Question about 1982 Yamaha XZ 550

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I purchased a new gas tank for my '82 yamaha vision 550. the replacement tank is from an '83 and there seems to be 3 inlets on the '83 tank(fuel or vaccum) and 2 on the '82 tank i'm replacing. Just wondering what can be done here?

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  • jjjakins Apr 19, 2009

    No i thought of that but the bored holes are different distances apart from the one tank to the other. Was hoping one inlet on the petcock was a vaccum that could be blocked off and not needed on the '82?

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The 83 has a fuel return line intended to prevent vapor lock , by circulating cooler gas through he fuel pump. You can cap off the fuel return hose and it will cause no problems. The carbs on the 82 differ quite a bit from the 83 and the petcocks are not interchangeable, with out a lot of work.

Posted on Apr 23, 2009

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Can you swap the petcock from one tank to the other?

Posted on Apr 19, 2009

  • Brian Hildebrandt Apr 20, 2009

    i would hook it up the same way the old one was and leave the extra outlet alone and see what happens when you start it up. put your finger over the hole and see if it is drawing vacum. sometime the extra hole is not used.

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