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  1. #91
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Those are not the correct jets for Mikuni Super BN carbs.

    Genuine Mikuni jets would be best, but the SBT may work.

    As long as you have a nice idle and it accelerates fine, the low speed jets should be fine.

  2. #92

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    Check. Would you go up to a 112.5 or 115 or more? Or can't I really know until I test them? It idles fine, but I do have that stutter in the acceleration sometimes...


  3. #93
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    If I remember correctly, 1 full turn OUT on the hi speed screw is about 1 jet size bigger. That should compensate for next size up. If you're going to buy them, I'd go 2 sizes up.

    But before you do that, what does your piston wash say?

  4. #94

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    It's hard to see in the spark plug hole, but it doesn't look too dark. Granted I haven't run it much. Turning the screws helped a lot, and I ordered some jets just in case, but it's much better. I think I'm going to use it and just keep an eye on that third cylinder. THANK YOU everyone so much for your help on this thread, and my sincere apologies it went so long.

  5. #95
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Get yourself a small, flexible LED flash light that fits through the spark plug hole. Use the engine coupler to turn the crank by hand and place the piston you want to view at Bottom Dead center. You can then put the light through the plug hole and easily view your piston wash. This is a great way to monitor how your engine is doing.

    TIP: It helps a lot by placing a towel over your head while trying to view the wash. The darker you make it above the engine, the easier it is to see in the plug hole.

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