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  1. #1
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    Whatever vacuum hose question

    Started putting my 1300R back together. Put the gas tank on and had a little trouble with the vent hose on the back of the tank. Got it on and followed it to make sure I didn't put a kink in it somewhere. Got down to where the battery box is and noticed a tee in the line and nothing connected to the branch. I looked it up here: https://www.bikebandit.com/houseofmot...5703#sch417506 and did not see that it went anywhere. It's numbers 6, 11, 31 Does it connect to something? If not, does anyone know why it's there? Tks in advance.
    Last edited by Snodad101; 04-01-2012 at 01:05 PM.

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    It's just a vent line and in the worse case, an overflow.

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    Even the CA models don't have a tee in that vent line. I think someone may have added it to get more length. I don't see a problem with it being there.

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  6. #4
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    Don't plug it - it needs to be left open and nothing connects to it.

    Donut/Doug
    Make sure you put the vac hose back on the petcock or it wont start.

    Donut/Doug

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    Doug, why would there be a tee in the fuel tank vent line? Neither the CA or Non-CA models show a tee on the hose drawings that I've seen.

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    Quote Originally Posted by blackdot View Post
    Doug, why would there be a tee in the fuel tank vent line? Neither the CA or Non-CA models show a tee on the hose drawings that I've seen.
    It's to keep the tank from siphoning out and also lets air into the tank when you use it up. Air has to get in somewhere. Also it is designed to let any over fill to drain down to the bottom of the bike and another thing you would not want to be getting the air for the tank at the end of the hose down by the ground and from the dirt being thrown at it from the front wheel.
    Hope I explaines this right. lol

    Donut Doug

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    Quote Originally Posted by Donut View Post
    It's to keep the tank from siphoning out and also lets air into the tank when you use it up. Air has to get in somewhere. Also it is designed to let any over fill to drain down to the bottom of the bike and another thing you would not want to be getting the air for the tank at the end of the hose down by the ground and from the dirt being thrown at it from the front wheel.
    Hope I explaines this right. lol

    Donut Doug
    Yes, you explanation is fine Doug thanks. But are you saying all tank vents have this tee, because I don't think mine does.

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    Quote Originally Posted by blackdot View Post
    Yes, you explanation is fine Doug thanks. But are you saying all tank vents have this tee, because I don't think mine does.
    It has to in order for air to come in. The tube connects under the right rear of the tank. Looking at the pdf there is no change from year to year and by the state's (california) -all are the same for the tank.

    Doug

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    Mine has a T

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    Quote Originally Posted by Donut View Post
    It has to in order for air to come in. The tube connects under the right rear of the tank. Looking at the pdf there is no change from year to year and by the state's (california) -all are the same for the tank.

    Doug
    Thanks Doug, mine probably has the tee as well but I cannot confirm because the bike is in AZ.

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