- Automatic cold-start enrichment, in the case of digital fuel injection.
- Use of a very rich miniature starting carburetor, which was part of the main casting on many Japanese motorcycle carbs.
- Use of a “choke,” which often takes the form of something that restricts (chokes) the flow of air through the carb, creating an extra-strong vacuum that pulls a lot more fuel into the airflow.
- In the most primitive case, by priming (raising the fuel level in the carburetor’s float bowl until liquid fuel puddles in the carburetor’s air passage). On bikes of this type, there was a button by which you could press the fuel float down, opening the float valve and allowing fuel level to rise. The presence of this extra fuel in the carburetor might do the trick. This was called “tickling the carburetor.”