Bird,
I understand that engaging/disengaging 4WD should have nothing to do with being able to engage the PTO, but somehow it does (at least on my tractor /w3tcompact/icons/shocked.gif). After trying repeatedly at different combinations (clutch, shift range into N, let out clutch, shift into H, shift into L, etc.) I finally tried shifting from 2WD to 4WD (using the clutch, of course), and Shazam!, the PTO then went right in. I'll admit that I don't understand why, and also that it might be something else that is causing it to work, but it hasn't happened this way just once - it has been a dozen or so times at least. So for now I'm going with what works, as strange as it seems.
By the way, is the mid-PTO not supposed to engage when I turn on the lights too? /w3tcompact/icons/smile.gif/w3tcompact/icons/smile.gif/w3tcompact/icons/smile.gif
Rob