John Deere

Recently my husband run over a large piece of metal & bent the deck & right blade. We replaced the right blade & straightened the deck but the mower now leaves a strip of uncut grass in center & bent over semi-cut grass on the right. Do I need to buy a new deck or is there something I can do to correct the problem?
Experienced gardeners share their insights in answering this question :
Hi, this may sound obvious but make sure the new blade is the same type as the old one and make sure it is not fitted upside down. Spin the blades and make sure the tips are level with each other, this will tell you if the deck is straight where the blade spindles mount. Regards Phil.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Also known as streaking, this problem occurs when strips of grass are left uncut by your lawnmower. Although there are several reasons this might be happening, it is typically caused by blade problems or user error. Replace warped or damaged blades. Make sure blades are the correct size and are installed correctly.
The blade belt spins the blades to cut the grass. A worn or broken drive belt won`t spin the cutting blades so your mower won`t cut the grass. A worn blade belt can also cause mower deck vibration or uneven cuts. Examine the blade belt regularly and replace it if it`s worn or broken.
High spots could be as simple as an engine running too slowly to properly rotate the blades. If they are turning too slow, grass will be missed, and your engine will be under undue stress. After adjusting the throttle, start mowing, and pay attention while you push the equipment.
A dull blade is the number one reason for leaving uncut grass. The blunt blade will damage your lawn in no time at all; it tears the grass and leaves a jagged edge which turns the grass tips yellow. The recommended way to repair the yellow grass damage – regularly cut with a sharp lawnmower blade.
The causes of uneven cuts from your lawn mower are worn or dull blades, incorrect tire pressure, bent blades, or a clogged deck with grass. Also, due to the deck not being leveled, having an uneven spindle, or the belt may be in bad shape or at low speed.
An unbalanced blade spinning that fast will cause a significant amount of vibration, which will put stress on yout blade shaft, spindle, and even the engine. So if you want to get the most life out of your mower… keep the blades balanced!
But how does a lawn mower actually cut grass? Unlike the most common cutting tool, scissors, lawn mowers don`t use two opposing blades to create a shear stress at a localized point. They instead have a rotating blade inside a metal housing case.
This issue may happen if the machine is faulty, the height between the mower deck and the blade is different, or you cut too much grass. While you may find moving in reverse easier to mow the lawn, it may cause various problems related to safety.
For most effective results, a lawn mower deck should have a pitch, or height difference of 1/8-inch to 1/2-inch between the front of the deck to the back of the deck.
When the lawn is mowed high, there are plenty of leaf surfaces available to keep the plant healthy. This allows the grass to build up its food reserves and grow better roots, which means that the lawn will be greener and healthier.
Vary Your Mowing Pattern

Each time you mow, do it in a different direction. If you always cut your lawn using the same pattern, not only will you end up sending your brain straight to snoozeville, but your grass will start to lean in the direction you mow and you may even end up with ruts in the lawn.

A dull blade can make your lawn appear yellow, brown and raggedy. A dull lawnmower blade may even pull up portions of the grass because it actually pulls on the entire plant instead of slicing through the blades of grass cleanly.
Your blades are too blunt.

If you notice lines in your lawn after you mow it, you should check to ensure that your blades are sufficiently sharp for cutting. To make sure that your blades are suitable, you should sharpen them between once and twice per season.

The straw-colored wheel track patterns occur when drought-stressed turf is mowed — essentially bruising the turf leaf blades. Unfortunately, this bruising kills the leaf blade, often all the way to the ground.
The “stripes” that you see on a lawn or athletic field are caused by light reflecting off the blades of grass. They have not been cut at different heights nor are there two different breeds of grass. The “stripes” are made by bending the blades of grass in different directions.
The “stripes” that you see on a lawn or athletic field are caused by light reflecting off the blades of grass. They have not been cut at different heights nor are there two different breeds of grass. The “stripes” are made by bending the blades of grass in different directions.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

I have a 19hp craftsman 42 deck. It has two blades. It does not cut the grass in the center. It leaves a strip uncut. What adjustment should I do
ANSWER : You may be running too fast on ground speed for the mower deck to cut completely. It may be time for some new blades. The blades may be worn down to where they are shorter than when they were first put on.

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42 inch craftsman. Replaced bades and now have a row of uncut grass in the center of cut.
ANSWER : I don’t have a solution.

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How long does Roundup take to kill weeds – Roundup "" Weed & Grass Killer
ANSWER : 5-7 days

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42 inch mower cuts uneven, what is the problem?
ANSWER : Several things here could be the problem. Check to see if mower deck is level, measure distance on both side on a level surface. Check tire’s for low air. If you’ve replace the mandrel’s lately, some have a left & right side & if not put back together properly this will cause uneven cutting

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I have the Gh1000 Grass Hog and when using it, the cutting trimmer line went away. Help!
ANSWER : Replace the line….It is a consumable part. It that your question??

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Mower leaves a uncut srip of grass through the center of the mow area!
ANSWER : The blades need inspected and sharpened,one could have a bent tip or just dull,if youve had someone else pull them off and reinsall them already check to make sure one of them isnt installed backwards,dont laugh,Ive seen it happen.

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Uneven grass cutting
ANSWER : I have seen dull blades, blades not installed right and an un-level deck cause that.Hope this helps.

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My John deere LT 160 leaves a strip of uncut grass on the left side even though the mowing deck wnet over it.
ANSWER : Check the blades, I expect that you will find that they are wearing out.

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