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  1. #1

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    Mikuni fuel pump check valve diameter

    So we were rebuilding the last carb for our GPR. I picked up extra fuel pump nipples (cuz we all know how much they suck) and extra check valve disks. I noticed the ones I picked up are about 1mm smaller diameter than the ones that came in the kit. The appear to seal correctly and such. But I'm wondering if these will affect the performance of the ski?

    Any help is greatly appreciated

  2. #2
    raiderteen's Avatar
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    I'm fairly confident the check valves for SBN I-Body carbs (Power Valve motor carbs) are larger diameter than the regular SBN carbs (earlier non-PV motor carbs).

  3. #3

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    Quote Originally Posted by raiderteen View Post
    I'm fairly confident the check valves for SBN I-Body carbs (Power Valve motor carbs) are larger diameter than the regular SBN carbs (earlier non-PV motor carbs).
    I’m just wondering if I ordered the wrong ones?
    I’ll have to double check what I bought.


  4. #4

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    So I called Watercraft Superstore tech line the other day. They said I ordered the right ones, they’re just a tad smaller than stock but they use them all the time without issues.

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