I remember well rScotty's posts regarding his backhoe purchase. And, he continues to provide insight's that we all benefit from! :thumbsup:
Steve (jenkinsph) has pretty well covered all the biggest issues regarding the things to be aware of and what to look for when checking the 110 over.
The skid plate is an option that can be added later. It's manufactured by a company in Alabama. It really is mandatory - IMO. CurlyDave sold me on buying the skid plate when I ordered my backhoe. Critical option!
The 3rd function on the front loader tends to be a common feature on many 110's. Nice to have for a
grapple fork. I'd be surprised if it's not on the tractor..
Good option to have the 3pt hardware. However, if you don't plan to use the tractor as a mowing, raking, disc harrow, post hole digging, etc. etc. machine... well, it might not be a deal maker/breaker, then. You could buy the hardware from Deere (expensive ~ $1,300) as it's the same as what is used on the 4x20 series tractors if you decide that you really need it.
Same with the 3-optional rear mounted SCV's - they're nice to have but not essential to using the 3pt or even mandatory to have when using 3pt implements. They do make operating a number of different attachments easier and more efficient. Can't be added to the tractor later.... at least without paying an obscene amount of money and some detailed work!! For all practical purposes... if they're not there - they're never gonna be there!
Thumb is an incredible tool on the backhoe! But, 10's of thousands of backhoes have been built thru the year's and they never had thumbs. Very nice to have (I won't buy another backhoe or excavator without one) but not absolutely critical.
The only other considerations are the standard protocols - leaks, smoke and bad noises - grinding, rattling, etc. Use both brakes, all the control surfaces - levers, knobs and switches. Drive the tractor in all the ranges. Check the fluids for smells, colors and any contaminants.
Look for cracks, welds and bent or warped surfaces on the loader arms, boom and dipperstick. Gouges or nicks on the hyd cylinder rams.
Hopefully, the machine will pass muster (only has 800hrs unless it's got a new instrument cluster) and you can agree on an acceptable price.
AKfish