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Arctic Cat: 1M 2001-2005, all models in the Mountain Cat / 1M chassis
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Old 07-20-2018, 02:32 PM
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Default Mountain Cat 600 Needle Replacement

I am working on a 2001 AC Mountain Cat 600 carbureted. I am trying to find a leaner needle for the flat slide carbs on this sled. My mid range is still too fat even with the clip to the top. I am jetted on the main jet leaner than chart by 3 sizes. My color is good to lean full throttle but rich during average riding. The current needle is a 9DFH4-60. I am trying to find a chart that lists lean to rich comparisons with other jet numbers. I do have needles off from a 800 Mountain Cat 9DFH2-59. That needle is a hair longer but I cannot tell if it is thicker or if it is leaner than the 600 needle and by how much.
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Old 07-20-2018, 04:24 PM
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The old carbed zr's had a needle for 9000 and above (9DH2-3) but I'd be surprised if it was still available.
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