If you own a lawn and are constantly mowing it, it is important that you make sure your lawn mower blades stay sharp all the time. This is largely because sharp lawn mower blades are ideal for a healthy lawn since they allow for a clean cut on the grass that leaves it healthy. Blunt blades tear the grass and leave it open to mold and parasites. So, how should you sharpen your lawn mower blades?
What you are going to need
To be able to properly sharpen your lawn mower blades, you will need a few items that include a vise, a sharpening file, a socket or power outlet, a couple rags and a wench. You might also need WD-40 lubricant, so it is important to keep a can close.
How to sharpen lawn mower blades
Step 1 – Remove blades from lawn mower
Since you cannot sharpen the blades while they are still fastened, you will have to remove them from the lawn mower. They are located on the under side of the mower, so go on and tip it on its side. Lay rugs under it so any fuel or oil that may leak may be absorbed. Unfasten the blades using the wench, then proceed to set the mower back on its feet.
Step 2 – Sharpen the blades
Secure the blade on a vice to keep it completely immobile when you are sharpening it. Grab your file and carefully file each side of the blade, making sure you maintain the cutting angle for optimal performance. Keep in mind that a file is the best tool for the job since it leaves a smooth edge that is very sharp. A grinder, which is used by many people, may permanently damage your blade as it produces loads of heat. Use a file that is at least 10 inches long. In case you are filing mulching blades, you might need several files that will be able to work the angles.
Step 3 – Confirm the blade balance
Set the blade on a nail in the wall using the center hole. If it tips to one side, file the said side a little longer until the blade balances. Poor balancing would cause your lawn mower to heavily tremble and vibrate when it is working, and you may end up damaging the blade shaft and bearings.
Step 4 – Reinstall sharpened blades
Go on and tip the lawnmower on its side again, making sure to do so with rugs beneath the machine. Fasten the blades properly, making sure that the bolts are tight enough to prevent any accidents from occurring. Your lawnmower is ready for work.
The above indicated method is largely relevant for walk behind mowers that have one blade. Larger mowers may require a different method of removing and reinstalling blades.
Conclusion
There you have it. Sharp lawn mower blades are always ideal for a healthy lawn, and while filing may be cumbersome, you will find that it is well worth it.
FAQs
Can I sharpen my blades using a drill bit?
Yes, you can. It is fast and safe for the blades.
Should I disconnect the spark plug wire before removing the blades?
Yes, you should to avoid having it touch the spark plugs.