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  1. #1

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    1993 Polaris 750 SL fuel wiring

    I somewhat inherited a 750SL and 650SL. They have been stored for nearly 10 years and I am currently rebuilding the 750 first as it needs less work. I am replacing the fuel lines, fuel pump, fuel filter and rebuilding the carbs. I have taken compression readings and PTO was abit low at 100-105 psi and the centre and mag was 120psi. I would hope it would change possibly once I get the carbs done and gas tank and fuel lines replaced and fired up since it was stored for a number of years. The 750 SL never came with a fuel tanks and my question is I found to wires that are connect to a harness at the front of the PWC and not sure if its for a fuel sending unit or something. I know some fuel tanks are different. My 650 SL has no fuel sending unit and wondering if the 750 had a different tank with one in it. Any direction would be greatly appreciated.


  2. #2
    BlueFishCrisis's Avatar
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    First verify the year of the boats by check the last two digits of the Hull ID number. This will be the year.

    If the 750 is a 93, it had a ball float style fuel level sender which connected via a black and pink wire to the ebox in the rear. The fuel pickup consisted of two lengths of fuel hose (one shorter as the std pickup, one longer for the reserve pickup) internal to the tank with a brass "clunk" fitting on the end to keep it at the bottom.

  3. #3

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    Yes I did verify the years of the PWC. Thanks for the response, I had a feeling that is what the fuel tank design consisted of just wasn't 100% certain. Time to start looking for one.
    Thanks Again.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by BlueFishCrisis View Post
    ... If the 750 is a 1993 ....
    Can he use a fuel tank (and level sender) from any other model years, or other models?

  5. #5

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    I was just trying to research that. Some other years like 1992 have the same fuel tank minus the hole cut out for the fuel Level sender. I would assume you could cut a hole and install the fuel level sender unit.

  6. #6
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    Quote Originally Posted by lemmer18 View Post
    I was just trying to research that. Some other years like 1992 have the same fuel tank minus the hole cut out for the fuel Level sender. I would assume you could cut a hole and install the fuel level sender unit.
    It would probably be easier to just swap out the tank with one that has the mounting for the sender

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by lemmer18 View Post
    ... The 750 SL never came with a fuel tank ...
    So he is hunting for one or two fuel tanks?

  8. #8

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    My 650 has a tank already but needs major work. I was going to take the tank out of the 650 possibly and cut a hole to install the sender and the tank into my 750. Than at a later date purchase a 650 fuel tank .

  9. #9
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    Its not worth the risk cutting a hole into a tank to install a sender. There are threaded inserts molded into the tank for the sender to bolt into. A used tank can be found for very cheap and is a much safer alternative.

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by BryanP View Post
    ... A used tank can be found for very cheap and is a much safer alternative.
    Agree.

    Also look to replace the original fuel filler neck and cap, if they are still present. The originals (now twenty+ years old) can be prone to hairline cracks and poor sealing.

    You can use the newer design with minimal modifications.

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