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    Repowering with small mercury outboard

    Hello All, I am looking for advice on mounting a new 2015 mercury 40hp in place of a 1979 140hp inline six First a little back ground, the boat is a 1979 Larson fiberglass open bow runabout, The boat is only used for trolling for trout in the eastern sierras. The existing motor runs fine, but...
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    Using carb cleaner in your fuel mix

    Ok, saw a video on youtube showing a guy using carb cleaner in his fuel mix to cleanout his carbs. http://www.youtube.com/watch?v=rtvKZyxbVdg Won't this remove some of the lubicating property of the 2 cycle oil?
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    Rejetting/new prop for 7400' elevation.

    Hello All, I have purchaced a new, old boat. 17 foot 1979 Larson Manta with a 1979 L6 Mercury 140 First, I tried it out at sea level ran around the local coast line other the cool starting everthing was great. Next a trip up to Big Bear Lake (elev 6750) VERY hard to start won't low idle...
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    Need to rejet old boat... I think....

    Hello All, I have purchaced a new, old boat. 17 foot 1997 Larson Manta with a 1997 L6 Mercury 140 First, I tried it out at sea level ran around the local coast line other the cool starting everthing was great. Next a trip up to Big Bear Lake (elev 6750) VERY hard to start won't low idle under...
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    Fixed orfice idle jet- Small orfice = leaner mixture??

    Ok, I am rejetting my 1986 40hp to run a 7200 ft elevation. Dealer said to install 36M idel jet. OK, jets arrived today and on inspection the hole in the 36M idle jet is smaller hole than the standard #40 So how does the smaller hole in the 36M idle jet make the idle mixture leaner? I would...
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    Re-jetting 1986 40HP for 7200ft elevation

    Does any one have the chart to re-jet the carbs on a 1986 40HP Johnson for a lake at 7200 foot elevation? Thank you for any assistance you can provide.:D
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