From Section 3 page 4 of the Service Manual:

OIL PUMP BLEEDING

If air enters the oil system trouble will be cause to the oil lubrication.
Perform air bleeding to the oil pump and oil tube - oil path tube.

OIL TUBE, OIL PUMP AIR BLEEDING

Remove R Lower fairing (15-3)
Loosen oil pump indicator bleeded bolt and drain oil and air from oil tube and oil pump.

If all air is out, then reinstall bleeded bolt

* When oil tube is removed and oil cut and air enters the oil tube always bleed air from oil tube and oil pump.

* When bleeding air from oiltube and oil pump, always bleed air from oil path tube also.

OIL PATH TUBE AIR BLEEDING

* When oil tube is removed and oil cut and air enters the oil tube always bleed air from the oil tube and oil pump.

With a fuel ratio of 24-50:1, start engine with control lever in fully open position allow engine to idle up to 10 seconds and push oil from oil pump depending on if air is in oil path tube.

* Do not perform when muffler is hot. Do where ventalation is good and where there are no hot items.

* Use recommended engine oil
* Do not rev engine quickly.

Hope that helps.
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Charles Gallant