Johnson 115hp Carb Setting

[ALLUPINIT2]

Does anyone know the initial low speed needle setting on a 2002 Johnson 115 hp 2-stroke engine?

My engine Starts Great, Idles Great, Runs Great; my problem is in the transition from low speed to high. It sound ,feels like it drops a cylinder before taking off on all 4 cylinders.

This all started when I was trying to lean it out a bit.

 

[rockyrude]

Re: Johnson 115hp Carb Setting

Typical starting point for idle/low speed jets is 1 to 1-1/2 turns out from a LIGHTLY seated stop. You also need to adjust them with the motor in the water. Using muffs does not create the needed back pressure to set them correctly.

 

[seahorse5]

Re: Johnson 115hp Carb Setting

On your 115, the starting point is about 5 turns out. It will sometimes be as high as 6 turns at times.

Be sure the linkage synchronization is correct and that the spark advance starts at the same time the throttles start to open.

Use a service manual or a trained tech to get the adjustments correct.