I am not going to argue with you. You buy a blower which you have reason to believe is stolen; It is a crime period. Committing a crime to solve a crime is lunacy.
Possibly going to jail to get a guy his blower back is stupid. So, you go be that stupid person.
You forget the fact when I am offered something stolen, I call 911 right then and there. Problem solved. If not stolen, no problem. If stolen, you get your blower back.
You may be the greatest lawn care operator around. You are just plain wrong when it comes to the law.
But feel free to act on your ignorance. I understand your intentions are good, but your actions can land you in jail.