ID parts, Seca II

The haynes manual is light on some details. Does anyone have a link to the FSM for a 92 Seca II? I am getting a bunch of oil sucked into my intake.

I have what looks like a fuel line that goes nowhere from the gas tank:




And I have all these other vac lines that go from the fuel/air system to the crankcase, like this, what is this that goes from the airbox to here in green? The manual mentions a fuel filter, is this it in the yellow box?




And this seems to be a vac check valve but I don't know which way it's supposed to go. What does this vac line do? It goes into the gas tank and I notice some rust in the hose.

 

Im not sure what that line gos to but I would check and see if the carbs are leaking down because it sounds like you have gas in the oil. Which is causing it to puke into your air box though the crank case breather hose.

 

All I know for sure is that the nozzle on the bottom of the tank in the first pic is the overflow. When you're filling the tank and some fuel spills over the edge, it goes into a hole, which comes out there on the bottom. There should be a hose that comes down and rests somewhere in the front of the swing arm.

The second and third pics I am really not sure about. I have a Clymer manual...I'll see if it mentions anything in there.