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  1. Replies
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    Similar story for me in 2013, but I had already...

    Similar story for me in 2013, but I had already switched mostly to Deka AGM by then. Except for one used PWC thatcame with a good battery so I didn’t replace the battery right away. Which failed...
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    Yes, a given make and model battery has a...

    Yes, a given make and model battery has a specific optimal float voltage (narrow voltage range) and that is affected by temperature. The manufacturer provides that info.

    Several models of...
  3. Welcome. It seems that the electrical system...

    Welcome.

    It seems that the electrical system was not in factory configuration before you began to replace the Start/Stop switch.

    My guess is that there was one or more short circuits...
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    Link to the Yuasa recommendations for their GYZ...

    Link to the Yuasa recommendations for their GYZ and/or YTZ battery (AGM battery) charging specifics?

    I can find (basic) info on the Yuasa chargers but not the specs for charging specific Yuasa AGM...
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    Correction (system will not let me edit the...

    Correction (system will not let me edit the orginal post)

    Should read;

    At room temperature for their AGM batteries East-Penn recommends (page 11) charge voltage 14.3-14.6 volts and float...
  6. Check cylinder compression. Throttle wide open,...

    Check cylinder compression. Throttle wide open, all spark plugs out.

    Any time the engine is not running well and it is 'forced' to contiunue to run at wide open throttle there is risk of (lean...
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    Moments of this sort is why battery quality,...

    Moments of this sort is why battery quality, battery maintenance and battery age matters.

    http://greenhulk.net/forums/showthread.php?t=290288&p=3105019&viewfull=1#post3105019
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    Or maybe the other way around ;)

    Or maybe the other way around ;)
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    Rusting/corrosion of the exhaust valves and valve...

    Rusting/corrosion of the exhaust valves and valve stems was a real problem for an older generation of 4-Tec engines.

    There is liquid water in the exhaust waterbox, and that can create moisture...
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    We sometimes carry them both. Which is better...

    We sometimes carry them both. Which is better depends on the situation.

    The Cooper is an excellent anchor for PWC. We keep ours inside a canvas storage bag along with the anchor rope and rode....
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    My understanding is that the seat base section is...

    My understanding is that the seat base section is now removable. With the seat lifted and the seat base unbolted there is more engine access that the pre-2021 model.
    ...
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    I find the Deltran provided info to be a...

    I find the Deltran provided info to be a combination of specifics and unclear details. Why are the owners manual PDF not provided on the web site? :|
    ...
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    Apparently Deltran says that model is AGM...

    Apparently Deltran says that model is AGM compatible.

    https://www.deltran-global.com/compare?items=5548,5570
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    Among the reasons I post about batteries,...

    Among the reasons I post about batteries, charging and maintaining is that a battery failure on the water can be dangerous. Unlike on land where one can get off and walk home a PWC non-start or other...
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    WTB - Parts OK, but you should also add your location to your...

    OK, but you should also add your location to your profile. Top right corner of web site, click My Profile.
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    I will agree that poor quality and/or non-AGM...

    I will agree that poor quality and/or non-AGM appropriate chargers will degrade AGM battery life.

    Odyssey has a slightly unusual chemistry, different from the Deka AGM. My understanding is the...
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    Yes. If the battery is currently healthy and...

    Yes.

    If the battery is currently healthy and well charged.

    A battery that is near end of life should not be kept in the ski. In fact, it should be removed and never put back in. Buy a new...
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    WTB - Parts View Post

    5.5 inches.
    They are for a non-extended ‘short’ jet pump.

    Turns out I also have four of those short bolts.
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    Well, how deep are the deepest gouges into the...

    Well, how deep are the deepest gouges into the surface?

    It is hard to tell from those photos, but it looks like the gouges just need to be filled with epoxy filler and smoothed out.

    I have...
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    View Post

    Riva’s listings and names for tunes are not entirely consistent.

    In this Riva web list there are no Plus tunes for the FX, only for the GP1800.
    https://rivaracing.com/tunelibrary

    The canonical...
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    FS - Parts View Post

    Do not do this!

    Do not send money ‘as a friend’ unless the person actually is a friend. Just because they have an account on some online forum does not make them trustworthy for something...
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    The second shop did not actually inspect/diagnose...

    The second shop did not actually inspect/diagnose the machine, correct?
  23. Have you looked at the Yamaha EXR?

    Have you looked at the Yamaha EXR?
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    What series would you be racing the EXR in?

    What series would you be racing the EXR in?
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    How did you do your compression check? Did you...

    How did you do your compression check?
    Did you put any oil into the spark plug holes?
    Throttle held wide open while cranking the engine?

    Engine knock and low compression are mechanical...
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