Davis Taskforce 500 Manuals

I am looking for any manuals for a Davis Taskforce 500.I have called numerous sources all dead ends.It has a d100 backhoe,trencher,conveyor and Onan j60 engine.Help appreciated!

I do have a D100 parts manual for sale but the 500A Trencher Case only made and sold a Operator manual for the 500A Trencher. Not a clue why so trying to dig a manual is like looking for a needle in a hay stack. Even Davis that was really the one selling these unit to Case do not haVE A MANUAL for this model. I have many manuals for the trencher but do not have a clue which one is ANY THAT ARE COMPATIBLE WITH THE 500 a

I know this is an ancient post,but I thought I would update.I did manage to find a reprint operators/parts and repair manual from L.F.George in Wisconsin.pricey but oh well.I printed off a parts manual for the d100 backhoe from the Case site.I did manage to score parts an service manuals off eBay for the J60 on an engine.I pulled this machine out of a field 5 years ago it had been sitting outside for a while so the engine was stuck and had water in it.I freed it up,repaired the magneto and carb and replaced all the fluids.I got it running finally,timing the magneto with the engine in the machine was tough trial and error but I finally got it and I have been using it occasionally ever since.(I just recently got the onan engine manuals.)So even though it has been running it has been using a lot of oil.Like a quart to 8 hours.Not surprising with the engine being stuck.So this winter I finally did what I have been putting off,I removed the engine for a full rebuild.The engine had never been apart,the original rod bearings from 1964 were still in it.I had to get parts from all over the United States and could not find pistons more than .010 oversized.It is back together now and running well I have used the backhoe for a couple of hours and it definitely has more power than it has since I have owned it.I will try to post pics soon.