2000 25hp johnson 2cyl need help with carb adjustments

jaxsadie

Cadet
Joined
Aug 9, 2010
Messages
6
Let me start with outboards are new to me, I also dont have a manual yet. My question is about tuning this motor. From what I understand this carb has only a low speed needle that you adjust. I Had this motor worked on and it ran good for about 10 gallons. Now the motor has a rough idle and has a rough low and mid range, but a flawless high speed. At high speed it runs like a top. I was told that a new power pack was put on I think thats what they said. new plugs, new water sep. filter, new fuel lines and bulb. If this is anything like my small 2cyl engines maybe it is a bit rich on the low end, what do you guys think? oh yeah the fuel is 50/1. Thanks for all your help!
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: 2000 25hp johnson 2cyl need help with carb adjustments

I think that if it ran good through 10 gallons of gas, and no adjustments have been changed, maybe a piece of trash has found its way to the carb.
Just thinkin.
 
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