Home Improvement

Which way should lawn mower blades face?

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 if mower blade is upside down?

It's to prevent the Installer to put it on backwards see how that's kind of beveled see how the top blade where the number is stamped see this Park.

Does it matter which way a lawn mower blade goes on?

One of the most critical is that the blade just won’t work if it’s facing the wrong direction. That’s because the cutting edges on your lawn mower blade are designed to only cut in one direction. If you accidentally flip the blade when you install it, the cutting edges won’t ever have an opportunity to cut your grass.

What is the correct way to install a lawn mower blade?

That edge will always be bent towards one side of the blade as. You can see here it's bent towards this side like this you always want that bin to be pointed towards the body of the lawnmower.

Which side of mulching blade goes 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 does grass side mean on a mower blade?

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.

Why does my mower leave a strip of grass in the middle?

A strip of uncut grass left in the middle of mowing rows could signal that your lawnmower’s blades are unbalanced or that one or both of them was installed the wrong way. Lawnmower blades are beveled and specifically designed to attach in a certain fashion.

What happens if you turn a lawn mower upside down?

Possible cause 1: In some models, when you tip the mower, fuel can leak into the carbon in the cap, which restricts the venting of the fuel system. This can cause the engine not to start, or only run for a few minutes, then quit. POSSIBLE SOLUTION: Leave the cap to dry out or replace with a new cap.

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.

How do you align a riding lawn mower blade?

Turn the mower blades slowly until one points forward and one points backward. Leave this as is and place a wood block inside the deck next to the edge of a blade that has to be aligned. Turn this blade just a bit to wedge it tight. Using an adjustable wrench, remove the blade’s screw, spline washer and spring washer.

How tight should lawn mower blades be?

Or if you know what blade model you have, you could look this up online. Between 38 and 50 foot pounds of torque is standard for walk-behind mowers. Between 70 and 90 foot pounds of torque is the norm for riding mowers.

Do I really need a torque wrench for lawn mower blade?

A torque wrench is critical for jobs like lawn mower blade fitting and flywheel fitting, as you already know, overtightening these components could cost you an engine.

How often should lawn mower blades be replaced?


For the average homeowner, a good rule of thumb is to replace your mower blades annually. Sharpening mower blades on a regular basis will prolong the life of your blades. Be sure to take protective measures if you sharpen your blades at home – wear protective gear and disconnect the spark plugs.

Should lawn mower blades be sharp?

How Sharp Should Your Mower Blade 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.

What angle should lawn mower blades be sharpened at?

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.

Does wet grass dull mower blades?

Cutting wet grass can dull the blade more quickly. Clean blades thoroughly before and after mowing a lawn when wet to keep the cut as sharp as possible. Stop and turn off the mower to check your blades as you go along, to clear any clogs that may form on the underside or at the side discharge.

How many times can you sharpen a lawn mower blade?

In general, sharpen twice per season or after 25 hours of use to keep your blades in good shape. Also, sharpen the blades after hitting rocks. Stone can easily dent or nick the blades. The lawn itself can also hint when you need to sharpen your mower blades.

Is it better to sharpen or replace mower blade?

Lawn mower blades are built for durability and can usually be salvaged with regular sharpening. However, if you notice large dents and chips on the edge that aren’t smoothed out with a blade sharpener, it’s time to invest in new blades. Yard debris can also wear down a blade over years, resulting in thin weak metal.

Do you sharpen both sides of a lawn mower blade?

Always sharpen from the top side of the cutting edge; this will give you the longest-lasting edge on the blade. Note: The file cuts in one direction only, on the push stroke; you’ll feel it bite into the steel on the blade.

How much does it cost to have lawn mower blades sharpened?

Depending on the type of your mower, you can expect to pay anywhere between 20 dollars to 60 dollars. If it’s a reel lawn mower you might not even need to take the blades off the mower and sharpen them while they’re attached.

How long does a lawn mower blade last?

On average, most mower blades last up to hours under normal conditions. The number of hours can be as high as 400 if you use high-quality blades. When blades get dull, you can sharpen them with a grinder or metallic file, but the blade sharpening will only work for 2 to 3 times.

Does Ace Hardware sharpen mower blades?

We sharpen a wide range of edges, from lawn mower blades to paper scissors, we’re here to make your cutting experience safe and easy.

How do you sharpen a lawn mower blade without removing it?

How to sharpen lawn mower blades without removing them?

  1. Collect the required tools.
  2. Seal the gas tank. …
  3. Tilt the mower and place the wooden block under it on the other side to give it support. …
  4. Clean the blade with water and a steel brush.
  5. Use the angle grinder or flat-file to sharpen the cutting edge slowly.
  6. Lower the mower.

Can you sharpen mower blades with sandpaper?

No, sandpaper will not work. Use flat file, but don’t get too much metal off – if you change an angle of the blade, your lawn mower will start vibrating, and ultimately be ruined.

How do you sharpen a push mower blade by hand?

Because you don't want those blades spinning anywhere near your hands. Now take a commons flat-head screwdriver and loosen the screws at the back tighten.