Airbox - pipes on underside

[Firestarter]

Can someone do me a quick favour. On the LHS of the airbox, there's a breather pipe leads to the top of the rear cylinder. On the RHS, there's a stub for one, but no pipe. Is this right? Have looked on the parts diagrams, and looks like it's for the vapour recovery system so not relevant to us. Should there be a plug for this or something? Or just open?

Ta muchly. If anyone finds a post related let me know, couldn't find anything...

[GregD-UK]

Hi all,

Should be a plastic cover over it, some use it as a vacuum pipe for their scottoiler