Go Back  DoItYourself.com Community Forums > Garden and Outdoor Center > Lawns, Landscaping and Outdoor Decor
Reload this Page >

Clarification please on Lawn Mower Blade Sharpening

Clarification please on Lawn Mower Blade Sharpening


Old 01-23-11, 07:50 PM
Thread Starter
Join Date: Apr 2009
Location: USA
Posts: 7
Clarification please on Lawn Mower Blade Sharpening

This past weekend, I took my lawn mower into a repair shop to sharpen the blade. But I am concerned that the sharpening job wasn't done properly. Since this is the first time that I have ever needed to get this blade sharpened, I want to make sure that I am not just imagining a problem.

The mower is a Craftsman 21" mulching mower with bag. I can't find a good pic of the actual blade online, but it looks like a standard rotary blade with just a couple of extra curves along the leading edge as you approach the center of the blade.

Here is my concern: The outer-most edge of the blade, the section of blade that is closest to the ground, was not sharpened at all. It wasn't cleaned, sharpened, nothing. The outer-most 2"-3" of the blade is dull and almost blunt. And since this particular section of the blade is the section that is closest to the ground (and is also the cut-point from which I have based my cutting lenghts) I am concerned that I will now have some sort of uneven cutting or get torn grass.

I am giving the lawnmower shop the benefit of the doubt because the rest of the blade seemed so nicely sharpened. I just question whether this style of mulching blade is SUPPOSED to be blunt at the very edges. Is it a safety-thing where the edges are more blunt to prevent chips/cracks along the blade? Or does the blunt edge help direct cut grass toward the bag catcher?

This is a mower shop that I have never dealt with previously, but they have been in business for a while. So I tend to believe that this uneven sharpening was for a reason, but I can't find anything online to calm my concerns.

Anything info or advice you can offer would be greatly appreciated. Thanks!
Sponsored Links
Old 01-24-11, 04:35 AM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,968
I know it's too late, but if you want to be doubly sure, and we can't see the blade, why not pick up a new one at the Sears store (probably $10) and compare it to the shop results. If satisfactory, you have a spare blade for when yours gets dull. If not, you can take it and the mower back to the shop for a rectification, and STILL have a spare. I keep 2 extra sets (6 blades) for my Kubota ZTR just for the convenience of not having to sharpen them at that moment. Change them and sharpen at a later date.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes