I exchanged the Main jet as it was at the time of the new car as a part of Carburetor 's Overhaul. As the Plug was in a CUB taste, I tried to replace the aged deterioration of Main jet with suspicion. Engine startability has improved. Plug is also normal burning condition. Due to aged deterioration and repeated repeated wearing, frequent use of Carburetor cleaner I thought that the old Main jet was getting a little hole large enough?. (It is a personal opinion to the last. There is no confirmation because it is a precision part) The price is also cheap, and we recommend purchasing Jet of ManufacturerOEM along with Overhaul of Carburetor.
There are plenty of Jet stocks and it will be helpful. Especially when Tune Engine, it is nice that there is a Size which is not sold in mass retailers.
I bought it for Carburetor setting. I will be very saved because the fine Size also arrives with short delivery time. There is no problem with regard to quality. It seems good to keep each SizeStock.
Although it was not worrisome if it was a one cylinder, but as it was a 4 cylinder, the flow rate of the jet was to be Mikuni genuine in respect of accuracy. Although there is a cheap one of other company, the genuine is good.