Carburettor jet M4 0,72

Carburettor jet M4, 0,72 mm hole. The jet (nozzle) meters the petrol entering the air stream. The hole size sets how rich the mixture is: a bigger hole means more petrol, a smaller one means less.

• Thread M4 and 0,72 mm hole — both must match what you unscrew from your carburettor
• Supplier code WI AI302021 — if you order again, quote it
• You'll change it in a few minutes: unscrew the carburettor's bottom cover, remove the old jet, and screw in the new one
• After changing the exhaust, air filter or cylinder, the mixture usually runs leaner, and the main jet has to be taken larger — the size is found by testing, not by calculating
• The neighbouring M4 thread size is 0,80 mm; look for jets like this, and jet kits, in the "Carburettors and their parts" category

To be straight with you: the jet only shows its thread size and hole. The maker does not say which carburettor it fits, or whether it will be the main jet or the idle jet in yours. Jets with the same thread differ in length and head shape between carburettors, so a matching thread alone is not enough — compare it with your old one, or send us a photo of it, and we will tell you if it matches.

24-month warranty · tel. +370 685 777 56