Possibly running lean

[bikesnbones]

Hi all.
As some may know, I had to have a replacement engine after mine suffered a catastrophic failure.
Cylinder two had a melt down and that was that.
So the new engine, which has less than 11,000 miles, is running sweetly, but after 200 miles, I decided to have a look at the spark plugs.
The electrodes look very white.
I understand that indicates an overly lean mixture ?
Can anyone give me some advice ?
Having gone through all this to get my beloved K1100RS back to health, I'm now worrying endlessly
 :dunno2:

[Scott_]

The Euro spec models did allow for CO mixture adjustment, where as the US versions with Catalytic converters and O2 sensors do not.
There is an adjuster screw,(I think at the left rear of the air box but I have not seen on in person) that can be adjusted while reading the exhaust CO gas mixture from the tail pipe.
That's about the only "adjustment" that I'm aware of beside fixing any/all vacuum leaks.

[TimTyler]

On the K75, the adjustment screw is on the top front-right corner of the airbox. It helps to lift or remove the tank but is not necessary if you're very dexterous. Access the hole by removing the rubber plug with your fingers.

Stick a 5mm allen key into the hole. No worries about it "falling in" or getting caught on anything. The hole is just for the adjustment screw.

The adjustment screw itself is a grub screw. It provides a controlled leak of air bypassing the airflow meter. Clockwise reduces the air leak and counter-clockwise increases the air leaking past the AFM.

The only real way to know if you're mixture is out of spec is to get the CO tested. I had mine checked and adjusted while on a dynamometer.

[bikesnbones]

Thanks guys.
It sounds like the first thing to do is get the CO tested.
I was just wondering though.
Would the type of plug make any difference.
I just replaced them all, with NGK's with a single electrode which were listed for the K1100.
I noticed the original one's were Bosche with double electrode.
Once again
 :dunno

[Scott_]

It doesn't really matter what brand so long as you have the correct heat range.
The Bosh range scale is just the opposite of the NGK's  ie... a Bosh range rating #5 will be the same as the NGK range rating #7.