Main jet 101 OCTANE 101 for Dellorto carburetor 5mm 040

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Main jet fits 17.5 to 24mm Dellorto carbs and their replicas. To tune the carburetor, always install a large jet first. At full throttle, the engine should then start to stutter (4-stroking). Now reduce the main jet in increments of 5 until the engine is running smoothly. Caution: a main jet that is too small makes the mixture lean, which can lead to cold seizures. Main thread of the nozzle = M5.
Please select the appropriate size from the list below.

5mm 040