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  1. #1
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    Jul 2017
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    Louisiana
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    New Phoenix hotfoot not adjusted right 721xp

    New fourstroke motor supposed to run up to 6200 rpm, I’m only turning a 25fury 5750 and a 24 fury 5609, so I said the only thing left as I heard there is some reports of hotfoot not adjusted properly coming from Phoenix, so I turned my screw in a 1/2” and immediately gained 200 rpm with the 24 fury, my question is does it need to be put on a computer to adjust or can I just turn the screw all the way down then push the pedal all the way down and back the screw out?

  2. Member
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    Nov 2012
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    Nederland, Tx
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    #2
    Take it to the dealer. They can plug it in and see if your getting 100%

  3. RIP Evinrude 1907-2020 JR19's Avatar
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    Feb 2005
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    Columbia, KY
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    #3
    I am not familiar with the new four stroke motor from Mercury but I do know on my older Evinrude there was a TPS sensor (throttle position sensor). It had to be set to match with the actual position of the throttle. A tech sets the throttle linkage so it achieves 100% full throttle. Then the TPS sensor is set to recognize the position of 100%. If my memory is correct in the event it reaches 105% or more throttle a check engine alarm will sound. I think my new Evinrude is also the same way. How I learned this on my old motor. I was by trying to gain rpm...I adjusted my hotfoot for more travel but got a check engine alarm. When I took it to the dealer they hooked my engine to a computer and told me my TPS sensor detected overtravel. I told them what I had done. They set the screw back on the hotfoot so the TPS sensor was in alignment with true 100% throttle and I never had an alarm again...long story short you might be able to adjust the screw a little but if you get a check engine alarm you probably need to have a tech set TPS sensor to coincide with the hotfoot linkage. Again this is for an older Evinrude. I don't even know if the new Mercury's have a TPS sensor.

  4. Member
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    Jul 2017
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    Louisiana
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    871
    #4
    Quote Originally Posted by JR19 View Post
    I am not familiar with the new four stroke motor from Mercury but I do know on my older Evinrude there was a TPS sensor (throttle position sensor). It had to be set to match with the actual position of the throttle. A tech sets the throttle linkage so it achieves 100% full throttle. Then the TPS sensor is set to recognize the position of 100%. If my memory is correct in the event it reaches 105% or more throttle a check engine alarm will sound. I think my new Evinrude is also the same way. How I learned this on my old motor. I was by trying to gain rpm...I adjusted my hotfoot for more travel but got a check engine alarm. When I took it to the dealer they hooked my engine to a computer and told me my TPS sensor detected overtravel. I told them what I had done. They set the screw back on the hotfoot so the TPS sensor was in alignment with true 100% throttle and I never had an alarm again...long story short you might be able to adjust the screw a little but if you get a check engine alarm you probably need to have a tech set TPS sensor to coincide with the hotfoot linkage. Again this is for an older Evinrude. I don't even know if the new Mercury's have a TPS sensor.
    I just dropped the boat off at Mercury dealer and told him everything I explained on here he basically said he will hook it to the computer and make sure it is reading 100% throttle and adjust accordingly

  5. RIP Evinrude 1907-2020 JR19's Avatar
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    Feb 2005
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    #5
    good deal