I can save the mixer as follows. Everything at your own risk.
First remove the plug from the socket !!!!
Under the Mixer There are 4 screws. This can be with a screwdriver the one in the middle-free grinds (U shape) solve. Then you can the on - off switch with a little violence to the front pull out. The ring around it can also pull off.
Now you have to solve the sheave upwards.
For this purpose under the blender with a screwdriver block below the flutter.
Now you can solve the above drive pulley to the left.
Then you can remove the housing and clean all parts.
The installation is carried out in reverse order.
All work done at your own risk !!!!!!
I hope I could help you.