Idle Screw setting 98' Johnson 50 hp

warmweather

Cadet
Joined
Jul 22, 2011
Messages
6
I am looking for the recommended starting point for tuning the idle on a 98' 50hp Johnson. It has 2 carbs and I was going to begin at 1-1/2 turns out. (idle screws)
I thought I would save time by first visiting this site.

Additionally, does turning the screw in or clockwise lean the mixture and outward richen the mixture.

Respectfully,
JC
 

fmalott

Chief Petty Officer
Joined
Jun 28, 2010
Messages
561
Re: Idle Screw setting 98' Johnson 50 hp

that's a good place to start and yes to your lean and rich
 

warmweather

Cadet
Joined
Jul 22, 2011
Messages
6
Re: Idle Screw setting 98' Johnson 50 hp

Thanks for the quick reply. I just rebuilt them and am ready to give it a try. Great Site!
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,758
Re: Idle Screw setting 98' Johnson 50 hp

Just to clarify -- the screws you mention are "idle mixture". There is also and "idle speed" screw.
 
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