My outdrive and shifter seemed working fine when the boat was winterized last fall However I am now unable to get the shifter out of neutral. It moves freely but feels like it isn't engaged to something. Any ideas?

The end of the shift cable may have separated, causing it to fall out of the "jaws" that grasp it in the Bravo shift mechanism. Check the shifter end first, where the cables attach, but it's likely that if that all looks correct then the drive will have to be removed.

Just guessing, but thinking when the drive was reinstalled they didn't make sure the cable end was not latched onto the shift linkage

A proper winterization would consist of pulling the drive

Good point. I don't winterize down here in FL.

We dont have the drives pulled for winterization. All systems get antifreeze and then shrinkwrap is done on my lift.

Well then disregard and go to DrFG

I pull every year, check alignment, gimbal bearing, change lube, inspect boots, U joints and cables. Reinstall with drive full down position for the winter nap

Ayuh,..... Is the controller in "Throttle Only",..??

Just to be clear...is this a single lever throttle/drive control or separate?