Honda 9.9 4 stroke dies on idle - Boating

honda99I have a 9.9 Honda that is 7 years old. Never a problem with it. Had it out a couple times this spring. took it out and it ran for about 30 seconds and shut down. Restarted and same thing. Looked and no waterThe Honda BF8 and BF9.9 are 4-stroke portable engine. Great for aluminum fishing boats, inflatables, sailboats, or as a kicker, the 8hp