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3hp mercury Needs help

hooktooth

New member
I just bought a used outboard

I just bought a used outboard ser# oA869338 -I would like to know what year it is and what gas?oil mix. .I c
checked compression ~110lbs and changed the spark and cleaned the carb .New gas and she fired right up . After 2 days of puttering around while fishing it died -Turned out to be a fouled plug . \After changing it I got another 2 days before it fouled again . Seems to be a trend. Any ideas as to what I should look at next? Thanks
 
"0G574241 and below use a #92

"0G574241 and below use a #92 main get. Above uses a #80. Somebody could have taken the carb off of anything. BPR6HS-10 is the right plug. Use NGK only in Merc's, unless otherwise instructed to do so in the manual. There are differances in the carb setup based in CDI or Magneto ign."
 
"Hi Howard, your motor is a 19

"Hi Howard, your motor is a 1991 US-made model. As posted by Bandit, the first 'o' in the serial is a zero.

GL!"
 
Thanks for all the help. I&#39

Thanks for all the help. I'll post back any success stories after I have a chance to tinker with it
 
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