It ran when you put it away, but won’t start now

Did the engine run at all?

An engine that caught briefly and stopped gives someone a different starting point from one that never began running. A noise from the starter is another detail to mention. Use what you remember from the attempt; don’t try again just to fill in the description.

The advice here is for gasoline machines. A plug can be for a gas engine’s electric starter, so check the power type if you’re unsure which instructions apply.

What do you know about the time in storage?

Note roughly when it last ran and what you know about the fuel and preparation before storage. If someone else put it away, or you don’t remember, say that. There’s no need to fill the gaps with an assumed fuel treatment or service.

The timing doesn’t identify a failed part by itself. When you contact a provider, ask about diagnosing the starting problem rather than booking a seasonal check and assuming it will include the fault.

If getting a non-running snowblower to a shop is the obstacle, ask whether someone can assess it at home. Explain where it sits; don’t move unsafe equipment to prepare for the inquiry.