Secondhand Snapper C3203 single stage two-stroke. Wife's aunt gave it to us, hadn't been run in about 10 years. Got it running, but the carburetor was fouled up and hard to start. New carb off Amazon for $20 and a new spark plug fixed it right up. Interestingly, the owner's manual calls for 32:1 mix, but the tag on the engine shows 50:1. Since the weed whacker and leaf blower use that too, I run 89 octane and 50:1 mix.