Mikuni FJ8-6DH02 Jet Needles - 62.3 Needle - 28.0 Length to Taper suspension-fork-springs 1985 Harley Davidson FXEF Fat

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Mikuni FJ8-6DH02 Jet Needles - 62.3 Needle - 28.0 Length to Taper suspension-fork-springs 1985 Harley Davidson FXEF Fat10mm 2. 511. 20mm 2. 511. 30mm 2. 466. 40mm 2. 295. 50mm 2. 00. 60mm 1. 660. 30 38 Spigot Mount. The Jet Needle controls the fuel mixture in the mid range 1 4 3 4 throttle position. The taper of the needle determines the amount of the fuel. For example: the thinner the diameter of the needle, the more fuel will be drawn. The thicker the diameter of the needle, the less fuel can be drawn.