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  1. #1

    Are cylinder jugs interchangeable?

    I posted this in another thread, but thought it warranted it's own. I did a quick search, didn't come up with anything that answered my specific question, which is:

    Does anyone know if the pistons & cylinders are interchangeable? For example, can I take a cylinder that was used on one WaveRunner in the #1 position (closest to the flywheel), can I use that on another engine in the #3 cylinder/piston position?

    I noticed that the cylinder jugs appear to be numbered Y-1, Y-2, & Y-3 on my 1200XLT. They look similar, but I am guessing that they are probably different in some way. But, when I look at sites to order parts, they all appear to have the same part number.

  2. #2
    icky002's Avatar
    Join Date
    Oct 2008
    Where do you see them numbered on your xlt?

    Yes, they are all the same and interchangeable. You may have to change around the powervalve linkages, exhauset manifold posts (on #2 cyl), but the cylinders are the same part.

  3. #3
    I took off my #3 last fall after the piston blew, so it was in a different place. I noticed my #1 and #2 had written Y-1 and Y-2 respectively on the sides. Just assumed that #3 was Y-3; not so. It is also Y-1. Here are some pics. Sorry that they're blurry, hard to get up close to see the numbering without getting blurry.

    Cylinder #1 (closest to front of engine) (Y-1)
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    Cylinder #2 (Y-2)
    Click image for larger version. 

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    Cylinder #3 (closest to rear) (Y-1 again)
    Click image for larger version. 

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  4. #4
    Crash Test Dummy Smitty's Avatar
    Join Date
    Jun 2006
    Cullman, AL
    Your cylinder positions are interchangeable, but like icky said you will have to change the powervalve setup to work. Pistons, however, are matched to certain cylinders. There is a chart in the service manual telling you what piston is needed for each cylinder. This is an important piece of info when you are ordering new pistons.

  5. #5
    Thanks for the info Smitty. I would assume that if I purchased a used set of a cylinder with the matching piston, I would be good. So, if it came off an engine where they were in the #1 position and I put them in the #3 position as a set, I'm good, right?

  6. #6
    Crash Test Dummy Smitty's Avatar
    Join Date
    Jun 2006
    Cullman, AL
    Correct. A cylinder jug is a cylinder jug.

  7. #7

    Join Date
    Jul 2010
    Omaha, NE
    The cyls are marked with their size on the top... And the correct piston is red, orange, green, or purple based on that size? (Manual page 5-30)

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