idle speed

[cajun31]

I know what you are saying, all I'm trying to do is show how, if the bolt is turned, and the nut is mounted solid, as in the idle control, if you are on TOP of the carbs, things go backwards. With the nut in a vise, and the bolt under the nut, from the side you need to turn counterclockwise to tighten it. It has taken me a few years to get the specials idle screw squared away in my head!

unless the nut and bolt are reverse thread ... turning it counterclockwise will not tighten it. Normal thread counterclockwise will always loosen and the bolt will eventually just fall out.

Phil... the only thing different between the series of carbs is as Ray stated and that I know you already know is on the early standards the idle screw was on top. The later carbs on the bottom. But what I will say again, regardless of where the idle screw is clockwise tightens it and counterclockwise loosens it. I am beginning to think this might be a right brain vs. left brain thing. I tried to think about from top to bottom, right side vs. left side of the bike and it is still the same. I know I need to turn the screw clockwise to increase idle and counterclockwise to decrease it. I will leave it at that and hopefully the OP has it sorted out and doesn't have any thing else going on with his carbs. I have seen carbs out of synch actually do weird things when trying to set the idle. Same thing with vacuum leaks.

[oldyam80sg]

I started the bike today and idle was good, so I took it for a ride up the driveway down the street. On the way back to Mom's house maybe 500 ft I shifted into 3rd and the clutch cable end snapped. I think this is the 2nd time I ever had to replace the clutch cable. Lucky for me I was able to shift it into neutral and go down the driveway. Bike still is idling at maybe 1100 rpms.

[bikerphil]

Phil... the only thing different between the series of carbs is as Ray stated and that I know you already know is on the early standards the idle screw was on top. The later carbs on the bottom.

Yes, exactly. I was just trying to clarify that Standard and Special models makes no difference in main idle adjustment placement, just early and late carbs. Since there is no 78 Special, the 79 Special would be the only Special model to have the adjustment (early carbs} on the top.

I agree with you, it doesn't matter which way the screw faces, in is CW and out is CCW.