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.

What size wrench Do I need to remove a lawn mower blade?

Dismount the mower deck from the lawn tractor to replace worn-out mower blades. Changing the mower deck’s three blades requires a 1 1/8-inch socket, box or open-end wrench for hex nuts, a block of wood and a set of new blades.

How do you remove a nut from 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 lawn mower blade nuts?

The lawnmower blades itself is not threaded, but most nuts that held the blade in place are reverse threaded. The reverse thread helps to secure the blade on the drive shaft such that the rotation of the blade does not loosen the nut. It is important to note that not all lawnmowers use a reverse threaded nut.

Are lawn 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.

What is the torque on a lawn mower blade?

Walk behind mower blades should be installed between 38 and 50 foot pounds of torque. Riding mower blades should be installed between 70 and 90 foot pounds of torque.

Which way does the nut turn on a lawn mower blade?

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.

Are Cub Cadet mower blade nuts reverse thread?

The retainer nut on most of our riding mower blades are a 5/8″ thread diameter. This nut is a standard right-handed thread (rotate clockwise to tighten, counterclockwise loosen) and should be tightened to between 70 and 90 foot pounds of torque to fasten securely.

Do all mower blades turn counterclockwise?

Most lawn mower blades rotate in a clockwise direction (counter-clockwise when viewed from below), and as such have the cutting edge on the right side. If you are unsure of how your mower rotates, check the position of the discharge chute; if it is on the right side angled back, the blade turns clockwise.

Can you over tighten a lawn mower blade?

Can You Overtighten a Lawn Mower Blade? Unfortunately, you can overtighten your mower’s blade if you aren’t careful. This can damage the blade itself in some cases – the blade can even break after hitting a hard object if it’s overly tight.

How do you loosen a lawn mower blade?

These steps can help assist you with a push mower blade replacement:

1. Disconnect the spark plug and ignition wire.
2. Siphon out the gas.
3. Allow access to the underside of your mower.
4. Put on gloves.
5. Loosen the retaining bolt on the blade.
6. Replace the lawn mower blade.
7. Tighten the retaining bolt.
8. Reset the lawn mower.