How do you loosen a nut on a lawn mower blade?

Put a wrench socket of the correct size on the head of the bolt securing the blade to the blade holder, and apply force to the wrench handle in the counterclockwise direction to loosen the blade bolt. The bolt may have a 1/2-inch, 5/8-inch or 3/4-inch head, depending on mower model.

Are mower blade nuts reverse thread?

Most lawnmower blade nuts are reverse-threaded in order to secure the blade on the drive shaft of the engine. This ensures that the blade’s rotation does not loosen the nut. However, not all blades use a reverse-threaded nut to secure them to the engine’s drive shaft.

Are lawn mower blade bolts left or right hand thread?

The overwhelming majority of mower blade retainers (almost all are bolts) are normal right hand thread. The best indicator that the method of retaining the blade(s) might deviate from the norm would be found in the side which the grass is discharged from the mower deck.

What size is the nut on a lawn mower blade?

What size are the tractor cutting blade retainer nuts and what direction should they be turned? The retainer nut on most of our riding mower blades are a 5/8″ thread diameter. This sized thread diameter nut normally requires a 15/16″ wrench or socket tool in order to remove/install.

Which side of lawn mower blade goes down?

To determine which side of your lawn mower blade is up, first figure out which side is the sharp cutting edge, and which side is the blunt edge. Look for a sticker indicating which side goes up and which side faces downward. The cutting edge should face the grass while the dull edge should face the deck of the mower.

Which way does a lawn mower blade rotate?

The blades on many brands of walk-behind mowers rotate to the right, the clockwise direction, when you are mowing. To remove the blade, you must turn the blade’s retaining bolt to the left, or counterclockwise.

Which way do you turn the bolt to remove a lawn mower blade?

To remove the blade, you must turn the blade’s retaining bolt to the left, or counterclockwise. Before undoing the blade, tip the mower on its side with the engine air cleaner facing up and block the blade with a piece of wood so it can’t turn.

Which way to loosen a lawnmower blade?

Turn the lawnmower on its side and prevent the blade from turning by wedging a two by four in between the blade and mower deck. Remove the bolt that holds on the lawnmower blade. A simple box wrench or adjustable wrench will be sufficient to remove the bolt.

How do you lower the blade on lawn mower?

Keep a lawnmower blade sharp to improve fuel efficiency and to extend engine life. Carefully remove grass clippings from under the mowing deck after each use of the mower to prevent rust from forming. Brush off dust, grass clippings and other debris from the top of the deck and engine cover after each use to promote engine cooling.

How do you change the blade on a lawn mower?

Change the Lawn Mower Blade. Place the new or sharpened blade onto the drive shaft with the cutting edge of the blade facing to the right. Place your wood block back under the blade, then use your wrench or socket to replace the bolt by turning it clockwise.

What is the best way to sharpen a lawn mower blade?

To sharpen your lawn mower blade, you’ll need a socket or wrench to fit the blade nut. Tough nuts may call for a breaker bar and/or a penetrating lubricant. You’ll also need two clamps, a block of wood and, of course, an angle grinder with a metal grinding blade.