This jet is identified by the numbers 159 being stamped on it but you may also find that there are other needle jets that though having a different series number stamped on them, are in fact identical to the 159 and thus interchangeable. The 159 series are used in our VM30, 32, 34 and 36 but usually not in the original equipment versions of these carburetors found on production bikes. These NJ’s use a HEX 4/042 type main jet which is a different thread and sizing scale than the round type main jets usually only found in most Kawasaki versions of the VM carburetor.
The lower the letter and number indicates the leaner the jet. Example N-0 is leaner than N-2. These are in 0.01mm increments and the 1/2 size 5’s are in a 0.005mm increments. Only the shown sizes are available.
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