Clutch brake safety switch on yard machine riding lawn mower?

Not sure what your question is. But a typical problem with these switches is that the bracket get bent. If you look under the hood behind the engine on the left side as you are sitting on the mower you will see the bracket and the switch. Make sure the bracket is straight up and down. If it is sitting at an angle it will probably not make contact correctly. You can use a prybar or something else to put some pressure on the barcket and get it back to the straight position.