Lean running 08 klr 660 - Kawasaki KLR 650 Forum
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post #1 of 5 Old 01-16-2013, 11:48 AM Thread Starter
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Lean running 08 klr 660

Anyone have any recommendations for improving lean (spark plug is way whiter than I like to see) running conditions

Can you just adjust the pilot screw without doing the entire 22 cent mod?

Thank you in advance for any suggestions.

Oh, another question. Any recommendations on where I can get a used or cheap gas tank rubber doughnut (the thing on the frame)?

Last edited by Phil Behm; 01-16-2013 at 12:26 PM. Reason: forgot something
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post #2 of 5 Old 01-16-2013, 12:39 PM
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Ebay on the donut and buy the KLX needle kit from Eagle Mike and all your carb issues will be fixed. It's 100% tunable. Come with a few jets and new stainless carb screws....a good deal......inexpensive too.

Yes you can unplug the pilot jet screw and turn it all the way in and then turn it out to two turns from seated. That is the usual setting. They come very lean from the factory. It may on it's own fix the plug colour to a more suitable light chocolate browm.......good luck....hope this helps.....

Willys
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post #3 of 5 Old 01-16-2013, 02:20 PM
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Quote:
Originally Posted by Phil Behm View Post
Anyone have any recommendations for improving lean (spark plug is way whiter than I like to see) running conditions

Can you just adjust the pilot screw without doing the entire 22 cent mod?

Thank you in advance for any suggestions.

Oh, another question. Any recommendations on where I can get a used or cheap gas tank rubber doughnut (the thing on the frame)?

The .22 mod will richen up the low and mid speed carb circuits. There's not much to it, you have to turn the carb to get to the cap on the pilot screw so you might as well pull the slide while your there.

The main jet is on the rich side stock so you usually don't have to change it out.

I lost one of the rubber tank donut things while working on my bike in the garage somehow, it just disappeard! I went to a hardware store with the other donut and found a big rubber stopper with the min OD the same as the max OD of the donut. Drilled/filled out the middle and used a bench grinder until it fit. Still have black rubber dust showing up after 2 years!

No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him. 1 Cor 2:9
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post #4 of 5 Old 01-18-2013, 01:30 AM
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Here's a semi related question: Is there any advantage to doing the snorkel removal/ L-mod verses just leaving the airbox side door off? Side door could go back on for bad water conditions.
Regards....justjeff

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post #5 of 5 Old 01-18-2013, 07:55 AM
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It was prooven many years ago that there is too much direct air so to speak with the door off, I guess it needs the airbox to help slow or bounce the airflow around before it gets actually into the filter........it's been a while sinse this was brought up and fully discussed that I have forgotten the reasoning behind it.
IF, you are thinking of doing the "L" mod, do it using 4 1" holes and not just a huge "L" shaped hole as you can plug the holes using electrical boc plugs if you change your mind later on.

Willys
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