There are several jets in the box, so if you don't have a different custom from OEM, you can do setting without any problem.
And the Instruction Manual is great. [Contents] is clearly described, and Lean, Rich's symptom description. It really describes things in detail, such as judging by the burn color of the Plug.
Setting is different from individual to individual, so it is difficult to say, but it is a Large variable reference because it is one sight. I also referred to these and did Overhaul and Setting, but it changed dramatically for the better.
Carburetor overhaul, makes Setting more accessible. I think it is a wonderful product. Please continue to expand the lineup for the old car riders.