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Type: Posts; User: K447

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  1. As you have already realized, there are safety...

    As you have already realized, there are safety issues when altering the fuel pump control.

    If you search back far enough there are several threads and discussions regarding alternatives to using...
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    These engines require a really strong battery. ...

    These engines require a really strong battery.

    Weak, intermittent or missing spark are often caused by a battery that is not quite strong enough.

    Measure the voltage at the battery posts while...
  3. These are what you used, correct? ...

    These are what you used, correct?

    http://greenhulk.net/forums/attachment.php?attachmentid=478967&stc=1
  4. Check that you have the firing order correct. ...

    Check that you have the firing order correct.

    Use the single cylinder at a time test. I have posted the test method details elsewhere on here.

    Get the MAG cylinder by itself to fire and start...
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    Did you install the Riva ride plate without the...

    Did you install the Riva ride plate without the Gen 2 Riva intake grate?
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    I will suggest checking the J-tube hose clamps...

    I will suggest checking the J-tube hose clamps first. Much easier than pulling the air intake apart to get at the supercharger wheel.

    Just had a 2021 GP1800R SVHO here a week ago. He lost boost...
  7. Have you already ordered the new supercharger...

    Have you already ordered the new supercharger clutch and related update kit?

    If not, you might find it worthwhile to order from the GH Performance store. You can include the tool in the order.
  8. This online vendor lists it for $10....

    This online vendor lists it for $10.
    https://www.impellers.com/shop.html#!/Polaris-Tigershark-Impeller-wrench-tool-19-2005-650-700-750-780-900-1050cc/p/73485897

    I have never used them, and no...
  9. Impros lists the tool for $14US....

    Impros lists the tool for $14US.
    https://impros.com/store/polaris-impeller-spline-tool-wr006.html

    If the Impros shipping cost is similar, that is probably as good a total cost as you will find.
    ...
  10. Yamaha recommends the SVHO engine factory fill...

    Yamaha recommends the SVHO engine factory fill oil be changed after ten running hours from new.
    Then every 50 running hours or seasonally.

    I do not know about Seadoo specifically but it seems...
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    Sticky: Yamaha GP1800 SVHO Long Term Storage winterization process

    Bumping this up for the 2021 Yamaha winterization season.

    Yamaha GP1800 SVHO Long Term Storage winterization process


    If you do get on the water during the colder months, you can re-winterize...
  12. Boost air pressure is not the only factor that...

    Boost air pressure is not the only factor that increases with speed on the water. The raw water feed from the jet pump increases in pressure as you ride faster with higher engine RPM. That raw water...
  13. So the dash reading is completely inaccurate with...

    So the dash reading is completely inaccurate with the incorrect impeller installed.

    Engine RPM combined with GPS readings for actual speed are what matters when doing diagnostics.

    Even with...
  14. Why wait to change the oil? Is there warranty...

    Why wait to change the oil?

    Is there warranty coverage that you want to retain intact?

    A dealer approved and recorded oil change ‘now’ might ‘save’ your warranty coverage.
  15. All depends on how experienced the person is and...

    All depends on how experienced the person is and whether you encounter any problems.
    And have all the necessary tools at hand.
    And you don’t forget about something or somehow put it back together...
  16. What size deep socket did you use to make the...

    What size deep socket did you use to make the tool?

    Noted that it is a six point socket, good choice!
  17. Salt water exposure? How much time had it been...

    Salt water exposure?

    How much time had it been in salt water when the bolt broke?
  18. This is the SHO engine, correct? 3,000 RPM...

    This is the SHO engine, correct?

    3,000 RPM sounds low but 5,000 RPM is about right for an engine that has lost boost pressure. The supercharger clutch (especially if the clutch is original) may be...
  19. Thread: YONG WANG

    by K447
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    There are other threads from previous members...

    There are other threads from previous members asking about their Yong Wang watercraft. You may find some useful info in those old threads.

    You can use the GH built-in search function or this...
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    Welcome. Green Hulk has been posting YouTube...

    Welcome.

    Green Hulk has been posting YouTube videos and how-to articles on here for the SVHO engine. Look for the Greenhulk Garage channel.

    Riva has an excellent tune library and flexible tune...
  21. Thread: YONG WANG

    by K447
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    Reverse light? I am not familiar with the...

    Reverse light?

    I am not familiar with the Polaris copy you have but are you sure that ‘reverse light’ is not an ‘error’ indicator?

    A genuine Polaris would limit engine RPM to about 3500 when...
  22. Did you actually clean all the carb internals and...

    Did you actually clean all the carb internals and small passages?

    Did you re-use the old parts or install carb rebuild kits?

    If you installed carb rebuild kits, which source/brand?
  23. You made me double check! The tube of sealant...

    You made me double check!

    The tube of sealant shown in the photo is 3M 4200 Fast Cure.

    I do use Right Stuff gasket sealer around the intake grate bolt holes (just a thin bead) but around the...
  24. View Post

    There is quite a span between ‘reliable’ and ‘windowed’.
  25. 2-3 hours, being careful. Should take less...

    2-3 hours, being careful.

    Should take less time once you have done it a couple of times and have all the tools at hand and know what to expect.
    ...
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