jet Needles

THE FIRST DIGIT IN A MIKUNI NEEDLES NUMBER REFLECTS IT’S SERIES NUMBER

IMPORTANT MIKUNI TUNING CHARACTERISTICS

The Mikuni Jet Needle is the tapered rod that is positioned in the throttle valve by the ‘E’-Clip. The taper of the needle increases the clearance between the Jet Needle and the fixed Needle Jet outlet as the throttle is opened. As the air flow volume increases past the throttle slide, the fuel volume is also increased to maintain the correct air/fuel ratio.

MIKUNI NEEDLE ‘E’-CLIP POSITION

The position of the Mikuni ‘E’-Clip in the Jet Needle is used to correct or change the air/fuel ratio between 1/4th and 3/4th throttle valve position. The ‘E’-Clip can be raised or lowered on the Jet Needle. To richen the Mikuni fuel mixture the ‘E’-Clip is lowered on the Jet Needle, raising the Jet Needle. To lean the Mikuni fuel mixture the ‘E’-Clip is raised on the Jet Needle.

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