Garden & OutdoorGuide

Are Lawn Mower Blades Reverse Thread?- Know the Real Facts About Mower

Lawnmowers help in maintaining your lawns and cutting the grass as and when required. If you have a garden and own a lawnmower, you’d know that they require a bit of maintenance from time to time. After using the lawnmower frequently, its blade may get blunt, and you’ll need to sharpen it again to ensure smooth functioning. It is usually recommended to sharpen the blades of your lawnmowers every two to three years to maintain their quality. There seems to be a lot of misconception as to whether the lawnmower’s blades are reverse threaded or not. Here’s an answer to it.

Are Lawn Mower Blades Reverse Thread?

Threading is an important aspect of all rotating objects because it helps in their movement. Threading ensures that the movement of the blade does not loosen the nut bolt. It is designed in such a way that rotating the nut bolt in one particular direction, tightens it in its place. 

Usually, the blades of the lawnmowers are reversely threaded. Reverse threading secures the blade on the drive shaft of the engine and makes sure that it doesn’t loosen up over time. Normally, in most objects, rotation on the right side refers to loosening, and rotating on the left side refers to tightening. Because in some of the lawnmowers, this process is reversed, it is known as reverse threading. However, all of the lawnmowers don’t need to have reverse threading. So you need to check the blades on your lawnmower to determine its threading. 

How To Remove The Blades of Lawnmower?

Remove the Blades of LawnmowerFirstly, you need to lift your mower in a way that its blade becomes visible. Make sure that the mower does not spill oil from its engine; the best time to do this is when it has no oil inside. Next, to be on a safer side, it’s best to unplug the spark plug. Now, you need to use a socket wrench to unbolt the mounting. If your lawnmower is threaded reversely, you need to rotate it clockwise to loosen the bolt. 

How To Install New Blades?

Install New BladesBuy the replacement blades and place them in the place of the old ones in an appropriate direction. Line the blades in the same manner as they were lined up before and reinstall the washers and nuts back in their place. Check if they are correctly placed by starting the mower, if they cut the grass evenly then they have been installed correctly. 

Which Way Does a Lawnmower Blade Turn?

Lawnmower BladeIt is important for you to operate the lawnmower else, or adequately your mower will not cut the grass the way it should. If you are opening it to sharpen or replace the blades and install the blades incorrectly, you might end up damaging the mower. For you to remove and install the new blades correctly, you need to understand the functioning of your mower. You need to know if your blades are threaded normally or if they are reverse threaded. As mentioned above, most of the lawnmowers are reverse threaded, meaning they turn clockwise. However, if you are not sure as to how your mower rotates, check the position of its discharge chute, and if it is on the right side, the blade turns clockwise, and if it is angled on the left side, your blade moves counterclockwise. 

Do All Mower Blades Turn Counterclockwise?

All blades don’t need to turn counterclockwise. Generally, all rotating objects do turn counterclockwise, but many of the lawnmowers turn clockwise; that is to say, they are reverse threaded. Reverse threading ensures that the blades function properly, and the nut bolt doesn’t loosen up and stays tightened. So you need to check for yourself as to how your lawnmower functions. 

So these were all the facts about the lawnmower and its blades. This article has tried to give detailed information about whether lawn mowers are reverse threaded, how they function, how to remove them properly and install a new one. 

I hope this article would have helped you to understand how to correctly sharpen or replace your lawn mower without damaging the blades.

Susan M. Heckart

Hi, everyone! I'm Susan Heckart, an interior designer and photographer who loves learning about new home appliances and gadgets. In my blog posts, I aim to provide information to help others like me make the most of their homes. Whether reading articles in a cafe or exploring new design ideas, I'm always keen to learn more about how to make our homes more functional and beautiful. Thanks for following along!

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