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stuttery wr450

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I guess this is a question for JamesD but any advice welcome

Just put in the JD Blue needle, clip 3 and 170 main jet

Fuel screw at about 1 1/4 turns with the standard 48 pilot jet. I mainly ride at sea level to 1000ft

Bottom end and cruising seems very stuttery and jumpy

not smooth at all

Do I need a smaller pilot jet or raise the clip 1 position?

Seems a little rich to me, but I am an amatuer when it come to jetting.

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The pilot jet is normally a #45. A #48 will be rich unless the fuel screw is turned to 3/4-1 turn from seated.

Try switching to the red marked needle in the 5th from top clip position. This will run leaner in the 0-1/4 throttle range.

The next step would be the middle clip position on the red marked needle.

Thanks,

James

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Thanks James,

The Aussie models come out with a 48 pilot as standard and a 42 in the spares kit. No 45.

I did switch to the red needle on the 4th clip pos but did notice it had not as much snap as with the blue needle.

Is this assuption correct or just my imagination.

Heaps smoother low down though and the stutter has gone.

If I buy a 45 pilot will I get the snap back?

matt

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Try the red needle in the 5th from top clip. Keep the same pilot jet (48) and set the fuel screw to 1 turn out from seated. Test ride and adjust the fuel screw for best response at low speeds.

The #45 will have the fuel screw turned outwards more and should run about the same. The blue needle is richer at 0-1/4 throttle and may need the smaller pilot jet (45) to run clean at low speeds.

James

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Tried the 5th clip, still a bit stuttery, I think i will just buy the #45 or keep it on the 4th clip, ran good there.

thanks

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