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    1997 150 EFI Tach setting

    I have a 1997 150 EFI. The tach is a quicksilver and has 4 settings 1-4. Which setting should it be??
  2. L

    Tach settings???

    I have a 1997 150 Mercury EFI on a 20ft center console.. The prop is a 21 laser. A blade on the prop cracked and left me looking for a new prop.. Everyone I talked to said a 21 pitch prop was too much pitch... and asked me what kinda of RPMs it was turning, It was turning 5800.. So with the RPMs...
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