Uncut grass blades

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  #1  
Old 08-07-06, 10:15 AM
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Uncut grass blades

My lawn mower does not cut all grass blades. Every foot or so it will leave couple of grass blades uncut. I multch grass clipping. My lawn mower leaves some of those cut grass blades as it is (i.e it doee not shred those clippings in small pieces. This looks very ugly. What could be reason for this?

Am I running my lawn mower too fast? Too slow? Could mower blade be worn out needing sharpening?
 
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  #2  
Old 08-07-06, 10:28 AM
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A dull blade is my first thought, but mowing too fast will also produce spotty uncut areas. Is this a riding or walk-behind mower?
 
  #3  
Old 08-07-06, 10:35 AM
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This is self propeled walk behind mower.

Too fast...does it mean walking too fast with lawn mower (too fast leaner speed) or does it mean too fast rotating blade?
 
  #4  
Old 08-07-06, 11:00 AM
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Walking too fast. The faster the blade rotates, the better cut you get. If you're walking behind, it's likely a dull blade. Usually going too fast only happens on riding mowers.
 
  #5  
Old 08-08-06, 05:56 AM
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My rider does the same thing, yogi, even with sharp blade and slow speed. I always see some blades that I have to hit a second time, usually the tall seed head shoots on the bahiagrass.
 
  #6  
Old 08-08-06, 06:16 AM
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Another thought is how often do you mow the lawn? Let's say your lawn is 4" or over, you will need to mow over the same path. I usually mow one way and then over again another direction...like a checkerboard pattern.
 
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Old 08-08-06, 06:24 AM
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I doubt a dull blade will cause it.I have a lawnmower that who knows when the blade was last shapend.Still cuts and bags and mulches when the bag gets to full.But everymower is differnt.Its a older murray convertible mulcher
 
  #8  
Old 08-08-06, 06:31 AM
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But...to add to that...Depending on the type of grass you have and size of your lawn and the mower you have, always check your blades and find out how often you should sharpen them. Using a dull blade will not cut your grass...it tears it.
 
  #9  
Old 08-08-06, 06:47 AM
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Exactly, a dull blade on thick grass will tear the grass, and tend to "skip" over a few blades.....
A sharp blade would slice right through, whens the last time the blade was ever sharpened or replaced? they have to every once in a while, I usually just take a peak at em, every once in a while to see if they need a sharpen or not.
 
  #10  
Old 08-08-06, 07:47 AM
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I will sharpen the blade and post the results. My blade was not sharpened since I bought it....in 2000....6 years ago
 
  #11  
Old 08-08-06, 07:52 AM
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Most recommend sharpening the blade once or twice every season. Obviously, you're a little overdue.
 
  #12  
Old 08-08-06, 12:17 PM
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Just don't forget to balance the blade after sharpening.
 
  #13  
Old 08-08-06, 12:28 PM
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Originally Posted by goldstar
Just don't forget to balance the blade after sharpening.
Oh, absolutely! I apologize for failing to mention this, the blade must be balanced before reinstalling on the mower.

http://doityourself.com/lawn/sharpmowerblade.htm
 
  #14  
Old 08-08-06, 12:37 PM
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I take my blades to a place about a mile from me.The charge $5 if its a flat blade $7.50 if its a mulching blade.If you do it your self and don't have a bench grinder or atachment for your handled drill you can use a flat file or a chainsaw file.
 
  #15  
Old 08-08-06, 07:16 PM
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Ouch, 6 years!!! go ahead and replace the blade.
As for sharpening prices, I can get mine done for 3 bucks, or a bud to do it for free...... the free is always better..... hate I forgot about the balancing!! even with a new one, one quick way, take a nail, put it in a post and hang the blade by the bolt hole and sharpen on either side it goes off to till its level.
 
  #16  
Old 08-09-06, 07:34 AM
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[QUOTE]
Originally Posted by v8driver
Ouch, 6 years!!!
I've gone longer then that and it still cuts.try 10 years
 
  #17  
Old 08-09-06, 08:31 AM
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Lexmarks567, Clarification please. If you are saying a blade can be good for 10+ years with regular sharpening, I agree. If you are saying that it still cuts after ten years without sharpening, I think it's just beating the grass into submission.
 
  #18  
Old 08-09-06, 10:24 PM
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10 years on a blade with no sharpening? That's bad for the grass, cuts worse, and is harder on the engine.
 
  #19  
Old 08-10-06, 02:36 PM
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Being that old and never having been serviced, I'll bet you need to replace the blade, not sharpen it!!! How's your oil condition? Spark plug? Air filter? Cooling fins? Belt? Cables? Grass build-up under the deck? Yipes, six years, without service? Shame, shame.
 
  #20  
Old 08-10-06, 02:54 PM
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I did not say that engine was never serviced. Engine was serviced, cleaned once a year. Oil & airfilter changed. It just that blade was not shapened for 6 years.
 
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