I do it this way.
First, prime the pump and eliminate air in the oil tank to pump line. When the cover is removed from the oil pump cavity, you can see the end plate on the oil pump, held in place with two small Phillips screws. I loosen, but do not completely remove both screws, so I can "tilt" the small cover on the end of the oil pump, outwards at its top edge. This gets oil to flow out of the end of the pump, while purging all the air out of the pump inlet cavity.
When this operation is done, I use a 10mm boxed end wrench to hold the oil pump cable "wheel" to be held in place so the last line on the wheel aligns with the line on the post next to it, pump full on.
I then take a squirt can of two stroke oil, along with a short section of clear hose, and fit it, one carb at a tme, to one of the bowl vent holes in each carb, and pump a small amount of oil into each carb bowl, usually, five full "squirts into each bowl. This gives me a small premix for each cylinder, and doesn't load the plugs up while priming the pump.
I then fire the engine up and let it idle, while watching all 3 oil lines push oil and air through them. When all 3 lines are completely full of oil, with no air in them, I remove the boxed end wrench, make sure the oil pump cable adjustment is correct, and put the cover back over the oil pump cavity.
Oil pump bleeding is the first "engine running" operation, then, carb balance, then, with engine shut down/OFF, cable/pump adjustment is the LAST operation.
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