Describe the run from memory. Did it go quiet almost at once or keep running for a while? What do you remember about the controls? You don’t need an exact number of seconds, and you shouldn’t repeat the attempt to get one.
Include whether this was the first use after storage or whether it had already been working that day. The provider needs that history along with the model before deciding what to inspect.
Was it staying on with the choke?
If it kept running while the choke was on and stopped when that changed, include the choke position in your description. That is more specific than a brief start with no other details.
There isn’t enough in the symptom alone to choose a repair. Ask whether the appointment covers finding the cause of the shutdown, and explain any routine service you also want as a separate request.
The technical and safety advice in this draft still needs to be checked against the manufacturer’s instructions by a qualified reviewer. Follow your machine’s manual.
About the review process