Riding Mower and Tractor: Dead battery

During the off-season, the battery can lose its charge. Charge the battery fully before storing your tractor for the winter. You may also need to charge the battery again before starting the tractor in the spring. Replace the battery if it won't charge. If you charge the battery with an external charger but the battery drains when you're running the tractor, then the engine's alternator could be defective. The alternator recharges the battery and powers the tractor while the engine runs. To check whether the alternator's charging the battery, measure the DC voltage at the battery with the engine running. You should measure between 13 and 14 volts. If not, then you may need to replace the alternator.

View these videos that can help you deal with a dead battery:

These repairs may help solve your Riding Mower and Tractor problem:

Replace the riding mower battery

Battery

If the riding mower or lawn tractor engine doesn't make any noise when you try to start the mower, it might be time to replace the lawn tractor battery. A good indicator that the lawn tractor needs a new battery is if you charge the battery, and it loses the charge quickly.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the alternator

Alternator

The alternator attaches to the engine under the flywheel and generates power for the tractor while the engine is running. The alternator also recharges the battery while the engine runs. If the battery drains while running the tractor, the alternator could be at fault. Check DC voltage at the battery with the engine running. You should measure between 13 and 14 volts. If not, then you may need to replace the alternator.

For manuals, repair guides, and specific part recommendations, enter your model number.