2 stroke? Check the line from your tank to the motor. Actually if it's very old at all, I'd just replace it. Replace the bulb. I only run NON ethanol gas in my outboards to help prevent some of these issues. Check for water in fuel...I'd just dump and refill. Then move to your fuel line under the hood. check to make sure none of the lines are cracked and sucking air or leaking. Then the carb. That would be my plan of attack. I've never worked on a Suzuki in particular but the all need fuel in the right amounts to run. Ethanol is good for farmers, horrible for small engines.