Re: 85 hp fuel pumps, carb questions.

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August 28, 2017 at 9:27 pm #63964
amuller
Participant

    Thanks. The high speed jets came out nicely after I ground an old screwdriver to fit. They are marked 57C, part number from marineengine.com is:
    "0317021 – Orifice Plug, 57C." Apparently this means a bore of 0.057" Does the part number change with size?

    So you would suggest going up .002" in size? Seems reasonable, if only because of the lower-density ethanol fraction in current fuels. How do I do get those jets?

    The idle jets really don’t want to come out, and I’m inclined to leave them for fear of shearing off the ears.