My 93 150 Johnson GLETR is running great after preventative maint and a few adjustments. It sat for 1.5 years before I got it but spark, compression, fuel, vro, lines, etc are all good now. I was reading through the service manual about the carbs just to familiarize myself and the carb installation procedures say to tighten the idle, intermediate, and high speed screws but mention nothing about possibly adjusting these. I don't have it apart, I was just reading about this.
I have no reason to believe they are off, but it does idle a little high I think and I have had a high speed surge before, but that was fixed by decarb and replacing a leaking fuel hose I believe.
As an effort to optimize performance, should these screws be tightened down or should they be carefully adjusted. I have no idea how the last guy had this set up. I'm also not that familiar with adjusting carbs if it is even necessary.
I have no reason to believe they are off, but it does idle a little high I think and I have had a high speed surge before, but that was fixed by decarb and replacing a leaking fuel hose I believe.
As an effort to optimize performance, should these screws be tightened down or should they be carefully adjusted. I have no idea how the last guy had this set up. I'm also not that familiar with adjusting carbs if it is even necessary.