Last Updated on August 5, 2021 by Mark Brian
Maintaining a clean and healthy lawn in front of or within the house necessitates the usage of a lawn mower. Lawn mowers, like other equipment and garden tools, require regular care, maintenance, and replacement as time passes. Especially the mower’s blades, nuts, and bolts.
Do lawn mower blades have reverse threads?
No. lawn mower blades themselves are not reverse threaded. But! Yes, most of the accessible lawn mower (like, reel mowers, self propelled, and riding mowers) blade nuts are reverse threaded to keep the blade in place on the engine’s drive shaft.
The nut will not extricate when the blade pivots or spins as a result of this. In any event, not all blades use a reverse threaded nut to connect them to the engine’s drive shaft.
Why is reverse threaded nut important?
The reverse thread aids in the blade’s securement on the drive shaft, preventing the nut from dislodging as the blade rotates. It’s important to remember that not all lawn mowers use a turnaround threaded nut.
Check for the Reverse Thread Blades:
If you want to stay on top of your maintenance, make sure the blade isn’t threaded in the wrong direction.
To determine if the blade is switch threaded, the bolt lock can be removed. Unbolting it is the first step in determining whether it is reverse threaded or not.
Main Rule while maintaining the blade:
As discussed, earlier the majority of the known lawn mowers are reverse threaded. Most of the bolts are standard fashioned, you just have to turn right to tighten whereas turn left to loosen.
In other cases, it may depend on the manufacturer company, either the mowers blade bolts are standard or reverse threaded.
Different Manufacturers Mowers Blade Reverse Thread:
Are John Deere Mower Blades Threaded Reverse?
No. The bolt that holds the John Deere mower blades in place is threaded properly. To repair it, simply turn it clockwise like you would any other bolt. To release it, turn it to the cleaned outside, or counterclockwise.
Are Cub cadet Mower Blades Threaded Reverse?
No. The bolt that keeps the mower blade in place is threaded correctly, according to the Cub Cadet website. That is, tighten it by turning it right (clockwise), and loosen it by turning it left (counterclockwise) (counterclockwise). Most of these bolts have a 5/8 inch string and must be torqued to 70-90 foot pounds.
Are Craftsman Mower Blades Threaded Reverse?
Yes. The bolts that hold the blades in place on a Craftsman mower are reverse threaded. Turn it to the left (counterclockwise) to fix the jolt, and to the right (clockwise) to release it (clockwise).
Furthermore, strictly adhere to the torque requirements for the bolts in the owner’s manual.
How to remove blades safely:
Step 1: Disconnect the Power Plug Wire:
First, the wire should be detached from the spark plug. If you’re using a cordless mower, you’ll need to remove the battery pack.
This may be done to prevent the engine from starting up while you’re working. It’s also a good idea to empty or drain the gas tank so no fuel leaks while you’re working on the blades.
To separate the spark plug, look for the spark plug boot, which is usually located on the front side of the engine.
Drag the boot securely away from the spark plug to separate it.
This stage does not necessitate the use of any additional tools; you can simply use your hands.
Step 2: Swerve the Mower:
Turn (tip) the mower on its side with the gas tank and air filter channel facing upward to prevent spillage and reveal the nut or bolt that connects the blade to the mower.
Step 3: Hold the Blade Out of Motion:
Wind a short square from the end of the blade to the inside region of the mowing deck to prevent the blade from rotating unintentionally.
To loosen the nozzle, spout, or bolt, use an arm and a bolt. Once you’ve removed any difficult fastenings, you may glue a longer bar over the handle to make it easier to use.
Step 4: Observe the Blade Position:
Remember to keep an eye on which side of the blade is facing down. It’s important to replace the blade in the exact spot as it was taken out.
To break the bolt out, you may need to use some force, but be careful not to slip and cut your hand. A breaker bar can be used to provide extra drive while safely releasing the bolt.
Step 5: Remove the Blade:
Using a 16mm socket, loosen the bolt by pulling it to the left (counterclockwise). The bolt head on your paddle moss, however, is maybe 1/2″ or 5/8″ inch depending on the manufacturer.
To get better leverage, utilize a larger socket clamp. The blade bolt rotates, but you may need to loosen it by holding the socket with your hand. As a result, you should wear gloves while working to protect your hands from harm.
