No it is a RH thread like a normal bolt, I fought with mine because I could not get to move. Then I went to the store and bought a spindel and nut (8 bucks total ) to make certain what it was going the right way . The way I did it was by using two 1 1/8 in half inch drive sockets. One on a breaker bar for the under side, the blade nut and the other on a 12 inch ratchet handel that I held in place with a 5 foot length of rope NOT A BLOCK OF WOOD that is just SILLY. It was a walk in the park. Don't forget to re grease when you are done. OH pull the wire off of the spark plug before you start.