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    As a test, you can disconnect the factory airbox...

    As a test, you can disconnect the factory airbox from the engine and do a comparison test ride, with no air filter at all.

    I suspect you will not find much improvement.

    That said, IIRC if the...
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    This has been covered many times. You can...

    This has been covered many times.

    You can select a tune from the Riva MaptunerX library that limits max RPM to 8000, thereby avoiding any ECU logging of ‘excessive’ RPM above that level.

    I...
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    Which EMM repair service was it sent to? ...

    Which EMM repair service was it sent to?

    Ignition timing is always referenced to the number one cylinder, at the front of the engine. AKA the magneto (Mag) cylinder.

    Ficht engines are...
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    Not vapor lock, per se, but perhaps an air leak...

    Not vapor lock, per se, but perhaps an air leak into the fuel system. The entire fuel system is under suction from fuel tank to fuel pump.

    An air leak at the water separator, or the fuel selector...
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    Welcome. I would suspect the EMM needs repair....

    Welcome.

    I would suspect the EMM needs repair.

    There are some additional diagnostics you can do before sending the EMM out for repair, but I would not be surprised if the EMM has failed.
    ...
  6. Thread: Worx ride plate

    by K447
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    I have posted about my GP1800 and the Worx...

    I have posted about my GP1800 and the Worx extended ride plate. Search for my username and Word, should find the posts.

    In my case I had the Worx ride plate modified with Jim’s cut. This improved...
  7. When it is working properly the Ficht system...

    When it is working properly the Ficht system delivers a very strong spark. Weak spark is not normal.

    22 volts with one injector unplugged and engine cranking is also weak. I would be expecting...
  8. Thread: Changing bunks

    by K447
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    Any photos or tips for the next guy?

    Any photos or tips for the next guy?
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    Do you have the tools to remove the old impeller?

    Do you have the tools to remove the old impeller?
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    If the thermostat and/or adjacent pressure bypass...

    If the thermostat and/or adjacent pressure bypass valve is stuck open that can reduce water pressure to the EMM.

    In the MSX 140 video I posted the engine was fully warmed up so the thermostat...
  11. Thread: SL 1050 limp mode

    by K447
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    Also, check the rim seal for the electrical box....

    Also, check the rim seal for the electrical box. Is it damaged or missing?
  12. Thread: SL 1050 limp mode

    by K447
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    Check both sides of the terminal board for...

    Check both sides of the terminal board for corrosion. Disconnect battery first, of course.

    ’447 is an updated Gen III CDI. The thin black wire to the battery should be disconnected. Then confirm...
  13. You can rev the engine on trailer, even right up...

    You can rev the engine on trailer, even right up to redline. I wouldn’t hold it against the rev limiter, but touching the rev limiter for a second or two at a time is not a huge worry.

    The...
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    You can use a small magnet (does not need to be a...

    You can use a small magnet (does not need to be a super strong magnet) to test the red carb engine Hall Effect sensors. This can be done with any generation of stator, 2 or 3 cylinder versions.
    ...
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    Perhaps you could contact a Impros and ask them...

    Perhaps you could contact a Impros and ask them what they would recommend?

    They may be able to repitch a ‘standard’ impeller from their inventory and ship it to you.

    They may also know whether...
  16. View Post

    When you find some PFD that meet your ‘floats face up’ requirements please post them here so others can know which they are.
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    I tried Bearing Buddies on my previous Triton...

    I tried Bearing Buddies on my previous Triton with EZ-Lube weep hole. The grease quickly oozed out the weep hole as soon as enough grease was pumped in to pressurize the bearing buddy spring.
    ...
  18. We have a couple of the JetPilot Apex (model...

    We have a couple of the JetPilot Apex (model V475) PFD. These have a thicker (higher buoyancy) front pad, which tends to float you face up in the water (the back pad is not as thick, allowing the...
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    Which grease system does the axle (zerk fitting)...

    Which grease system does the axle (zerk fitting) have?
    Where does the ‘old’ grease exit when fresh grease is pumped in?

    Some torsion axles dump the old grease out the back side of the swing arm...
  20. We all have our moments ;)

    We all have our moments ;)
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    Well, you might want to ask what the watercraft...

    Well, you might want to ask what the watercraft should do, and what it actually does (in regards to the ‘problem) and then we will know what is not working.

    I have no idea what that phrase ‘trim...
  22. What range was your meter set to for AC volts? I...

    What range was your meter set to for AC volts? I would be expecting readings in the many volts ranges, not fractional numbers under 1.00 volts AC.

    Or the meter probes were not making solid contact...
  23. Welcome. The 1992-1993 Polaris Fuji cooling...

    Welcome.

    The 1992-1993 Polaris Fuji cooling system was unusual. Hopefully someone who knows exactly how to retrofit a 1994 engine into the older model will answer.

    I seem to recall the pre-1994...
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    View Post

    What ‘swivel clip’ are you using currently?

    I use stainless steel snap hooks on my GP1800 rear tow hoop and have not noticed much paint damage, if any.
    ...
  25. Thread: SL 1050 limp mode

    by K447
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    When the original Gen I ignition on the 1996-1999...

    When the original Gen I ignition on the 1996-1999 red carb engines begins to fail it can ‘seem’ like an intentional RPM limiting mode. Your comment that it sometimes runs well and sometimes poorly...
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