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.
Are mower blade bolts 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.
Which way do you turn the bolt to remove a riding 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.
Can you put a lawn mower blade on backwards?
Mower blades have a cutting edge at each end. The key to replacing the mower blade is installing the new one properly. It is common to install a blade upside down. When this happens, the lawn mower will not cut correctly, or it could damage the mower.
Are Cub Cadet lawn mower blades reverse threaded?
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.
Why is my mower cutting lower on one side?
Step cutting is usually caused by mower deck damage, misadjustment, or mower blade damage. Normally the deck just needs to be re-leveled. … The next thing to do is to turn the blades and measure again. If the measurements are not the same, one of the blades is probably bent.
Which side of mower blade faces down?
The sharp edge should face outward and down toward the grass. The dull edge should face the inside of the mower. That being said, changing a lawnmower blade involves various steps, and you need to make sure that you do everything correctly.
Are Toro mower blades reverse thread?
Having said that the blades of a lawn mower would be reverse threaded. Yes you heard it right. … Removing your blade for sharpening or replacement will require the use of a socket wrench to unbolt the lock nut, which is often reverse-threaded.
What size bolt holds on lawn mower blade?
Different lawnmowers models have different bolt sizes. The standard sizes include 1/2 inch, 5/8 inch, and ¾ inch ones. You need to select your socket accordingly. A socket wrench that isn’t the right size will not move your bolt and is likely to get stuck.
How much torque should a lawn mower blade have?
To tighten the bolt or nut use a torque wrench and tighten it to proper torque specification. 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.