No, the needle i speak of is on the actual slide inside the carb. Need to remove the top cover to access it. (some don't have the adjustable needle, some do)
The idle mixture screw is what you're talking about.
Best way to adjust that is to use a tachometer.
Turn your idle up a couple hundred RPM over normal. I usually set it around 1000 RPM.
Then turn the idle screw IN or OUT 1/4 turn and see if the RPM goes up or down.
You will be about perfect when you get your maximum RPM reading.
NOTE: Wait a few seconds between turning the screw to allow the change to take affect.
Ideally you want to be around 1 - 1.5 turns out from a seated (closed) position.
If it runs best with it almost closed, you're too lean and need to jet up on the pilot.
If you're like 2.5 - 3 turns out, you're too rich and should jet down.
Hopefully this works out for you.
What exhaust are you using right now?
|