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    4.3 OMC Cobra Overheating at times

    I have a 1991 Four Winns 200 Horizon 21 foot ski boat. I have owned it since new. It is in MINT condition, almost NO ISSUES in 30 years, especially engine related. Has a Chevrolet 4.3 Cobra. Now, recently, and this weekend I was able to do more testing in the lake, I am getting an overheating...
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    Water Separator or also Fuel Filter Information

    Ok, I posted the much discussed fuel condensation in the fuel tank at the end of the season. So, now I am very interested in exactly WHAT the Water Separator actually does. Here is why I ask. I have owned my Four Winns 200 Horizon with a 4.3 Cobra for 22 years. I have been the mechanic on...
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    Winterizing double check question on Alpha 1 350 with 5.7 Mercruiser

    Good day! Brother in law just bought a 1997 Sea Ray 210 with Alpha 1 350 engine and 5.7 Mercruiser outdrive. I have been nominated to help him winterize. I am a 1991 Four Winns OMC experience guy so it is different. Here is what I did and is it correct? I read a lot of threads, trust me! Thanks...
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    Syphoning gas from 1991 Four Winns 200 Horizon

    Hello. I have a 1991 Four Winns 200 Horizon with a 4.3 Cobra engine. I am winterizing it and get conflicting opinions on the fuel. One tech says fill the tank with gas and stablilizer. The company that services my 650 Holly carb says absolutely not. He says store boat with NO fuel or as little...
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    Water and Tiny Filings in lower unit of 1991 4.3 Cobra

    Thank you for reading. I have a 1991 Four Winns 4.3 Cobra and just changed the lower unit grease mid-season to be safe. It is a 64 Ounce fill. When I had filled it before, I put in 64 ounces as well. I noticed after filling I DID NOT use the synthetic I usually use so after one hour on muffs and...
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    How to replace lower unit grease on 1991 OMC Cobra 4.3

    Ok, I was jsut hoping for a quick reply. I noticed a guy a few threads down replaced the lower unit grease on his 4.3 Cobra and toasted his drive. He referred to draining it from the bottom and filling it from the bottom and it failed in five minutes. According to my book, there are THREE...
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    1991 Four Winns 4.3 Cobra overheat and now stern drive noise

    Overheating and now stern drive chattering on 4.3 cobra stern drive I have a 1991 Four Winns 200 Horizon with a 4.3 Cobra and Cobra stern drive. I am the original owner and the boat is MINT and has NEVER had engine or drive issues other than a lower shift cable. So, problem is last week at the...
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