Classic 50, 45 hp Mercury spark plug recomendation

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Olds Eddie

Petty Officer 2nd Class
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Jan 30, 2005
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My brothers motorized dock has an 1989 classic 50 on it. He dosen't have a manual and I need to know what are the best spark plugs for this engine?
 
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Olds Eddie

Petty Officer 2nd Class
Joined
Jan 30, 2005
Messages
194
Re: Classic 50, 45 hp Mercury spark plug recomendation

Thanks for the reply. Do you happen to know the part # ? He keeps it at the lake and and it's a 1.5 hr drive to get there. I had her running good till he let one of his scuba instructors borrow it. He says it is smoking and won't idle so I figure someone got the oil mix a little heavy.
 
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