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  5. 2150 Carburetor Tips
  • Test for excessive throttle shaft play by moving the shaft back & forth. Any more than 1/32" and your carburetor should be re-bushed. This should be left to a professional. We have a couple of resources for this. Too much free play will create a vacuum leak along with a rough idle.
  • Use a float spring on the float. This will take the bounce out of the float on rough roads.
  • The FL21 Nitrophyl float should weigh 9.5 grams.
  • When converting from a hot air choke to an electric choke, block off the hot air tube air intake.

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