Pipe #4 in the parts pdf-page 40 GU088 - GRiSO V 8V 1200 2007-2013

Those with GU088 - GRiSO V 8V 1200 2007-2013.pdf handy...
Where does pipe #4 connect to???
TIA!

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Which pipe? Fuel pipe? Breather pipe? Drain pipe? Exhaust pipe?

That’s the stepper to airbox pipe.

I'm somewhat confused, because the parts book shows a breather line from the oil separator running back to the airbox....where #4 appears to be connected instead on mine.
I'm looking at this with the tank on, so my view may be obscured a bit as to what else is going on....

There’s three hoses connected to the airbox.

1. Idle Stepper Intake
2. Blow-by
3. Drain

There are two drains I think. One at the back, one at the front. According to the airbox diagram the breather goes to the LH spigot on the upper front of the box but I could of sworn it goes to the right and the stepper to the left??

Stepper looks like it's hooked up to the left on mine. I found that the blow-by pipe was -not- hooked up to the airbox...apparently for a while.  Surprisingly, very little oil coming out of it, but I could smell it.