First, the blade pulls the grass up and cuts it. Then, clippings are sucked inside the deck and are chopped into tinier pieces. Finally, the blade’s innermost curve produces air pressure to blow the small clippings out, where they are used to feed the soil.
How do lawn mowers cut grass?
Instead of cutting grass like scissors cut paper as a reel mower does, the rotary mower spins a horizontal blade around fast enough to cut the grass as it hits it. The blade sits within a casing called a deck, which keeps the grass and other objects from flying in all directions when struck.
Why are lawn mower blades shaped the way they are?
With a more vertical swoop shape, high lift air underneath the mower provides the great suction power blade. This fan-like suction makes high lift blades ideal for bagging purposes. It also makes bagging more efficient, and reduces the chance for the cut grass to get clogged up in the mower’s cutting area.
Why is a lawn mower blade curved?
The curved surface and increased cutting edge allows the blade to cut the grass and bring it into the deck where it is cut several more times before falling back onto the lawn in much smaller pieces. The curved design of a mulching blade does not provide the same type of lift and discharge power as standard blades.
How does a mulching blade work?
Mulching mowers not only create a stream of air that directs the grass up into the mower blades, but once the grass is cut, the clippings hit the blade multiple times before they go back onto the lawn. This is in contrast to other mowers which direct the clippings out the side or into a bag.
How often should lawn be mowed?
The rate of grass growth and desired height of your lawn determine how often you need to mow. Typically, mowing once a week during the growing season should suffice to keep your lawn healthy. The rest of the time, you can reduce the frequency of cutting to every other week, as necessary.
Can I put 2 blades on my lawn mower?
A mower with two blades has a significantly wider cutting width. If you own a large property with hills and berms, or if your grass is often uncontrollably long, a mower with two blades is your best choice. … A single-bladed mower has the smallest cutting width available.
How do I know what mower blade I need?
The easiest way to find replacement lawn mower blades is with the OEM number. The OEM number is the numerical part number of the blade assigned by the manufacturer. In most cases, just typing this number with the manufacturer name into a search engine or online store will be enough to bring up some promising results.
What does a notched mower blade do?
A notched airfoil is Exmark’s standard blade. This blade produces a lot of lift and moves a lot of air. The notched airfoil blade produces maximum discharge velocity and is ideal for heavy, thick, hard-to-lift grasses.
How sharp should mower blades be?
Mower blades should be aggressively sharp, but not as sharp as a razor’s edge. You should be able to touch the blade with your hand without getting cut. Contrary to popular belief, a lawn mower blade with a razor sharp edge will not cut grass better.
Can I mow with a bent blade?
If the mower blade gets bent, it will no longer spin correctly on the lawn mower. Letting a lawn mower run with a bent blade can severely damage the engine. The typical solution to this problem is to replace the blade with a new one from your local home improvement store.
How often should mower blades be sharpened?
Typically, most home owners just need to sharpen blades twice per season. One good sharpening at the beginning of the season and one around the middle of the mowing season should be good. If you mow over debris such as sticks or rocks, however, you may need to sharpen your blades more than that.
What is a 4 in 1 mower blade?
Eliminator Blades cross cut for quick shredding and mulching. Replace your mower blade with a 4-in-1 Eliminator blade for Mulching, Discharge and Bagging plus shredding to ensure a clean, healthy cut for beautiful lawn results.
Can you sharpen mulching blades?
Note: Sharpening mulching blades is sometimes more difficult. Mulching blades may have longer or curved cutting edges, and you may need several types of files to sharpen them.
How do you mow with mulching blades?
How to Cut a Lawn With a Mulch Blade
- Start at the top left corner of the lawn, and move down toward the bottom left corner. …
- Mow the second row of lawn the same way as the first, mowing another outline inside the outer ring. …
- Continue mowing in concentric circles or rectangles until you reach the center of the lawn.
How do I know if I have a mulching blade?
The easiest way to tell the difference between mulching and standard lawn mower blades is to look at their shape. A standard blade will have fewer cutting edges and a straight shape, while the mulching blade will have several cutting edges and a curved shape.