With the V4 once it has been running you need to wait for 2 hours to check the oil. It takes a long time for all of the oil to flow from the heads to the sump. This is why dealerships overfill them.
I just changed my oil. I drained it over night, put it in 6th gear and rotated the back wheel a couple of times. (That's a work out and a half, use your legs. ;P) That turns the oil pump and gets a lot more old oil out. Then I put in 3.2 liters of new oil a little at a time because, as mentioned, it takes a LONG time to get the oil down to the glass. I left, came back and the sightglass was full to the top. This turned out to be some air bubbles blocking the flow. I cranked engine without starting, bubble popped and found I was still down that .3 liters. Takes about 3.5 - 3.6liters. NOT 4! If you over fill, take an old spray bottle, drop its thin hose down into oil fill port, and squirt out into oil bottle the extra. Discard that it'll be dirty. Just go slow filling.
Taking the oil filter cap off: It is now at the bottom of the engine near the oil plug facing down. It has 3 screws. Take them out then put in the same holes M8 screws which are larger and won't enter the cap's thread holes but will push out the cap. Turn the 3 screws in 1 turn each at a time to extract the oil filter cap with extremely even parallel extraction.
Other detail, after overnight oil draining, use brake cleaner spray to clean the oil plug hole not getting too much into the oil pan. Use RTV silicon either Black Ultra with high heat rating / petroleum resistance, or Red RTV silicon with same character but very hi heat rating. Racing engine version. Put on oil plug bolt also cleaned well, and drilled for wiring. I wired mine to the exhaust spring hook.
I used nylon M8 bolts to get oil filter cap off. Also mark a spot on the cap to know how it goes back on. It's asymmetrical but quite optically confusing when lying under your bike.
This is for a V4S - Check the V4R torque specs. Might be different.
You may have to eyeball the drain plug torque. It's a ..... to get a socket wrench to. You may need an open end wrench 14mm.
Drain plug: target of 14 Nm with a range of 12 Nm (minimum) - 16 Nm (maximum)
Filter screws: target of 10 Nm with a range of 9 Nm (minimum) - 11 Nm (maximum)
