Top tips to clean the needle valve on a carburetor

Many carburetors on the market today use needle valves. The needle jet is actually a long, thin rod that is tapered at the bottom, placed in the inlet side of the main jets. This rod responds to the movement of the throttle. As it is lifted out of the main jet, more fuel is allowed to flow in; conversely, as it is dropped in the jet, the fuel flow lessens.

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