1969 Evinrude 115hp V4 2 stroke carb tuning

[Camaro-95]

I am in need of tuning my carbs on my 115hp evinrude
There are 4 adjustment needle screws on the front of the carbs that adjust the air/fuel mixture ratio.
Can anyone give me any advise on tuning it to run at its best? It seems to idle low so I'm not sure if I need to screw them in more or out farther.. I don't want to run it to lean however. Please let me know.

 

[boobie]

Re: 1969 Evinrude 115hp V4 2 stroke carb tuning

Those needles are for idle only. Check the top secret files at the beginning of this forum. Joe Reeves has a good write up.

 

[Camaro-95]

Re: 1969 Evinrude 115hp V4 2 stroke carb tuning

That is interesting, by adjusting those needles was the difference between my motor running and not. Before I could only get it to idle kind of through the water and would not have any acceleration power once I gave it throttle... but as soon as I adjusted those needles and got it to start up better, I had my power when putting throttle into it.

 

[boobie]

Re: 1969 Evinrude 115hp V4 2 stroke carb tuning

That's why the needles are there on that model.