
This part being universal, it may require adaptations
MIKUNI MKA580 JET (manufacturer part number: 4/042-580) is an original Mikuni part designed for carburetors. It is intended to replace a worn or unsuitable jet, allowing for precise adjustment of fuel flow in the main circuit and fine-tuning the air-fuel mixture during carburetion settings.
Ideal for motorcyclists and mechanics working on carburetors, this jet integrates into Mikuni carburetors to achieve a consistent mixture setting between idle, partial opening, and full load. Replacing a jet can correct a mixture that is too lean or too rich, limit hesitation during acceleration, and ensure a steady fuel supply.
Workshop tips: carefully disassemble the carburetor body, clean the jet well before installation, and check the rest of the circuit (needle, float, filter). Install the engine component cold and check the carburetion on the road or on the bench as needed. Verify compatibility with your Mikuni carburetor model before ordering.