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    1990 OMC 5.7 Fuel Pump

    My fuel pump has gone south on my 1990 OMC 350 Being a GM 350 at heart, I was wondering if you can use a generic mechanical GM 350 fuel pump or do you have to pay the $150+ to put a factory one back on? Does anybody have experience with this or tried it before?
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    Boat suddenly dies on water

    Going across the water at about 75 percent throttle, I hit a decent wave and the engine shuts off instantly. I still have power to the dash but the engine shut off. I turn the key and it starts up instantly and I go about my business thinking maybe it was a fluke or something. ABout 30...
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    Engine RPMS drop by half when going into reverse

    Sometimes when I put the boat in reverse, the engine rpm's drop by half and the engine stumbles. If i take it out of reverse and put it back in, sometimes the problem repeats and sometimes it works perfect. When the engine does stumble, the drive is in gear, there is no noise, grinding, or...
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    Maiden Voyage....FINALLY!!!

    I have a 1991 Four Winns Horizon (22'-23') with an OMC 350 and Cobra drive. It has taken me 6 months but I finally got everything (shifter cable, gaskets, carb, distributor, etc) replaced or working, minus the interior, and took it out on the lake this past weekend. The lake was CHOPPY with...
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    need to replace outdrive oil?

    Re: need to replace outdrive oil? here you go, this shoul dbe better. its for a 1990 model cobra, but removal should be almost identical I would think.
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    OMC Tripple Guard Substitite?

    Is there a substitute grease that you can use instead of the suggested OMC T.G. (Triple Guard)? In the manual that I have, OMC T.G. is listed everywhere as the grease of choice, but I was wondering if I could use White Lithium grease instead? If not, is there another grease that can be used...
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    Installing Outdrive

    When installing the complete outdrive back onto a cobra sterndrive, is the allignment tool a must have to allign the gimball bearing and the engine coupler? I dont have one, but I wouldnt think its that big of a deal considering I havent installed a new gimball bearing and everything should...
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    Shift Rod Assembly in Lower Gear Housing

    After recently acquiring a 1990 Four Winns that has been sitting for a LOOOOONG time, I tore into it to make sure everything was good before taking it to the lake. I removed the Cobra Drive from the boat to make sure the shifter cable was adjusted properly and to grease the u-joints and shaft...
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    Coolant hose issue

    Coolant Hose from Water Pump to Thermostat Housing Part#: 0914807 Mine is degraded and I can't seem to find a replacement anywhere. They are listed as obsolete and out of stock everywhere I have checked and there doesnt appear to be a direct replacement. Is the coolant hose something I can...
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    Issues with Outdrive.

    Thanks to the help of everybody here, the engine is now running great. However, the outdrive is acting up so hopefully Yall can help me. Ihave read through the service manuals, and cant seem to find anything so here goes. 1990 OMC 350 574APRPWS Back History: Prior owner installed an...
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    Carb Issue

    Holley 4175 I rebuilt the carb and the engine is running as smoothe as a sewing machine. However, I cant get the idle to stay down, it hovers around 1100 rpms. I adjusted the idle screw one way and the idle increased, so i turned the screw the other way and the idle went back down but never...
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    Got it running, couple questions, VIDEO included

    Note: Video link is attached to bottom. A better picture (before carb rebuild), by request lol. I finally got around to rebuilding the Carbs. My father stopped by to help out and it was great fun, havent worked on auto/machines with him in a long time so it brought us down memory lane a...
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    Holley overflow hose

    I can't find a hollow overflow hose/tube anywhere. Does anybody know what material or type it is, or where I can find a replacement one?
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    Gear Ratio

    I have an 1990 OMC 5.7 and I am trying to determine the gear drive. I have found one document stating its 1.40:1 but I havent found anything else to validate that information. Does anybody know?
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    90 OMC 350 questions

    I recently purchased a 1991 Fourwinns with an OMC 350 engine. After pulling the numbers on the engine, the engine comes back as a 1990 5.7 L OMC. Model and Serial: 574APRPWS , T01192508 I went to the BRP parts catalog and cant seem to match up some of the part numbers from there with the...
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