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Where to set idle speed screw after carb rebuild for 1st start? Rule of thumb?
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Where to set idle speed screw after carb rebuild for 1st start? Rule of thumb?
So I'm cleaning/rebuilding the BS34SS carbs on my newly-acquired 81 GS1100E. I didn't think to make note of the position of the idle speed screw (X turns out, etc) before teardown and cleaning, and I know I've adjusted it in an out while cleaning and lubing the mechanism, doing a "bench sync" etc and it is probably very far from where it started. I'm wondering if there is a rule of thumb as far as idle speed screw setting that will get me within a reasonable range to allow it to start up for the first time?Tags: None
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Run it in until it bottoms out, gently. then back it out 3 full turns. That should be plenty rich enough to start.Dogma
--
O LORD, be gracious to me; heal me, for I have sinned against you! - David
Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense. - Carl Sagan
--
'80 GS850 GLT
'80 GS1000 GT
'01 ZRX1200R
How to get a "What's New" feed without the Vortex, and without permanently quitting the Vortex
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Originally posted by Dogma View PostRun it in until it bottoms out, gently. then back it out 3 full turns. That should be plenty rich enough to start.
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Originally posted by phydeauxmutt View PostIs he asking about the idle MIXTURE screw (which should be turned out 3 turns) or the idle SPEED screw, as mentioned in the thread title?I think I'll be following Phydeauxmutt's advice for now and see how it goes!
BTW Phydeaux - you hail from cajun country? I have kin all over south LA, two of my (male) cousins are named Rene and Boyeaux, and their dog growin up was named Phydeaux (a catahoula, naturally). Anyways. seeing your name gave me a little chuckle this AM
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Originally posted by phydeauxmutt View PostIs he asking about the idle MIXTURE screw (which should be turned out 3 turns) or the idle SPEED screw, as mentioned in the thread title?Dogma
--
O LORD, be gracious to me; heal me, for I have sinned against you! - David
Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense. - Carl Sagan
--
'80 GS850 GLT
'80 GS1000 GT
'01 ZRX1200R
How to get a "What's New" feed without the Vortex, and without permanently quitting the Vortex
Comment
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[QUOTE=Who Dat?;2656774]Originally posted by RocketScientist View PostIn this thread I'm looking for where to set the idle SPEED screw to give me a fair shot at actually getting the bike to fire and turn over. /QUOTE]
Phydeauxmutt answered that in post #2.I think I'll be following Phydeauxmutt's advice for now and see how it goes!
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Originally posted by rphillips View PostUh, are you sure? "two full turns in after after it first touches", that would seem pretty darn tight...RocketScientist???
The idle SPEED screw can be turned MANY times after it first contacts the linkage. Anything much more than two turns will send the tach needle WELL into the red zone.If you're not living on the edge, you're taking up too much space.
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Forum GuruPast Site Supporter
Super Site Supporter- Jun 2018
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Because this thread is confusing a few people, a pic to clarify. This is the Idle speed adjustment screw to which the OP is referring.
Rich
1982 GS 750TZ
2015 Triumph Tiger 1200
BikeCliff's / Charging System Sorted / Posting Pics
Destroy-Rebuild 750T/ Destroy-Rebuild part deux
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