Normal
Often, Seafoam, AT MANUFACTURER'S RECOMMENDED CONCENTRATION, wil help clean up carbs that have only a couple year's build-up. Once you can get it started. Be aware that it takes a lot of cranking to fill the float bowls, and choke will be needed. I usually crank no more than 10 seconds then wait 30. Expect five or more cycles first time. And make sure battery fully charge, run/stop switch in run.