies once you let out the clutch in reverse with blades on and key wrong.

Are you getting a lot of smoke? If so the oil is getting past the rings and burning.

sounds like it didnt take a charge; make sure all electrical connections are good and that it is getting power to the built-in charger. is there a indicator showing that its charging? are all the wires on the mower connected? you may need to get a new battery

sounds like the stator under the flywheel is bad that is what charges the battery