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  1. #1

    Siphoning old gas from a 2015 Yamaha FZS

    What is the best way to remove the old gas from the tank of my FZS? I tried pushing a siphon tube down the filler neck but it seems to not make it into the gas. Is there a restriction at the tank or a smaller hole that my tube will not pass through? Thanks for any replies! Bill

  2. #2
    BLASTER 1's Avatar
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    I use 3/8 clear hose with a brass barbed fitting to keep it on the bottom works good
    Sometimes you have to twist the hose to get it past the plastic tank inlet
    Also make sure the container your siphoning into is lower then you tank

  3. #3
    For me, its been easier to disconnect the black hose from the tank inlet and insert your line directly in the tank. I also use an outboard primer to get the flow started, then gravity will do the work. Use Barb weight to prevent it from floating in the tank

  4. #4
    mittens's Avatar
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    can twist and also if you pull the front white panel, you can squize the rubber inlet hose and the hose you using will pop over the tank lip, and then push into bottom of tank.


  5. #5
    Success!! Thanks everyone...I had just about given up trying to get a siphon line down the filler tube. There must be some large lip or small entry into tank. I finally got a 1/4" tube into tank and was a slow go siphoning the gas but I got 15 gallons out. Now with new spark plugs I do hope that the old gas and old spark plugs was the cause of the problem! Also the same day that I had the problem with the ski, I found that one of the 6' runner boards on the trailer was rotted and broken in half! So I have that to take care of too!

  6. #6
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by fzsbill View Post
    Ö one of the 6' runner boards on the trailer was rotted and broken in half!
    So I have that to take care of too!
    Was the other bunk board also replaced?

  7. #7
    anton74's Avatar
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    So now what do you have planned for that aged gas?

    I'd probably dilute it with some premium first, and then add it to an old v8 pickup. Burn it that way.

  8. #8
    mittens's Avatar
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    Weed killer along fence,. hahaha.

  9. #9
    My wife wants it for fire ants!! I may slip some into her riding mower....shh...don't tell her! I put metal braces under the board so I could at least get it home and plan to replace them this weekend. Like I say I do hope it was the gas...pulled one plug and the first few threads are mighty black.

  10. #10
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