Reply To: ’57 Evinrude 7.5 fleetwin fuel mix

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February 7, 2020 at 10:07 am #194182
aquasonic
Participant

    At that time, the 3, 5.5, and 7.5 HP OMC motors all were recommended to use 16:1 mix. The 10 HP and up were recommended to use 24:1 mix.

    The smaller motors were plain bearing. The larger motors had needle bearings on the crank.

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