Philips razor, look at the cover outside.

The reason why the outer cover of Philips shaver rotates may be that the net rotates with the knife because of the deformation of the knife net, or that the network card can't live because of the wear of the tool rest. In addition, it may be because the net cover is not tightened and can move back and forth, so it can be driven by a blade. In order to solve these problems, we can try to tighten the net cover, replace the tool holder or adjust the blade. If the problem cannot be solved, it is recommended to contact professional maintenance personnel or contact Philips customer service for help.