Your PTO is not releasing the clutch. Pull the PTO and thoroughly inspect it. It may be that the bearing is seized.
What you are probably hearing is the little "brake pad" (for lack of a better term) that the blade pulley rubs against to stop it from turning. The belt always turns. So without something to keep the blades from turning they would never stop.
Vital Slash + Poison Blade = Stop Blade
you can not
If the blade turns clockwise, then the nut will be left handed thread, meaning to remove it the nut has to be turned to the right .. to tighten then would require turning to the left. To remove the fastener that holds a mower blade on, turn the fastener in the direction the blade rotates to cut the grass. Look at the blade, find the "leading" or sharp edge, and, while holding the blade, turn the fastener in that direction. There is a good reason that this is always true. It has to do with the physics of the machine. Imagine the fastener being "held in place" to stop it from turning as the machine starts. With the machine starting to turn, the fastener will tighten. The last thing you want is to have the fastener become loose when the machine is running. The blade could kill or injure someone if it came off. That's why the fasteners that hold the blades on these machines always come loose when turned in the direction the blade rotates.
When you stop getting cut.
stop it from overheating
When using a dado blade on a table saw, it is important to follow these safety precautions: Always wear safety goggles and hearing protection. Make sure the dado blade is properly installed and secured. Adjust the blade height and fence position before turning on the saw. Use a push stick or push block to guide the workpiece through the blade. Avoid cutting materials that are too thick or hard for the dado blade. Keep your hands and fingers away from the blade at all times. Turn off the saw and wait for the blade to stop completely before removing the workpiece. Follow the manufacturer's instructions and guidelines for using the dado blade safely.
When using a dado blade on a table saw, it is important to follow these safety precautions: Always wear safety goggles and hearing protection. Make sure the dado blade is properly installed and secured. Adjust the blade height and fence position before turning on the saw. Use a push stick or push block to guide the workpiece through the blade. Keep your hands and fingers away from the blade at all times. Avoid cutting small pieces or loose materials that could get caught in the blade. Turn off the saw and wait for the blade to stop completely before removing the workpiece. Follow the manufacturer's instructions and guidelines for using the dado blade safely.
Stop wearing costume jewelry.
To remove the fastener that holds a mower blade on, turn the fastener in the direction the blade rotates to cut the grass. Look at the blade, find the "leading" or sharp edge, and, while holding the blade, turn the fastener in that direction. There is a good reason that this is always true. It has to do with the physics of the machine. Imagine the fastener being "held in place" to stop it from turning as the machine starts. With the machine starting to turn, the fastener will tighten. The last thing you want is to have the fastener become loose when the machine is running. The blade could kill or injure someone if it came off. That's why the fasteners that hold the blades on these machines always come loose when turned in the direction the blade rotates.
I changed the blade belt on my Murray mower. Now one blade stops and goes. If I lower the deck the blade stop . What did I do wrong?
To remove the fastener that holds a mower blade on, turn the fastener in the direction the blade rotates to cut the grass. Look at the blade, find the "leading" or sharp edge, and, while holding the blade, turn the fastener in that direction. There is a good reason that this is always true. It has to do with the physics of the machine. Imagine the fastener being "held in place" to stop it from turning as the machine starts. With the machine starting to turn, the fastener will tighten. The last thing you want is to have the fastener become loose when the machine is running. The blade could kill or injure someone if it came off. That's why the fasteners that hold the blades on these machines always come loose when turned in the direction the blade rotates.