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  1. Thread: SLT 780

    by K447
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    44

    Welcome. Click here, start reading :) ...

    Welcome.

    Click here, start reading :)

    http://polarispwcknowledge.shorturl.com/first-things-to-do
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    I cannot speak about outboard motors and AGM...

    I cannot speak about outboard motors and AGM batteries, but I have been using high quality AGM batteries with PWC for years. 2-stroke and 4-stroke, carb and fuel injected.

    My preferred battery is...
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    The L shaped fitting can be sourced from some...

    The L shaped fitting can be sourced from some outboard motors with Ficht, IIRC.

    The T shaped connector, much harder to find.
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    Solenoid delete, be sure to cap off the fitting...

    Solenoid delete, be sure to cap off the fitting at the exhaust manifold.

    Ficht Fuel Pressure regulator reinforcement, there is a detailed thread with photos. Links and more details can be found...
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    I am not familiar with that particular model but...

    I am not familiar with that particular model but the problem description suggests the electrical grounds be cleaned and checked. Not just (both of, and both ends of) the battery cables, but also the...
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    PWC do have different regulatory requirements....

    PWC do have different regulatory requirements. There are several specific exemptions from Coast Guard requirements, listed right on a hull sticker.

    PWC also have several restrictions that differ...
  7. This link should be useful. Direct/Remote...

    This link should be useful.

    Direct/Remote control switch for Yamaha electric fuel pump

    http://greenhulk.net/forums/attachment.php?attachmentid=442309&d=1543102409

    Metal connection to Yamaha...
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    I think you may be correct. I will point out...

    I think you may be correct.

    I will point out that those 'white' plastic fuel hose connectors for the injectors tend to become brittle with age. Be very careful not to bend or break them as they...
  9. Moisture inside electrical gear is never a good...

    Moisture inside electrical gear is never a good thing, salt or fresh.

    In addition to the actual buttons, sometimes moisture gets inside the wire harness connectors for the handlebar controls....
  10. SCU = RiDE motor unit ...

    SCU = RiDE motor unit

    I think the SCU acronyn comes from Yamaha land vehicles, and the watercraft guys just re-used the ECU to SCU link and terminology.

    Some of the handlebar buttons use...
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    Welcome. First off, click the link below....

    Welcome.

    First off, click the link below. There is a lot of useful info in there. Spend some time reading up, not just about the Ficht fuel injection system your engine has, but also all the other...
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    2-Stroke I am not intendng to disuade you (or anyone) from...

    I am not intendng to disuade you (or anyone) from their own project watercraft).

    GP1800 are available used. Mine are from 2017, first model year. Sure, one must verify the condition and mechanical...
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    I would expect all modern large watercraft when...

    I would expect all modern large watercraft when hull flooded to float stern down, bow high. The weight of the engine is towards the rear while the fuel tank is in the front.

    As the hull floods the...
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    70 mph (GPS) is a lot for the 2015+ hull with...

    70 mph (GPS) is a lot for the 2015+ hull with non-supercharged engine.

    The most straightforward method would be to sell the VXR and buy the SVHO supercharged GP1800. Same hull as VXR, more power....
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    Charge the battery, then disconnect the charger. ...

    Charge the battery, then disconnect the charger.
    Let it sit overnight.

    Connect a digital multimeter to the battery terminals.
    Note the resting battery voltage.

    Start engine. Watch...
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    2-Stroke Where are you getting this from? The Yamaha...

    Where are you getting this from?

    The Yamaha SVHO supercharger has no regular or recommended rebuild interval. Nor the clutch for the SVHO supercharger. Depending on the riding/water conditions and...
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    Welcome. I do not have the measurement info,...

    Welcome.

    I do not have the measurement info, but IIRC the Yamaha engine is mounted at a slight downward angle (towards the rear) in the Waverunner. So the spacing between crank shaft centerline...
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    Link says price is over $330. Which is close...

    Link says price is over $330.

    Which is close to the cost of CANDooPro product.

    CANDooPro is well known, well supported, and well regarded.
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    Lift the trailer weight off the tires while in...

    Lift the trailer weight off the tires while in storage, so there is a small air gap underneath. Similar to long term RV storage.

    For most people this is too much trouble or not easily done. Which...
  20. Welcome. What exactly is failing? The engine...

    Welcome.

    What exactly is failing? The engine mount hardware itself or the hull attachment points for the mounts?
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    Tires are happiest when they are used frequently....

    Tires are happiest when they are used frequently. Left parked for long time periods does the tire no favors.

    Note: If a trailer tire is getting close to seven years old then it has reached end of...
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    I presume you checked that all the wheel nuts are...

    I presume you checked that all the wheel nuts are tight and there is no mechanical problem with the axle, the wheel bearings, etc.
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    How long was it stored before you towed it? ...

    How long was it stored before you towed it?

    How far distance and at what speed did you tow?

    What air temperature was it during the tow?

    What maximum air pressure is specified on the tire...
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    It may be possible to request a modified tune...

    It may be possible to request a modified tune that adjusts the learner mode to a different power/RPM level, appropriate for the rental use.
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    I doubt you could add enough to change the...

    I doubt you could add enough to change the outcome.

    Once there is enough water inside the hull to flood the engine (and thereby prevent the hull from being powered forward and staying on plane),...
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