Running Lean

drg650 · 04-21-2008, 09:06 AM

I have a 2002 CR250R.I just picked it up and put my first two hrs on it. It has a pro circuit pipe & silencer force 3 reeds. The Engine is stock. After running the bike for 3 hrs I checked the plug and compression. The plug was a VERY VERY light tan. And the compression was 195 psi.When I was riding the bike, it would sometimes sputter when I hit the gas. And one time it bogged out and then cut in. The carb is clean. I checked with the specs from pro circuit and the only thing it tells me to change in the carb.Is the needle.3rd step.
Can someone please help me with the leaning out problem?
Thank You

Hardtail · 04-21-2008, 10:20 AM

Did you check to see if the needle is set at the third step? Could be you need to turn the air screw in, don't turn it more than 1/4 turn at a time with the motor at opperating temp, then see how it does.

04-21-2008, 09:06 AM	#1 (permalink)
drg650 C Rider Join Date: May 2007 Location: Everett Canada Posts: 19	Running Lean I have a 2002 CR250R.I just picked it up and put my first two hrs on it. It has a pro circuit pipe & silencer force 3 reeds. The Engine is stock. After running the bike for 3 hrs I checked the plug and compression. The plug was a VERY VERY light tan. And the compression was 195 psi.When I was riding the bike, it would sometimes sputter when I hit the gas. And one time it bogged out and then cut in. The carb is clean. I checked with the specs from pro circuit and the only thing it tells me to change in the carb.Is the needle.3rd step. Can someone please help me with the leaning out problem? Thank You

04-21-2008, 10:20 AM	#2 (permalink)
Hardtail Pro Mototips Member Join Date: Dec 2006 Location: Southeast V.A. Posts: 1,292	Did you check to see if the needle is set at the third step? Could be you need to turn the air screw in, don't turn it more than 1/4 turn at a time with the motor at opperating temp, then see how it does. __________________ I love the smell of gasoline!! I woke up.....life is good!!! Last edited by Hardtail; 04-21-2008 at 10:36 AM.

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