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    The Yamaha boats have hoses with remote zerk...

    The Yamaha boats have hoses with remote zerk fittings. To prevent over-greasing and damaging the seals, it is recommended to only pump grease until you see the hose start to flex. The OEM hose is a...
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    A carburetor should be clean inside, but many are...

    A carburetor should be clean inside, but many are not. If ethanol, water, or dirt get in, you may see corrosion in the form of rusted screws, sticky needle valves, corrosion on flapper valves, and...
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    Yes, you'll need that gasket. Aftermarket is OK...

    Yes, you'll need that gasket. Aftermarket is OK on that.
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    I thought I might be able to help you, but I...

    I thought I might be able to help you, but I can't. I have a junk 650 engine that has an intake manifold similar to the one in your photo, but according to the parts manual, the bolt pattern on the...
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    Have you tried Ebay? There have been a lot of...

    Have you tried Ebay? There have been a lot of people that have done upgrades over the years, there must be a lot of them out there sitting in junk piles.
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    Three big problems with rebuilding carbs: Most...

    Three big problems with rebuilding carbs: Most of the aftermarket parts kits don't meet the OEM specs and you end up with improper fuel metering. People that don't have a clue what they're doing...
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    I'd recommend that you look into the Triple...

    I'd recommend that you look into the Triple Pisser Mod, as well as adding a cooling water strainer.

    I use the Groco WSB 500 strainers with 1/2" fittings. I ordered a couple of the OEM pisser...
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    It sounds like the carbs are plugged up with gum...

    It sounds like the carbs are plugged up with gum or damaged from ethanol fuel. This can result in a lean condition which can burn up your engine! Could also be a plugged fuel filter, plugged fuel...
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    Welcome aboard, twist! NO! That is a fuel...

    Welcome aboard, twist!

    NO! That is a fuel injected engine, the fuel is injected into the cylinders (except for the one hose going to the crankcase. If you look at the intake manifold, you'll see...
  10. In stock form, the Ultra 150 has no up trim, only...

    In stock form, the Ultra 150 has no up trim, only neutral through down. I made a new cable mounting bracket for mine that gives neutral through up. It handles MUCH better. Others have done the...
  11. Welcome aboard, ghostlili! I've had a couple...

    Welcome aboard, ghostlili!

    I've had a couple of ZXis and had fun spinning them. The 150 is a completely different machine. Yes, you can spin it at speeds up to about 35 MPH if you modify the...
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    I believe the Wiseco pistons are forged, which...

    I believe the Wiseco pistons are forged, which may require more cylinder clearance. Verify that before ordering. Otherwise, I'd probably use WSM.

    I don't like Wiseco gasket sets at all. I use...
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    I'll be near Thomas & 56th. The fitting on...

    I'll be near Thomas & 56th.

    The fitting on the carb sounds suspicious. You could also use an inline valve from a 2-stroke Yamaha. I've never had to split the case on my 150, either. I did my...
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    222 hours on it without a rebuild? Do it now! ...

    222 hours on it without a rebuild? Do it now! Or at least at the end of this season. It's a LOT easier and a LOT cheaper to rebuild one BEFORE it self-destructs.

    That said, carefully inspect...
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    I'm going to be in Scottsdale next week. I'm...

    I'm going to be in Scottsdale next week. I'm planning to be quite busy, but I might have time for a quick visit if you need some help. I tried to send you a Private Message, but it wouldn't accept...
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    JetSkis don't like paper filters.

    JetSkis don't like paper filters.
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    That really doesn't look too bad. You might be...

    That really doesn't look too bad. You might be able to re-use that cylinder. I can't tell if it has any scoring, I mostly see aluminum buildup which can be removed with muriatic acid. (BE CAREFUL...
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    Mesh filter or paper?

    Mesh filter or paper?
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    My nephew just placed an order and was told...

    My nephew just placed an order and was told April--maybe.
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    The fuel filter should be about half full when...

    The fuel filter should be about half full when running. It should be mounted above the carbs. If it's laying in the hull, it will probably fill up all the way. It should be mounted high to prevent...
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    It takes a while for new plugs to turn brown. ...

    It takes a while for new plugs to turn brown. That's why I asked how long you've been running them.
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    Those same O-rings will fit the needle valve...

    Those same O-rings will fit the needle valve seats. You should change them, too.

    You may also have a fuel tank venting issue, or a fuel filter problem, or perhaps a fuel pump problem.
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    I use brass fittings from McMaster-Carr on stuff...

    I use brass fittings from McMaster-Carr on stuff like that.
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    Pretty sure I bought it from Ebay. The...

    Pretty sure I bought it from Ebay. The replacement hose I ordered came from U.S. Plastics.
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    How long have you been running those spark plugs?

    How long have you been running those spark plugs?
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