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    FS - Parts Ultra 150 R&D Aquavein scoop grate

    For sale ultra 150 aquavein, good condition. 120 dollars. Based in UK but will post to US. Currently unsure of postage costs.
  2. Just a quick update on this old thread for anyone...

    Just a quick update on this old thread for anyone else having trouble with vibration or knocking, finally pulled the through hull bearing off and it was seized solid, completely shot but visually...
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    I stored the ski fairly level this time to be...

    I stored the ski fairly level this time to be honest but definitely something to watch, hadn't thought of that!
    FL_Rider, I haven't had chance to check in the cylinders and cases yet. Long story but...
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    Yes sorry the fuel chamber, it was full to...

    Yes sorry the fuel chamber, it was full to bursting with neat oil from the line and seemed to be a bit more in the reed cage than the other two as well. There's also quite a bit underneath the engine...
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    Well I'm stumped now, spent some time in the...

    Well I'm stumped now, spent some time in the garage tonight with the pop off gauge and apparently now all three check valves are holding 3.5psi before popping off. Seemingly working fine.
    Does...
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    Thanks for all the replies, got a lot of good...

    Thanks for all the replies, got a lot of good information. Hopefully can get it sorted now.
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    Okay, and it flows uninterrupted down the throat...

    Okay, and it flows uninterrupted down the throat of the carb, past the CV slide and through the reed valves and is sufficient to lubricate top end etc??
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    With that method I was thinking less about oil...

    With that method I was thinking less about oil seepage with the engine off and more about the engine not getting oil on start up? How long does it take for oil to reach the motor?? I'll take a look...
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    Definitely happy on using any method as long as...

    Definitely happy on using any method as long as it works and doesn't cook the engine that I spent more than the ski is worth on! Haha
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    Have you had success using this method Steve? I...

    Have you had success using this method Steve? I don't have the carbs Infront of me at the moment but it seems like the engine would be running on neat fuel upon startup until the oil had trickled...
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    Thanks Steve I was struggling to find them...

    Thanks Steve I was struggling to find them online! Is it possible to drill out the existing valves in the carbs so I'm relying solely on the Yamaha ones? Seems crazy to be gambling on whether the...
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    Thanks Steve! I'll try and source some. I think...

    Thanks Steve! I'll try and source some. I think only one, maybe two of the carb check valves are stuck, so will it affect anything if I put these valves in all three of the oil lines? Or is it best...
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    Ultra 150 carb check valves help please.

    Could anybody tell me the correct way to install inline check valves on the ultra 150 oil lines to the carbs, I believe Yamaha use this method on the GP1200 but I'm unsure as have never seen inside...
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    Ultra 150 TPS Sensor

    Afternoon all,

    Could anybody tell me the correct way to check and adjust the TPS sensor on an Ultra150/STXR please? I did some research, thought I knew how to do It, Got my multimeter out and...
  15. You'll find the needle valve on the other side of...

    You'll find the needle valve on the other side of the carb, underneath a rectangle plate with 4 screws holding them on. Remove the plate and inspect the diaphragm under there for rips etc, there's a...
  16. They are the slide diaphragms, they open under...

    They are the slide diaphragms, they open under vacuum to lift the needle that is attached to it underneath, letting in fuel. They look to have been glued in place, which isn't necessarily a bad thing...
  17. Apologies if this has been discussed already, but...

    Apologies if this has been discussed already, but going back to your original pictures, one of the flame arrestor adapters on top of the carbs looks to be on the wrong way round (far left on the...
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    Thanks, that's what I thought but had a bit of...

    Thanks, that's what I thought but had a bit of conflicting information. Nice one for confirming!
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    Bump, nobody?

    Bump, nobody?
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    Ultra 150 CDCV pilot screws

    Sorry to drag up an old subject but Iíve been getting conflicting advice recently from multiple trusted sources.
    Can anyone tell me for definite whether the pilot screws on the CDCV carbs relate to...
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    Thanks Steve I'll check my PM's! I've...

    Thanks Steve I'll check my PM's! I've miscalculated on the O rings somehow, They're £2 each I've just checked, I'd seen them on Ebay i think for £3.50.
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    Well I'm at my wits end with these carbs. I can't...

    Well I'm at my wits end with these carbs. I can't find the correct O rings for the fuel rails and seats anywhere, 7mm x 1mm are too small, 7mm x 1.5mm are too big. The ones that came with the Junk...
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    Managed to test the valves using a step down on...

    Managed to test the valves using a step down on the pop off gauge, looks like two are working and 1 is stuck open, fingers crossed I can free it up. Tried the vac on the diaphrams as well, they all...
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    Thanks for the replies! I’ll give the shop vac a...

    Thanks for the replies! I’ll give the shop vac a go raven, hadn’t thought of that! Steve45, I’m hoping a few go’s in the ultra sonic bath might free the check valves but if all else fails I’d love to...
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    Ultra 150 carb help please

    Afternoon all!
    Could anybody help me with a couple of issues I'm having with my ultra carbs please? I can't quite find the info that I need when searching. The ski is running really quite flat off...
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