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There is an adjustment screw on your carburatur. Run the bike for a couple minutes until warmed up and then adjust slowly until it runs around 1000 rpm. If it's way out of whack, tighten it down and then turn it back 1 1/2 turns for a good starting point.

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14y ago
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Q: How do you set idle on a Harley Davidson fxr 1990?
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