Does the cutting edge of a mower blade go up or down?

Sharp Side of Your Blade Closest to Ground

So when installing your blade, you want to make sure these “wings” are pointing upwards towards the underside of your deck, and the sharp side of the blade is the side that is closest to the grass.

What happens if you put lawn mower blades on upside down?

Mower blades have a cutting edge at each end. The key to replacing the mower blade is installing the new one properly. It is common to install a blade upside down. When this happens, the lawn mower will not cut correctly, or it could damage the mower.

What are the holes for on lawn mower blades?

If your mower blade has “outside holes”

Many push lawn mowers and some other types of mowers utilize these outer holes to ensure the blades do not hit each other while in use. Many commercial lawn mowers use 2 or 3 blades, not just 1 blade.

Do mower blades have to be lined up?

Aligning the Blades

If you have a manufacturer’s manual, read it first. The problem could be related to the tire pressure, which can throw off the weight of the mower deck. Some mower manuals, like this one from John Deere, make a point of saying that mower blades need to be aligned perpendicular to one another.

Why does my lawn mower cut better backwards?

Push Mowers

A push model that mows grass better when pulled in reverse than pushed forward may need to be sharpened. The forward motion of the wheels is what turns the interlocking blades and, when operated in reverse, the blades turn in reverse.

Which side of mower blade faces down?

To determine which side of your lawn mower blade is up, first figure out which side is the sharp cutting edge, and which side is the blunt edge. Look for a sticker indicating which side goes up and which side faces downward. The cutting edge should face the grass while the dull edge should face the deck of the mower.

How do you know which side of a lawn mower blade is up?

The most common and easiest way to tell which side of your lawn mower blade is up, is to look for the label. Most manufacturers will stamp at least one side of the blade with a direction label. These can say things like: “This Side Up”, “This Side Down”, or “This Side Toward The Grass”, depending on the brand.

How tight should a lawn mower blade be?

Generally speaking, the blade should be tight enough so that it doesn’t move around on its own, but you should be able to move with your hand by applying some pressure. The manufacturer should provide a proper tightening level expressed in foot-pounds, commonly found in the mower’s manual.

What angle do you sharpen lawn mower blades?

Lawn mower blades come from the factory with a specific angle on the angled edge. This angle should be kept as you grind your blades over time. The most common lawn mower blade angle is 30-35 degrees. When sharpening your mower blades it is important to keep this 30-35 degree angle over time.

Do mulching blades go up or down?

1. Look at both sides of the mulching blade. Most blades have the word “bottom” stamped on them, or they have a model number imprinted onto the underside. Whether a word or a number, that side of the mulching blade must face the ground after it is installed and the mower is standing upright.

What is a mulching mower blade?

Unlike standard mower blades, mulching lawn mower blades are designed to push grass clippings into the bagger with more airflow. Many mulching blades also have teeth that slice through grass clumps, dispersing cut grass into the bagger or onto the ground so they can make their way back into the soil.

What do the numbers on a lawn mower blade mean?

“Overall measurements” include the blade’s length, width, and thickness. Regarding the blade’s holes, the number of holes, the shape of the holes, the size of each hole, and the distance between the outer holes must be known. After-market mower blades are listed by these measurements.

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