To change a lawn tractor battery, locate the battery and its cables, clean any corrosion off the cables, and remove the negative and positive cable clamps to take out the cables. Replace the old battery with a new one, and tighten the cable clamps correctly, according to eHow.
Before changing the battery of a lawn tractor, be sure to buy a new battery specific to the tractor model. To change the battery, first determine its location. Typically, the lawn tractor battery is located under the hood or seat of the unit. Once you locate the battery, switch off the tractor, release the latch, and remove the bar or tie-down strap that holds the battery in place, says Do It Yourself.
Next, scrape any corrosion off the positive and negative terminals of the battery cables with a wire brush or with a paste of baking soda and water. Clean and dry the terminals with a cloth. Loosen the negative cable clamp first and then the positive clamp with a wrench, and remove the negative or black and positive or red cables from the battery terminals in that order. Pull the old battery out of its holder, and replace it with a new one.
Connect the cables of the new battery to their respective terminals, starting with the positive cable, and reattach the cable clamps using an adjustable wrench. Finally, replace the bar or the tie-down strap.