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272 big bore jetting??

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i need to know what jets i need to change and what size. its a 05 YZ250F with the 272 big bore. its all stock other than that. i just put the engine back in the chassis and i wanna get it jetted right before i start it up. o yeah im at sea level.

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i need to know what jets i need to change and what size. its a 05 YZ250F with the 272 big bore. its all stock other than that. i just put the engine back in the chassis and i wanna get it jetted right before i start it up. o yeah im at sea level.

Hello

is the jetting also stock?

mj: aprox from 182 to 175

needle: one clip leaner

pj: adjust it when the enigne is running

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Here we go....I have a 276 kit in an 01 and 172 main, 40 pilot, stock ELP #3. Runs great. I don't know why the newer bikes run so big main jets.

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