Mercury 18 Hp hard to start cold

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    farmboy71


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    #211703

    I have a 1983 18hp Mercury that is hard to start first time in the morning. The rest of the day it starts first pull. I have changed the plugs and cleaned out the carb. Any ideas on why it won’t start easy after sitting overnight. My 1958 Mercury Mark 10 starts second pull after sitting.

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    jeff-register


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    #211705

    I had problems with my 63 200 too until I replaced the choke butterfly. It wasn’t seating on the carb opening correctly.

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