Since corrosion might cause the nut to decrease, a proper tool should be used to remove it. Because of the size difference, the 16 mm socket can fit better for an 18-20 mm bolt. Then seek a rupture to aid leverage.
It’s likely that if the tension suddenly gets soft it strips the threads rather than releases the strain. In order to avoid skinned knuckles, gloves should be worn at all times. Finally, insert the substitute blade on the adapter of the blade to make the right side face up. Replace the cleaning machines in the correct order.
Fix the torque amount recommended in your customer manual at this stage and spin the hand blade clockwise or right. We hope that this work has been worthwhile. wish you wonderful mowing!
Step 6: Maintain and Clean the Bottom of the Mower:
After expelling the blade, wipe the mowing deck’s foot to remove any caked on flotsam, debris, jetsam, or grass. Use a putty cut with a tiny blade to obtain far better outcomes.
SAFETY: Things to Look for While Removing the Blades:
Tools to Remove the Blade:
If you want to remove the bolt nut, you’ll need a socket torque wrench. If you use a different type of wrench, you risk damaging the blade or the wrench. To avoid damage or injury, it would be great if you strictly adhere to all safety precautions when using your mower. This method can be used to remove mulching blade.
Removing the Blade:
Check to verify how the blade is installed in the mower before removing it so you can replace it properly. If the blade is removed or turned upside down, the mower will not cut your grass. You’ll have to start the removal process from the beginning as well.
Make sure the blade is in the same place as the one before it. After that, double-check that the blade of the lawn mower is level with the metal plate above the blade. Using your socket wrench, carefully remove the bolt nut.
Place the bolt nut in an easily accessible location. This is especially important because the nut is frequently a small component that might easily be misplaced or thrown away.
Replacing Mowers Blade:
Lawn mower blades are widely available at garden and hardware stores. At Home Depot, blades and kits run in cost from $10 to $50. An edge pack may be purchased for $45.00 on Amazon. Edge units from John Deere are available for $40.
Mowers Blade Life:
A lawn mower blade should last between 100 and 200 hours. High-quality blades can last up to 400 hours. On average, blades will need to be sharpened every 20 to 25 hours. These are merely average statistics, as a variety of factors might influence how long your edge will last.
Consider the size of your yard as well as running over stones and sticks. The normal wear and pressure on your lawn mower and blade all contribute to the length of time your blade will last.
Check your blade for wear and damage on a regular basis to keep it lasting longer and to anticipate possible injury.
It is turning around stringed in the case of a lawn mower, despite the fact that it is commonly seen the other way around due to the movement of the blade, which confuses the spectator.
The lawn mower threads with reverse threads are mostly the blade nuts, which are designed to protect the blades on the drive shaft of the IC motor.
This is frequently done to ensure that the nut does not get loose due to the rotation of the blade. To ensure the safety of the engine’s drive shaft, it is not necessary for all blades to use reverse threaded nuts.
Depending on the needed criteria and optimum functioning conditions of that specific lawn mower, they may employ a variety of techniques to maintain and secure the drive shaft.
Frequently Asked Questions (FAQs):
What size is the nut on a lawn mower blade?
To remove the hex nuts that are holding the blades, turn the 1 1/8 inch torque counterclockwise. Remove the old blades from the axles of the mower deck and discard them. In some situations, just tilting the mower to replace the blade is more convenient than removing the deck and replacing the blade.
Why are most blades on the lawn mowers reverse threaded?
Many lawn mower blades include a reverse threaded blade nut to keep it from becoming loose and sliding off. This is a basic security feature that protects both the lawn mower and you from injury.
How to remove stuck Nut bolts to remove the blade?
Applying lubricant to the hex nuts before removing them will help the procedure go more smoothly. If you don’t have a floor jack, lift the riding mower by driving up a slope.
How tight a lawn mowers’ blade bolt should be?
Using a torque wrench, tighten the screw or nut to the specified torque. On walk behind mower blades, the torque should be between 38 and 50 foot pounds. Riding mower blades should be linked to torque between 70 and 90 foot pounds.
Always read the instructions before changing the blades on your mower. Cleaning and maintaining the blade and nut bolts after each usage is a simple way to keep them rust free.
Furthermore, the majority of the mowers are reverse threaded, as is customary in the ancient days. However, before using, make sure the blade is securely fastened and the nut bolt is in the proper position to avoid any harm or injury.