Newbie - Hitachi EX200LC question - Help Please

So I recently acquired a Hitachi EX200LC for use on our own property (purchased because the price was right & it only has 4200+ hrs) & have been running though the systems & correcting issues. I have the parts list manual & the Isuzu engine manuals & so far I have been pretty successful with getting everything in order but being a newbie in owning an excavator I am having an issue with the following….
There is a dipstick on the Hydraulic Pump (Double Assembly) which has a tag on it (model...

Newbie - Hitachi EX200LC question - Help Please

Newbie - Hitachi EX200LC question - Help Please