Case 420 questions

We have a new to us Case 420 skidsteer. It is a a tier 3 machine as it has the remote mounted engine oil filter. We did not get an owners manual with. First is how much oil does the engine hold? Do I remove the front lower pan cover to get to the oil drain hose? Also where is the owner's manual to be located at? We were told under the seat and see the hinge on the front of the seat but know of no way to lift seat. Seen a small holder behind the seat that the owner's manual could have been located but nothing in it. Does cab have to come up in order to flip seat up and forward? Thanks for any help. Kevin

We have a 410, but I would assume much is the same. Operators manual should be attatched to back of seat in that little holder. Sounds like your machine was already robbed of it already. Mine was lucky enough to still have it, plus a parts manual on CD. You can goto casece.com and find the same info. Once your on the casece site, go to parts section, then to toolbox. There is a fluid selection section that can help you find some of the fluid lvl's.