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  1. #1
    darkov's Avatar
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    spx 720 - 1999 engine removal & reinstaling

    i am from montenegro , europe , and im trying to remove engine of my spx 720 from the hull because there is too much rust everywhere and it need to be cleaned and repainted and also i want to change grey tempo lines because its starting to lose power under load when in water .....
    having some serious problems uncsrewing the bolts holding the carburetors on the last photo , any suggestion should i heat them with a torch or what ?
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  2. #2
    Ziggy's Avatar
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    If you can reach, try putting the tip of a heavy-duty soldering iron down in the bottom of the socket of the screws. This can be effective, and far less likely to zorch your carbs. Hold the iron in each screw for a while and be patient. Take them one at a time. Good luck!

  3. #3
    Petron's Avatar
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    Quote Originally Posted by darkov View Post
    having some serious problems uncsrewing the bolts holding the carburetors on the last photo , any suggestion should i heat them with a torch or what ?
    It's hard to tell from the photo, are the allen bolt heads all busted up? or you can't actually get an allen into it because it's awkward?

    I had a busted up allen bolt, what I did was stick my allen into it & then I tack welded it (if you have access to a welder), then it unscrewed very easily.

  4. #4
    Mark22's Avatar
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    Is the screw just really hard to turn or you can't turn it at all? It in kind of a bad spot, but normally for sticky bolts I would recommend WD40, PB Blaster or if neither are availible, acetone. They use blue loctite (242) on pretty much everything in a Seadoo. That coupled with a little rust equals a bolt that may never come lose! Acetone might dissovle the loctite. I like the soldering iron idea. Seems much safer than open flames near gas lines. When you do get it out, you might think about cleaning up the threads in the hole with a tap. That'll make it easier for you to get the bolt back in.

  5. #5
    dghal's Avatar
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    just put a heat gun on the outside edge of the carb body,, those screws gum up inside there,, when it pops loose work it back and forth taking it out,, Patience is the key,, good luck

  6. #6
    Will the engine not come out with the carbs on? Can you remove the RV cover with the engine still in the hull? Either of these may make the removal of those stuck bolt easier.

    The heads look pretty healthy, are you trying to remove with standard "L" allen wrenches? If so, get yourself some allen-sockets. Avoid the cheap ones and any with a ball end.

    My brother and I cut a hole in the carb body and prayed penetrating oil into the "sleeve" that the bolt goes through. That made it easier but it was still a PITA.

  7. #7
    Why do you need to remove the carbs? prolly time to clean them up anyways

    Just unhook the throttle and choke. Choke bar is held in with 2 very little allen set screws then it can slide out.

    At most tip the motor towards the exhaust. It should clear the hull

  8. #8
    darkov's Avatar
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    Quote Originally Posted by hardtarge View Post
    Why do you need to remove the carbs? prolly time to clean them up anyways

    Just unhook the throttle and choke. Choke bar is held in with 2 very little allen set screws then it can slide out.

    At most tip the motor towards the exhaust. It should clear the hull
    yes i will do that , thank you for the tip , i already got moving 3 of 4 bolts their heads are good but it seems to me that too much oxidation and salt water is formed a lock on the thread ....... i am proceeding slowly
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  9. #9
    You will probably find that the part that is stuck is not where the bolt goes into the threaded hole but the bolt stuck in the carb. If you can remove 3 of the 4 the you can unscrew the entire carb from the RV cover. Then your challenge is pressing the bolt out of the carb.

    This is why I don't install carbs without anti-seize on the shoulders of those bolts.

  10. #10
    darkov's Avatar
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    i have removed 4 motor mounts ( 1 of them is gone i need replacement - dond quite know where to find it though ) and i tryed to remove the engine from hull with caruretors still on , since i cant quite remove them , but it doesent come of the turbine shaft , do i have to tilt engine forward/ backward or somehing , here the progres today in photos
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