A-B11726557SM-AI KEY-NO MOW MODULE PLAOne New Aftermarket Replacement No Mow Module Key for Simplicity, Snapper, Murray, and MTD Lawn Tractors This yellow plastic No Mow Module Key (also called the Reverse Mowing Option Key or RMO Module Key) is the safety override component that allows the operator to run the mower blades while reversing. Inserted into the no mow module on riding lawn tractors and lawn mowers, it enables the reverse with blades engaged function and is a direct