Springtime, the smell of cut grass and birdsong. My B&S mower started with first pull after a long, cold winter. I'd had the tune in my head for a while but suddenly the lyrics came as I cut the grass. This song is my story. Link here:
PS By the way, some friends (musicians among them) have been so taken by the tune that they are going choose a Briggs & Stratton as their new mower because this song inspired them. They were very kind to say that, but also mentioned that that it was a weird subject for a song!