First determine whether the blades on your mower are blunt..
The biggest indicator of blade wear is the rough unevenness of the cut grass after mowing. That’s because a boring knife tears the grass and doesn’t cut it. Broken grass is easily recognizable byrough, dead edges and often with dead spots because of the increased risk of infection. Other signs of leaf wear are difficulties in mowing high or wet grass. A sharp blade leaves the grass completely green with clean cutting edges for a greener, healthier lawn. If the mower does not cut the grass properly, it may be time to replace or sharpen the blades.
Mower with sharp blade
Is it time to change the blades?
It is difficult to answer this question because there are many factors involved in determining whether a knife can be sharpened. The first step is to remove the blades from the mower. Without proper precautions, this process can be dangerous. So start wearing thick gardening gloves to avoid cutting your hands off. Below is a brief description of how to remove the blades from the mower.
Step 1: Pull out the spark plug.
Read the Owner’s Manual for your specific model and locate the position of the spark plugs. Disconnect the spark plug wire to prevent the engine from starting if you try to remove or reconnect the blades. This has to be done while the mower is still on the four right wheels.
Step 2: Install the mower
Tilt slowly so that the air filter is on top of the engine and oil tanks. If the mower is tilted in the opposite direction, gravity will release gas into the filter, damaging it and potentially causing the filter to fail. Keep a towel or newspaper under a tilting lawnmower to catch dripping fluid.
Step 3: Mark the sheet
From this position you must have access to the bolt that holds the blade in place. But before you start removing, use the marker to mark the knife face up. This is important so that you know which way to go when you move the blade. The return blade cannot mow, so make sure you do not miss this step.
Step 4: Removal of sheets
Use the wrench to turn the bolt counterclockwise until the knife falls. Keep your free hand firmly on the blade so that it doesn’t fall and hurt you. After removing the knife, you can determine whether it needs to be replaced. An old screw that has not been maintained probably rusts firmly on the nut and is difficult to remove. In this case, try to tighten a metal or wooden rod underneath the blades to form the handle. Also try to apply machine oil or grease type WD-40 to bolts and nuts.
Sharpen or replace?
If you are a beginner, it can be difficult to determine with the whether the blades on your lawnmower need to be replaced. Decide based on the following criteria, but if you are not sure, take the knives to your local headquarters or a similar store that will inspect your knives free of charge. The following characters are direct indications of a damaged sheet that needs to be replaced:
- Cracks: This is the simplest sign, because it is also understandable for beginners. Any number of cracks is dangerous for the mower and the operator. These knives must be replaced in any case. 1С8
- Fleas: Microchips along the leaf edge can be formed from fine pebbles, twigs and many other deposits of ordinary lawns. Different small chips are usually not a problem and can be shredded with thefilter. Several larger chips indicate that the knife needs to be replaced.
- Folding: The dented blade is no longer straight and takes on a curved shape. Place the knife on a flat surface to see if it is still straight. The serrated blade is unevenly distributed and the crop is not mown efficiently.
- Thin edge: The opposite side of the sharp edge is called the dragging edge or aileron. The new blade will have a thick fin that is slightly curved upwards to create buoyancy. Over time, the fin wears off and becomes thin and delicate. If your aileron is thin and eroded, it may be time to replace theblade.
If the knife is worn out and needs to be replaced, read our article on chopping knives. It contains important information about the different types of sheets and the specific functional characteristics of each sheet.
How to sharpen the lawn mower blades
To sharpen the blades of your lawnmower you will need a vice and a bastard trimmer. Start by pushing the knife into the vice with the edge facing outwards so that it is easily accessible. Tighten the vice and tighten the knife. Hold the filter with one hand on the handle and with the other hand on the other side. Determine which side of the cutting edge you need to cut by looking at which side the angle originally stood. The side of the edge that is flush with the knife is not the input side. Move the file to the top of the edge with a drag and drop motion. Remember that it is very important to submit applications in one direction. Separate the file so that it is parallel to the original cutting edge. Use long pressure wheels to feel the steel grinding. Continue sharpening the edge until it is as sharp as an oil knife – the sharpest edge wears much faster and is not very useful. 1С8
If the use of the filter is outside your comfort zone, we recommend that you try the lawnmower. They are inexpensive and easy to use and have a design specially designed for beginners. They can be ordered online or are available in most home stores. We recommend…
Scissor mower 50603 Smith
This is the best lawnmower knife sharpener we’ve found in our research. It is designed to sharpen dull knives in a few quick movements and will greatly reduce the time needed to sharpen knives. Thanks to the large protective cover and ergonomic handles, the Smith 50603 knife sharpener is easy to use, even for beginners.
Take yours now.
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