Frozen mixture control

[flyboy0681]

While shutting down today the mixture would not budge from full rich (thankfully) and the only way to shutdown  was to switch the fuel selector to cut off.  My question is are there any special instructions for starting up once I move the selector to the left tank?

[N201MKTurbo]

You shouldn’t be flying with a stuck mixture. If you just need to fly a short distance home, I will forgive you, or you need to fly it somewhere for maintenance. 
 

If it is stuck full rich, it should start normally. If you are trying a hot start with the mixture full rich, it might be difficult.

[PT20J]

I think the problem Rich is alluding to is that all you know is that the control won't move, but until you remove the cowling and look at the servo end, you don't really know what's going on, and if the cable has somehow become disconnected from the mixture arm on the servo, there is no way to know where the mixture is set. So, if it were mine and I needed to fly it to someplace to get it repaired properly, I would pull the cowling and take a look and maybe safety wire the mixture arm in the rich position (it's stamped ICO and R to mark the positions against the stop for each condition).