Tune up kit 01 The basic kit for tuning the Keihin CV carburetors With this kit consisting of different main jets Part-load jets and a special jet needle can be used to fine-tune the carburettor The scope of delivery of the >Tune up Kit 01 includes: Main jets: 185-190-195 Part load jets: 42-45-48 Jet needle: Tune up Idle Mixture Screw: Tune up small parts The scope of delivery includes a complete guide to the procedure and the analysis, as well as tuning and fixing problems with the Keihin CV carburetor.