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  1. #1
    Predator-x's Avatar
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    01 GPR Primer Kit install, rejetting needed?

    Last summer i had rebuild my 01-GPR carbs, so i removed the stock air-box en installed aftermarket FA´s.
    I rejetted the carbs to :
    110 Pilot jets, 120 main jets,1.5 Needle and Seat, 95 gram spring (Dull Silver).
    Now i want to install a primer kit because the ski is a pain to start when i didn´t use it for a few day´s.
    Is rejetting really needed ,because the carbs are tuned and have new gaskets ,rejetting means i have to go trough the horror of
    tuning the carbs again.


  2. #2
    Smokes's Avatar
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    Hey X, i dont think you have to rejet for the primer kit just for the arrestors and sounds like you already did that so you proly good but as for the specs on the jetting i will wait for a member more in the the know to chime in.

  3. #3
    Predator-x's Avatar
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    I´m close by jetting specs , only the main jet has to be changed to 125 .
    I was wondering if it makes a huge difference when i keep using the slightly lower main jet.

  4. #4

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    Just start out with your high speed screws turned out an extra turn or turn and a half until you are sure you are not lean on top instead of jetting up. If you are not using outerwears( water socks), adding them will accomplish pretty much the same thing and save you from jetting up to 125.
    But, if you are already satisfied with the current setup, adding a primer will not change a thing as far as jetting is concerned, the above was about addressing the difference of choke plates in/ versus choke plates out. If you already are good with them out, you may be good.

  5. #5
    Predator-x's Avatar
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    Chokes are still intact, by using a primer kit chokes have to been removed.
    So adding outerwears restrict the airflow and probably saves me from rejetting right?

  6. #6
    mudslanger's Avatar
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    The primer does not change the fuel air mixture. it just pumps a small amount of fuel into carb to assist in starting the ski. holding throttle fully open and choking the engine wile starting works good too.
    the socks on the flame arrestors shouldn't change the air flow enough to have to rejet the carbs. unless the high speed screws are turned out the max settings.
    If you are 1.5 turns out on the hi and the engine is a little lean then you would need to jet up.

  7. #7
    Predator-x's Avatar
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    Thanks, gonna try that

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