Riding Mowers & Tractors: 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 the problem. The alternator recharges the battery and powers the tractor while the engine runs. To check whether the alternator's charging the battery, use a multimeter to 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.
When your mower's battery is dead and you need to mow right away, use the tips in our video to safely jump-start the mower.
Replace the riding mower 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.
Replace the riding mower 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 engine won't start because 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.
These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.
If you hear the solenoid click but don’t hear the starter motor spin when you turn the key, follow these steps to replace it.
If the engine is hard to start or if the spark plug electrode is burnt or cracked, take 15 minutes to replace it.
Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.
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