Motorcycle Carburetor Repair Kit With Large and Small Diaphragm for YM Virago XV400 (2NT)3JB For YM Virago XV400 (2NT)3JB Model carburetor repair kit A sets price.If two carburetors are to be repaired, you will need to purchase 2 sets. The repair kit is equipped with Jet needle (J.N.) and Needle jet (N.J.), In addition, a plunger vacuum diaphragm and a small diaphragm of the shut-off valve are also arranged. which are the most easily damaged parts of the carburetor. Most of the carburetor malfunction, Related to these parts. Therefore, This is very helpful for maintenance work.