The Husqvarna 505287301 Lawn Mower PTO Clutch controls the engagement and disengagement of the mower blades by transferring power from the engine to the cutting deck. It allows the operator to activate or stop blade rotation as needed during mowing. Replacing a worn or faulty clutch can help restore proper blade engagement and maintain reliable cutting performance. Check your mower mo... https://www.wholetoolbox.com/husqvarna-505287301-lawn-mower-pto-clutch/505287301.html