The first thing I’d note before calling is how the mower was stored, because that gives useful context without turning the request into a list of guesses; keeping Toro phone number could make it easier to explain the storage period and the change in cranking sound in one clear conversation. I’d also write down the model, fuel type, battery status, and the last time it started normally. On my own equipment, those details make troubleshooting much easier because they describe a pattern instead of one failed start. I’d avoid trying several extra fixes before speaking with support so the original behavior is still easy to describe.