This video from Sears PartsDirect shows how to unlock and change the default start code on a lawn tractor with a Smart Switch Ignition system. Smart Switch ignitions let you program your own 1- to 5-digit code to start the tractor without a key. You can usually reprogram this code with a simple key combination, but the factory default start code is locked on some tractors. We'll show you how to reset the default code and unlock it.
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