Mikuni FJ8-6F09 Jet Needles - 62.3 Needle - 28.9 Length to Taper electrical-gauges-components-air-fuel-gauges 2002-2005 Harley Davidson FLHTCI Electra

2002-2005 Harley Davidson FLHTCI Electra Glide Classic

2001 Suzuki GSX-R600

2001-2008 Husaberg FE650E

2003 Kawasaki KLX400R

2013-2014 MV Agusta F4RR

Mikuni FJ8-6F09 Jet Needles - 62.3 Needle - 28.9 Length to Taper electrical-gauges-components-air-fuel-gauges 2002-2005 Harley Davidson FLHTCI Electra10mm 2. 516. 20mm 2. 516. 30mm 2. 475. 40mm 2. 210. 50mm 1. 949. 60mm 1. 678. 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.