QA

How To Sharpen Lawnmower Blade

How often should mower blades be sharpened?

This keeps your mower in good shape and helps to maintain a healthy lawn. However, if you mow more often, the blades will need more attention. On average, a mower blade should be sharpened after every 20 to 25 hours of use time.

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

How to sharpen lawn mower blades without removing them? Collect the required tools. Seal the gas tank. Tilt the mower and place the wooden block under it on the other side to give it support. Clean the blade with water and a steel brush. Use the angle grinder or flat-file to sharpen the cutting edge slowly. Lower the mower.

Can you sharpen blades while still on mower?

After all, even if the blade is a little dull, they’ll still cut grass, right? Well, yes, but that’s not the point. There are few different ways to sharpen lawnmower blades, including using a bench grinder, hand file, rotary tool, or angle grinder.

Should a lawn mower blade be razor 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.

How else can you tell when your lawn mower blades need to be sharpened?

You’ll know that you need to sharpen your lawn mower blades when the tips of your grass are brown and ragged. When this happens, your grass becomes less capable of storing water and more susceptible to disease. Some lawn mower manuals suggest sharpening or replacing blades after every 25 hours of use.

Should you sharpen mulching blades?

Mulching blades should be sharpened once to twice per season, depending on how often you use them. If you mulch the grass weekly or bi-weekly, it’s best to sharpen them twice. The constant cutting will take its toll on the mulching blades, dulling them quickly. Even if they’re sharpened, they won’t cut as well.

Do you sharpen both sides of 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 get a lawn mower blade 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.

Can you get mower blades too sharp?

When the blades are too sharp, they become blunt quickly, albeit that may depend on blade thickness. However, if you plan to mow a yard full of weeds and soft grass, sharpening the blades to an extremely low angle is the best thing to do. Keep the blades a little duller when working on the woodsy or rugged lawn.

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. Maintain your machine and sharpen mower blades regularly to deliver a clean, healthy cut.

How often should I change my mower blades?

A good rule of thumb for the average homeowner is to replace your mower blades annually. You may also think about replacing them if they become damaged. Dig up that product manual if you want a more clear-cut answer. Always make sure to take protective measures whenever sharpening your mower blades at home.

How long do mower blades last?

On average, most mower blades last up to 100 to 200 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.

What can you use to sharpen lawn mower blades?

The fastest way to sharpen a lawnmower blade is with a bench grinder. Wearing protective eyewear, earplugs, and work gloves, grind the edge of the blade against the spinning wheel. It’ll be loud and you’ll see sparks, but you’ll be able to sharpen the blade in a matter of a few minutes.

How do I know if I need a new lawn mower blade?

An aged, dull blade is still dangerously sharp. It’s more than two years old. As a general rule of thumb, a mower blade should be replaced every one to two years for safety and performance purposes. It’s bent. It’s dull and you’ve already sharpened it twice. There are dents, gouges and/or pieces missing.

What is the best angle to sharpen a lawn mower blade?

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.