I changed the oil in my 08 400ho yesterday. drained both tank and reservoir,
did the priming procedure.
But it now "sounds" like air is being blown into the oil tank.
Re primed several times. still makes this sound.
There are a lot of air bubbles in the oil on the dipstick.

I would appreciate any info.

 

When you primed it, did you hear the air whoosh from the vent line after pinching it off for 20-30 sec at idle? If you don't hear it odds are you have'nt primed it properly. At least thats how it is on my 500.

 

Re primed today. Held vent tube for 45 sec. Had the big whoosh. But it still makes a sound like air being blown into the oil.
Any ideas?

 

Mine has had bubbles and bubbling sound in the tank since brad new and after a few oil changes....

 

As long as you did not disconnect the oil line to check the screen they is no need to bleed the system.