Drz400E oil return tank question

Sorry I know this has been covered but I can not remember the answer or find it.


I have a 2004 DRZ400E model (electric start) and the oil return tank has an open outlet. It is the rear port facing left that is just wide open (the front 2 are connected as usual to the cylinder head and case). Shouldn't this have at least a hose routing somewhere, maybe I knocked it off but I can not see it anywhere.


ps here's a screen shot of Suzuki manual that states it is to be routed to air box but if memory serves me correct I believe this E model air box does not provide a port for this.




Any help greatly appreciated.

E model is the lower picture.  The vent hose routes to just above the chain by the coolant catch tank.

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