Why do I need to sharpen my lawn mower blade? When you mow your lawn with a dull lawn mower blade, the grass doesn’t cut. It tears. The jagged edge of a torn grass blade allows diseases to enter the ...

No matter what type of lawnmower you own, it's important you keep that blade sharp. Otherwise, you risk yanking your lawn instead of slicing it cleanly and healthfully down to size. A sharp blade also ...