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  1. 03-24-2020, 08:59 PM #1
    P.H.D
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    Mercury V8 250 Pro XS rpms??

    Serial # 2B738321
    Just a quick question, what are guys seeing there dealers set there W.O.T at?? I see these motors say 5600 to 6200 in the specs, that's a wide range.. Why would it vary so much? Maybe I just read it wrong, Thanks.....
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  2. fishnfireman
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    #2 03-24-2020, 09:33 PM
    The throttle needs to be set at 100%

    The rpms will be detrmined by Prop type and pitch vs boat setup.. Seems the V8 needs to be very close to max rpms at optimum WOT.
    Last edited by fishnfireman; 03-24-2020 at 09:38 PM.
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  3. P.H.D
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    #3 03-24-2020, 10:30 PM
    Ok that makes sense.. Thank you..
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  4. fishnfireman
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    #4 03-25-2020, 07:58 AM
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  5. EuropeanAM
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    #5 03-25-2020, 04:00 PM
    I recommend that once the throttle is confirmed to be reaching 100%, the engine be propped to achieve 6050-6200 @ WOT.


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  6. P.H.D
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    #6 03-25-2020, 07:07 PM
    Thank you Don..
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  7. Brently13
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    #7 03-31-2020, 09:48 AM
    I had a bad throttle cable on my Merc 4 250, was only getting 5800 rpm because there was slip at the motor end connector.
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