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Part 1: Introduction - Good Karma Productions

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Mikuni Motorcycle Carburetor Theory -101<br />

(www.iwt.com.au/mikunicarb.htm)<br />

•Once Throttle is Opened Far Enough;<br />

–Jet Needle is Pulled High Enough Out of the Needle Jet<br />

–Size of the Hole in Main Jet Begins to Regulate Fuel Flow<br />

•Main Jets Have Different Size Holes<br />

–Bigger the Hole, the More Fuel Will Flow (and the richer the mixture)<br />

–Higher the Number on Main Jet, More Fuel Flows Thru It and Richer the Mixture<br />

to<br />

Engine<br />

Cylinder<br />

Main Jet Controls Fuel Flow from ¾-thru-full throttle.

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