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Couple days ago while I had the radiator off I decided to double check the timing so pulled the plugs to ease the turning of the engine in neutral. All plugs appeared to be sooty black, not wet....just sooty. To me that spells "rich" so now that it's all back together, I want to lean out the fuel/air mix. Problem is...my recollection muscle doesn't seem to have as much gray matter functioning as in years past, so which way leans out the mixture; screwing them out or in(the pilot screws)?

PS: Timing was spot on, just finished reconditioning the starter and it turns over real good now, everything working great so far, motor/bike runs like a banshee. Just remember to put the cap back on the crankcase when done checking the timing and before you start the motor. Don't ask......@#&*%@#!!!

in is lean..out is fat.

OK, thanks, the carbs are similar to those on my Valkyrie and that's the way it works on them but just wanted to make sure. Big difference in accessing them, these are where you can get to them easily but the Valk is a PITA and takes a special shape tool to boot.

Best way I remember it is that the location of the screw determines what it adjusts- before the carb body, it's air. After the carb body, it's fuel.

After that, it's just like a valve- In turns it off, out turns it on.

(Now, don't ask my any advice on the CORRECT way to set them, because that is a mystery I have so far been unable to solve.... )

Lucien Harpress wrote:Best way I remember it is that the location of the screw determines what it adjusts- before the carb body, it's air. After the carb body, it's fuel.

After that, it's just like a valve- In turns it off, out turns it on.

(Now, don't ask my any advice on the CORRECT way to set them, because that is a mystery I have so far been unable to solve.... )

what? the location of the screw...... before the carb body........ after the carb body.
yes, that is a mystery.
I need pictures or something, anything to explain this, please.

gltriker wrote:

Lucien Harpress wrote:Best way I remember it is that the location of the screw determines what it adjusts- before the carb body, it's air. After the carb body, it's fuel.

After that, it's just like a valve- In turns it off, out turns it on.

(Now, don't ask my any advice on the CORRECT way to set them, because that is a mystery I have so far been unable to solve.... )

what? the location of the screw...... before the carb body........ after the carb body.
yes, that is a mystery.
I need pictures or something, anything to explain this, please.

Layman's way, after the body=GL1000. Before the body =GL1100. Easy enough?

.

robin1731 wrote:

gltriker wrote:

Lucien Harpress wrote:Best way I remember it is that the location of the screw determines what it adjusts- before the carb body, it's air. After the carb body, it's fuel.

After that, it's just like a valve- In turns it off, out turns it on.

(Now, don't ask my any advice on the CORRECT way to set them, because that is a mystery I have so far been unable to solve.... )

what? the location of the screw...... before the carb body........ after the carb body.
yes, that is a mystery.
I need pictures or something, anything to explain this, please.

Layman's way, after the body=GL1000. Before the body =GL1100. Easy enough?

.

Easy enough?
GL1000 body vs. GL1100 body..... after vs. before.....fuel vs. air
Luke offered "the screw" adjusts fuel in one carb body configuration? and "the screw" adjusts air in another carb body configuration?
Is "the screw" a pilot fuel delivery volume adjuster in one carb body, and an air volume adjuster screw in the other carb body?
Respectfully, my pressing for meaningful clarification was a pointless waste of your time, Robin.
Let's just pretend I never inquired.

Done.
Completely

Yeah, that came out totally wrong.

.

How about this one. If the screw is on the intake/air filter side of the carb that is before the body. If it is on the head side of the carb that is after the body. Think of it as the way the air/fuel flows through the carb.


Best way to set them? When you get the highest idle speed as you adjust them.
.

Are you sure the choke is adjusted correct? The 1200 uses an enriching circuit which adds fuel, and if partially on, bike will run well, but rich looking on the plugs. Make sure it is off both at the bars and the carbs

CYBORG wrote:Are you sure the choke is adjusted correct? The 1200 uses an enriching circuit which adds fuel, and if partially on, bike will run well, but rich looking on the plugs. Make sure it is off both at the bars and the carbs

Yes, that was the first thing I checked. I'll have some time this weekend to mess with it, at least the adj. screws are easy to get at. I'll be putting the bike up for sale soon and want to make sure everything is running top notch.

John, change the O rings on the carb connector tubes. My son's 1200 was running very rich and I found some of the O rings were dry and cracked. Changed them all and the bike runs perfectly again.
Mike Coleman
'84 Wing-Lite (ex-Aspencade)
'84 un-Terstate
'84 Standard (as yet un-named)