Experienced gardeners share their insights in answering this question :
You didn’t say if this is a 3 blade system. if it is then when you had the blades sharpened last time someone forgot to replace the washer on the bolt. the washer may be small but it makes a huge difference when you mow

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.
Rows or streaks of uncut grass in your lawn may be the result of your lawnmower`s cutting blades being dull or otherwise damaged. Dull blades are the result of normal wear and tear from mowing. The blades can be sharpened with a bench grinder by you or a professional.
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.

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.
Various issues can make a lawnmower not cut grass or make uneven cuts. These include a clogged deck, unbalanced wheels, bent or blunt blades, and a slow engine speed. Fortunately, you can examine your mower to pinpoint the exact problem and fix it yourself.
Cylinder lawn mowers all have front and rear rollers. It is the roller and not the cutting action that produces the lawn stripe. Therefore a rotary mower with a roller will produce stripes. `To stripe or not to stripe` is the question; the answer is it`s up to you and personal taste.
What Are The Causes of Uneven Cuts from Your Lawn Mower. 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.
Step One: Don`t Mow A Wet Lawn

When there is moisture the clippings will stick to the lawn mower blades and deck making clogs inevitable. This of course leads to large clumps of grass all over the lawn. These clumps may even get stuck in the lawn mower, leaving you no choice but to work out the clogs yourself.

The reason why your mower leaves grass trail behind, is that there is are some mowing errors, or it has poor mower blades, or bent ones. This would also be due to improper mowing practices, using the wrong blade size, or it has a jammed deck.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

A belt guard broke off i need to know where it goes and if i could weld it on if not where cold i purchase one

Read Full Q/A … : Garden

I had hit a somewhat hidden stump on the lawn..bending the blade. Took the deck off and replaced the bent blade. Put the deck back on and now the cut seems uneven. It appears that the deck is now uneven. I attempted to follow the directions for a side-to-side leveling. Started with trying to measure the blade height and am struggling with getting to a spot where I can measure the blade on the left side. By looking at the deck, it appears to be uneven. I am struggling with being able to raise the left side of the deck.
ANSWER : I’ve only had luck removeing the deck, turn it upside down. Measure blade, mark, remove blade, insert large pipe over spindle, bend in direction. Re-install blade, and do it all over and over till straight. Measure in several locations.

Read Full Q/A … : Garden

Blades disengaged while cutting Blade lever has
ANSWER : A new belt might be the way to go

Read Full Q/A … : Garden

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

Read Full Q/A … : Garden

Planted salad greens 2 weeks ago, new leaves very pale, with dark spots, some have brown edges
ANSWER : Not enough sun and too much water does this

Read Full Q/A … : Garden

Deck is cutting uneven – Craftsman 42 in. Deck 19.5hp Lawn Tractor
ANSWER : First check tire pressure if even check to see if deck hangars are still conected to deck if somay need to be adjusted only one side is adjustable.if changed blades make sure one is not up side down, also make sure blade spindles bearings are good

Read Full Q/A … : Garden

RGS650 Reversing Camera Pack view shows picture upside down when reversing and i have lost the instr
ANSWER : Camera comes up stop all the time how do i fix

Read Full Q/A … : Garden

How do i adjust deck belt tension – Poulan 38-Inch Steel Deck 15.5 HP Briggs & Stratton I/C Engine With 5 Speed
ANSWER : Most cases there is no adjustment to the belt if it is mounted correctly it tensions itself, if you need more adjustment you might need to just change belt because your other one is most likely stretched.

Read Full Q/A … : Garden