Mikuni FJ8-6FJ40 Jet Needles - 68.7 Needle - 35.7 Length to Taper engine-clutch-components-inner-hubs of clearance is required behind

of clearance is required behind the surface these are installed into

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Mikuni FJ8-6FJ40 Jet Needles - 68.7 Needle - 35.7 Length to Taper engine-clutch-components-inner-hubs of clearance is required behind10mm 2. 51. 20mm 2. 51. 30mm 2. 51. 40mm 2. 36. 50mm 1. 98. 60mm 1. 49. Original TM38 Flatslide. 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.