1. First, make sure that the rice thresher is powered off and stopped, and find the location of the rice tile. The rice tile is usually located at the bottom of the rice thresher and is used to grind rice into rice.

2. Use a suitable tool (such as a wrench or screwdriver) to unscrew the screws covering the Miwa. After removing the screws of the Miwa, loosen the belt connecting the Miwa with the motor shaft. This can prevent the belt from being damaged during disassembly.

3. Unplug the power cord of the rice thresher from the socket to ensure that the power supply has been completely disconnected. Carefully remove the rice tile with a wrench or screwdriver. If the rice tile is closely connected with the motor shaft, you can use appropriate tools to gently knock the rice tile to separate it from the motor shaft. Remove the rice tile from the rice thresher, check whether the rice tile is damaged, and clean it up.