How should I set the Pilot screws on the carbs?
Start with the screws 2 and 1/2 turns out from the lightly seated position. This will get you close. The idle mixture screws will not have that much affect on the idle speed. They are more of an idle quality and initial throttle response adjustment. They definitely won’t raise the idle speed significantly. If you’re too far in either direction with the mixture screws, it will usually decrease the idle speed and make the engine die out easily. Make sure all the choke plungers are seated and sealing. If you removed the choke rod and the small plunger clips on this rod, you may have swapped the clips on the #1 and #4 carbs. These 2 clips are slightly different. If you swap them, one of the plungers will not seat all the way and the result will be a high idle speed that the idle speed adjuster will not compensate for. Another possibility is the carb sync is all messed up. Hopefully you synced the carbs when you finished, it not you need to! [David Raforth] I set my mixture screw like David
