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The Higher the Jet Number the Bigger the hole init so more fuel goes into engine to make it richer, the smaller = vice versa less fuel means lean running.
some carbs a 120 means 1.20 mm diameter
but on Mikuni it is lm flow (milliliter) flows.
so depends on who makes carb.?
but yah bigger is more fuel
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∙ 12y ago
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