Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Is your mower an electric start, or manual start? One of your safety switches is an Operator Presence Switch. This switch works very similar to a Seat Safety Switch. Example: If your seat safety switch, or the wiring connector that attaches to your seat switch is faulty, your safety system will think that you are off of your seat, although you are sitting in your seat, and cause your engine to shut down, when you release your brake pedal, or attempt to engage your blades.
Your Operator Presence Switch works based upon the same principals. The safety system on your Scag thinks that you are not in a safe operating position, and is causing your engine to shut down when you attempt to either release your brakes, or engage your blades.
Please click on image below.
Double check your Operator Presence Switch, and also check the wiring connector that attaches to it.
We can continue from here. Thanks!