FX1 Pump Question
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  1. #1
    PWCToday Regular b00st's Avatar
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    FX1 Pump Question

    Do any other Yamaha skis share the same pump as the FX-1's 122mm pump?
    I've been searching and cannot find anything. I hear some yamaha's have a 122mm pump but they are not the same as the FX-1.
    I am trying to find an FX-1 122mm pump ...
    Thanks a lot.
    '85 JS550/750: Small pin/Dual carb (Finished 6-7-18)[BUILD THREAD]
    '91 300SX: 38bn carb, Westcoast flame arrester, 650 head gasket

  2. #2
    Top Dog TMali's Avatar
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    Re: FX1 Pump Question

    The FX1 pump is a one off pump. Its a 122mm straight wear ring where other sit down models used a 122 tapered wear ring and impeller. I still have some FX1 pump parts if your looking for something.

  3. #3
    PWCToday Regular b00st's Avatar
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    Re: FX1 Pump Question

    Quote Originally Posted by TMali View Post
    Its a 122mm straight wear ring where other sit down models used a 122 tapered wear ring and impeller.
    So comparing the two, is there any performance difference between the sit-down and fx1 pump? I assume there has to be some sort of performance gain for the fx1 since you said it has a straight wear ring.
    Also thanks for the info.
    '85 JS550/750: Small pin/Dual carb (Finished 6-7-18)[BUILD THREAD]
    '91 300SX: 38bn carb, Westcoast flame arrester, 650 head gasket

  4. #4
    PWCToday Guru
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    Re: FX1 Pump Question

    I’m going to be getting rid of my pump this winter! It’s in good condition. But I won’t be pulling it out till the winter

  5. #5
    PWCToday Regular b00st's Avatar
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    Re: FX1 Pump Question

    Quote Originally Posted by rysta23 View Post
    I’m going to be getting rid of my pump this winter! It’s in good condition. But I won’t be pulling it out till the winter
    I did a 750 swap in my js550 and didn't use the 750 pump (750ssxi) if you possibly want to trade for that. I think I read here that it's one of the kawi pumps you guys put in the fx1's? But just like you I haven't removed it yet since I only pulled the engine for the swap. It does work though I rode it for a few hours before the swap
    '85 JS550/750: Small pin/Dual carb (Finished 6-7-18)[BUILD THREAD]
    '91 300SX: 38bn carb, Westcoast flame arrester, 650 head gasket

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