Hi, my name is XXXXX XXXXX I have been in the home improvement and repair field for 20 years. I will be very glad to help you today. If you turn the beater the opposite way that it spins during use. You may have to turn it quite firmly but what has happened is that the teeth have become misaligned and are no longer in the slots.
So you will be turning it like that to get it aligned again.
If you look at the cog is it stripped on the slotted spot at all? There is also an adjustment screw to tighten so that it fits tighter.
It is not fitting as tightly as it used to. I believe there is a screw to tighten it.
Do you see a cover on the top? There is a tightening screw there. What had happened is that it was loosening from use and got stuck in between slots. Tightening that screw a bit so that the cog fits snugly will prevent it from happening again.
Were you able to tighten it?
I haven't heard from you. Was the information I provided helpful?
Sorry - not had chance to check until now. Yes, think we've solved the problem. Many thanks. Will rate now.