
This DIY riding mower repair guide gives step-by-step instructions for replacing the seat switch on most riding lawn mowers. The seat switch is a safety device that shuts off the engine if it doesn't detect someone in the seat when the tractor starts moving. If the seat switch breaks, it won’t sense that you’re in the seat and will stop the engine when you release the brake. Replace a broken seat switch on your lawn tractor with a manufacturer-approved riding lawn mower part if it's defective.
Use this repair procedure to replace the seat switch in Craftsman, MTD, Troybilt, Husqvarna, Murray, Snapper, Cub Cadet and Ariens lawn tractors and riding mowers.
If you’re not sure the seat switch is the problem, follow the steps in this troubleshooting video to test the seat switch.