This is probably covered already but I could not find it through a search. The 2010 I purchased a couple months ago turned out to be a CA model with the evaporative canister and separator. I removed all that stuff so I could use the underseat space for a mini compressor. I have everything removed and all the lines capped or plugged but I wasn’t sure what to do with the fuel tank breather port. I assume I need to leave it open but don’t know if I need to route it down to the bottom of the bike somewhere or just vent to under the seat? It does not reference these ports in the SM for non-CA models.

From those with non-CA models what does yours have. By the way, it is the inside port (blue) of the 2 ports on the right side. Thanks in advance.

The tank vent should go to somewhere at the bottom of the bike. I don't think you'd like fumes or (gasp) gas loose right under your buns....

Mad

Thanks Madd, that's what I was thinking but wasn't sure what stock non-CA set up was as that hose was only mentioned for tank removal if you had the CA model.

When sitting on bike, look down, seat off.

Left tube fitting = That's when you overfill/rain/washing the bike, the tank gas cap has an outside vent to send the excess out of the [outside] part of the neck dry so when you pop the cap, no water goes in after a washing say.

Right tube fitting = This middle tube goes up to #3 cylinder and is used as a vacuum line to pump the canister clean if overfilled, etc from the...

... Far right tube = The splash over tube goes into the canister at one end, is filtered thru a charcoal filtering system, #3 or the middle hose is going to pump the gas/liquid vapor into the canister, and be sucked out via the canister hose heading to #4 cylinder to go dump the excess/vapor into the cylinder.

Which brings us to 5 openings:

1. Lt Vent = Open to ground or leave it alone: it's the stock hose down on the left side of the bike - No need to address this vent.

2. Mid Vent = Run open. This is air.

3 Rt Vent = Run open. This is a liquid vent so this is going to need attention down to the ground or up the side of the back seat rail so it's away from the engine and if overfilled, hard braking at a topped off tank, this gas is going to run out that vent and onto the engine/mufflers. Address this hose accordingly.

4. #3 throttle body nipple = Close off.

5. #4 throttle body nipple = Close off.

Hub,

I had things a little different on the 5 openings:

1. Lt Vent = Open to ground or leave it alone: it's the stock hose down on the left side of the bike - No need to address this vent. Check

2. Mid Vent = Run open. This is air. This is the port they call the fuel tank Breather vent which I assumed kept the tank from overpressurizing. I have this open but with a hose run to bottom of bike.

3 Rt Vent = Run open. This is a liquid vent so this is going to need attention down to the ground or up the side of the back seat rail so it's away from the engine and if overfilled, hard braking at a topped off tank, this gas is going to run out that vent and onto the engine/mufflers. Address this hose accordingly. I capped this port off completely with the intent to keep any liquid from spilling out at all.

4. #3 throttle body nipple = Close off. Check

5. #4 throttle body nipple = Close off. Check

So what you are saying is I can just leave the mid vent open into the underseat area?

I'm tempted to just combine both ports on the right side into one line that runs down below/ just rear of the engine. But what I really want is to have someone with a stock non-CA model to tell me/show me what theirs looks like and I'll do the exact same.

builder, You did good. Less hose to crack if you tee'd off the second vent, so just capping off one works too. I have a 2 vent 48 state tank. During the hot days, the gas cap would whistle as if you placed thin paper or plastic across your lips as a reed and she sings all day long once she releases and builds up again. Expect that to come so don't worry.

If I recall; open the gas cap; blow in the vent tube; stick your finger over the little vent hole [follow the black pointed rubber nipple] down as you close the gas cap and you'll see that hole that makes the gas cap sing. So the other tank vent next to is open in the tank.

This makes the gas tank a closed loop system. Captures the vapor from the tank (one vent tube) and captures overflow at the gas pump (second vent tube).

Oh didn't realize the factory used two different tanks for CA and non CA models. Just figured all tanks has 3 ports and they just plugged one up on 48 state model.