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  1. 10-08-2018, 02:44 PM #1
    ggodwin
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    2003 225 EFI (Tachometer stopped)

    Good afternoon Mercury fans!
    I just purchased my first Mercury motor. During the first fishing trip the tachometer stopped working.

    The first time I took the boat out I thought the motor was spinning too fast or the tach was not reading correctly. It's a 20 foot skeeter with a 25 temptest prop. Either the prop is too small or the tach was not accurate. It was ripping past 5500 RPM like crazy. So the tach may have been off?

    I am not familiar with these motors. What is the first couple items I should check?
    Last edited by ggodwin; 10-08-2018 at 02:50 PM.
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  2. Savage
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    #2 10-08-2018, 08:04 PM
    RPM's need verified with a electronic tach.


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  3. transdep1
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    #3 10-09-2018, 11:18 AM
    Take the tach out,look on the back and you will see a small dial, make a note on what number its on. now turn it back and forth a couple of times. Put it back on the number it was on. Now try it again.
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  4. EuropeanAM
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    #4 10-09-2018, 01:03 PM
    If you would, please take a moment to review the Announcements at the top of the Forum, and provide the Required Info for your post.

    Thanks!


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  5. ggodwin
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    #5 10-09-2018, 08:18 PM
    I do not trust the accuracy of the tach, but it is working. There is a main power switch for the gauges. I just assumed it would be on the key.
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