I bought a 21" inch blade on clearance sale at Walmart about a year ago as a backup. Okay, this is the scenario, the blade is wrapped in plastic, never been opened until this morning. Made in USA. When I was about to swap it with my old one I noticed the blade is not sharp. I said how could this be? It is brand new & it is not sharp. This is my first time to put in a new blade into my Murray B&S mower. Is it meant to be installed as is or do I need to sharpen it?
Thanks for any input.
Thanks for any input.