Many people can help you with particular questions, especially maintenance. Parts for a relatively unusual tractor and parts information may be more difficult. First get the japanese parts manual-although written in japanese, you can get the part number from the diagram and index which is in Arabic numbers. From there, several members of the board can help you get parts. Second, often there is an American model that is similar and you can get repair and parts manuals for that model. If the part is of the same number as a US model, then Yanmar's US dealers can get it for you (although you may not want to tell the dealer that it is for a grey market tractor). Many parts are identical from tractor to tractor so even though you have an unusual model, the part may not be unusual. Most JD dealers will look at you as if you are a criminal and will refuse to help with parts, but some do help. Yanmar does make engines for JD and in the past even, apparently, made entire tractors. If a JD part number is the same (i.e. if the engine is the same as in a JD) then a JD dealer may be able to order the part. Oil filters have cross overs to automotive units that can be bought at local auto parts store. Oil is for diesels. Most tractors use JD 303 hydraulic fluid. If the current filter is japanese, often you can go to the web site of Fram, Purolator, etc and the web site can cross it over for you. No one knows whether these filters are better, worse or the same as the yanmars, but generally automotive filters have better particulate filetering capacity. I guess you could get original yanmar filters, but they cost quite a bit more. Seals, if you can't find them often can be bought by removing the old one and taking it to an auto parts store.