It's entirely because of my own operation. The machine smokes because there is an overheating protection device, and there is a hint in the manual that "continuous operation shall not exceed one minute". Because Jiuyang cooking machine mainly depends on motor, which is protected by overheating protection device and waterproof device. Your machine is completely smoking because you are not skilled in operating it for too long. The plastic under the cutter head was worn off because you took off the cup before the machine came to a complete stop, which was caused by friction. I suggest you go to the local after-sales service department to change parts. Your after-sales service card has the after-sales service phone number of your area.