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  1. 89 js550 bogging out at wide open

    I have a bone stock 89 js550 with fresh motor will start right up run for while then bogg out at wide open then will not start tried everything carb pop off pressure is 10psi rev limiter is gone with restrictor turned needles every which way. It did over heat on the stand a little without water trying to tune still have 130 psi in each cylinder same as before it over heated.Been working on dirtbikes for 10 years jetskis are new have no idea what else to do
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  2. dess button broken

    Quote Originally Posted by mjrepo View Post
    When I connect dess button it doesn't make any beeping noise and not gauges work.
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  3. Jetting instructions for dual 38mm BN carbs mounted on a reed valve engine.

    Note: These instructions have been modified for bn 38mm round body carbs on a reed engine.
    It assumes you have the correct impeller for your particular set-up. Read the entire thread if you
    do not understand




    Idle drop test
    (1) Perform the idle drop test on a trailer. Set the low screw set to a rich setting. For example:
    1 turns out, and warm up the engine (Sam you may need a leaner initial setting between 1
    and 1 1/4 turns ...

    Updated 08-15-2014 at 06:29 AM by wmazz

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  4. 650 sn swap to a 61x 701

    Hi I'm trying to figure out all the things I'll need to do to swap my 1990 650 square nose superjet to the 61x 701 motor. Like do electronics work and all the ignition parts work. Just trying to find a list of things I will need to change
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  5. 96 seadoo xp-not running correctly,please help,thanks

    I have a 96 seadoo xp. According to the guy i bought it from, it sat for 5 years. I got the ski running however, it will only run for about 15-20 seconds then it will die. It does not matter wether the ski is idleing or you have the throttle open. After it dies, it will fire right back up and then die again within 15-20 seconds. ( bare in mind that i am starting the ski by shorting across the solenoid). Im at a loss however as to what to do next. It leads me to believe that that it may be something ...
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