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mtscott

YZ450F 2006 Spark Plug Removal Help and Jetting

7 posts in this topic

Hello, I just bought a YZ450F 2006 and need to re-jet the carb. I just

installed a FMF pipe and it is now bogging when pinning the gas. I

went to pull the plug wire off and there is not enough clearence to get it

out of the hole. The plug cap is hitting the frame. I have the spark

plug removal tool from yamaha , but just need to get the plug cover off.

The service manual does not give me this information.

Also, does anyone have information on how I should jet this bike? All the jetting is currently factory and the elevation here is 2500-4000 feet with a temperature of 80-100'F.

Any help you can give me will be greatly apreached!

Thanks much,

Mike :excuseme:

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On the '06 you have to remove the motor from the frame to change the plug.

Not really......just wiggle that thing off. It will come off.

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Unplug the wire from the cap, then try it. I had same problem. My bike was popping on decel, I changed pilot to a 48, kept the 165 main. Your high elevation though, ask Burned what he thinks.

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