I put on a aftermarket carb and didn’t adjust anything normally they work fine. This one upon start will idle for s second then rev up really high for a few seconds then back to idle and keeps repeating. Also the speedometer got some water in it and needs replacing would this make it cause that problem? TIA David
That's right I forgot they still offered the 400 rancher in 07, like said above it could be the China carb, try rebuilding the old one or find a used OEM or they still sell new OEM carbs on partszilla, and rockymountainatv for around 160
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