Get a JX75 manual. The mower comes with a soft plastic hose about 12" long, that fits over the brass fitting. Put the hose on the fitting, then loosen it. Tilt the mower and the oil will run out. The JX85 has an oil filter, so it might hold more than the JX75. The differences in the mowers are the deck edge guards, ball bearing rubber wheels, oil filter, and better height adjusters. I bought these height adjusters(for JX85) and put them on my JX75.
If you choked a Smurf, what color would it turn?
I'd give my right hand , if I could be ambidextrous!