Mystery fuel pipe

[Rob Cowell]

Refitting my fuel tank after welding up suspension bracket. I seem to have a spare pipe! Dropped tank again thinking I'd pinched it's friend. As far as I can see on the parts diagram it ends in a grommet. Even with the auxiliary tank fitted. Anyone know what it's for?

 

[Shayne]

Is it a breather ?

 

[Sag]

I would of thought the same as Shayne by the looks of the end

 

[Rob Cowell]

Thanks chaps, makes sense. There is a breather back to the fuel cap, but of course that only helps when the cap is removed for filling.