My Honda 535 will start and run for 5secs then stops. If I then continue pulling the starter cord it will start again after about 10 pulls and run again for another 4/5 secs then stop again.
I have flushed the tank, cleaned out the carb bowl, cleaned out the main jet and checked the fuel flow from tank to carb bowl. Everything seems to be in order. Perhaps I am missing something basic?.
Had this problem with a Honda power washer turned out to be the spark plug.
Put a new spark plug in and cleaned the lead never a problem since.
I can help ...
Running problem with my Honda 535 SP Mower?