1986 20hp Mariner rough idle and service manual

Pajj1764

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Jul 10, 2013
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I am having trouble with a 20hp Mariner that I just picked up. At low speeds it runs rough and stalls out, at high speed it runs fine. I have installed a new fuel line, tank, fuel filter and cleaned the carb. I an looking for any additional hints that people might have.

Another question is there is a small harness with a plug coming off the rectifier it appears that this could be used to charge a battery, if this is so, does anyone have a part number for the other half of the two pin plug?

Windy seems to have a ton of answers, hope he reads this I am also a retired 1st class PO.

Thanks for any help.
 
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