Did you hear sharp noises coming from your lawnmower Trusted Source Lawn mower - Wikipedia A lawn mower (also known as mower, grass cutter or lawnmower) is a machine utilizing one or more revolving blades to cut a grass surface to an even height. en.wikipedia.org ? You might have recently hit a bump or a rock, and it caused damage to the machine. That might have led to a bent crankshaft, which is a common issue with lawnmowers. The problem is that you have no idea how to fix it.
Before you resort to repairing the unit, it’s important to determine the issue. But how to tell if the lawnmower crankshaft is bent? That’s what we are trying to discover in this article.
You might suspect something is wrong because your machine doesn’t act the same as before. For example, it might be vibrating while starting or during an operation, or you hear loud noises. The problem is that a bent crankshaft can lead to a variety of issues that could destroy your machine but also cause injuries. Here is what you should know about this damage and how to repair it quickly!
Is there a way to positively identify that a bent crankshaft is causing problems with your machine? You have two approaches to determining the issue. The first one is to look for potential symptoms, and the alternative is to check the crankshaft yourself. Here is a detailed explanation of the lawnmower bent crankshaft symptoms.
The problems you can notice come down to the following:
The next is a physical inspection, which means checking the crankshaft by yourself. Now, there are multiple ways to do this, and we’ll explain them below.
While you are assessing the unit, you might encounter other issues, too. If you have a problem with your blades, find a replacement among the best lawn mower blades to ensure the maximum longevity of the new component.
If you want to determine a bent crankshaft, it’s best to ask a neighbor or family member to help with assessing the damage. For starters, take off the spark plug from the machine. Now, ask the other person to initiate the cord to start the machine. While they do that, you focus on the blade and the bolt that holds it. If you notice any shakes or wobbles, it’s an indicator something is wrong.
Now, there is another method on how to perform a physical inspection yourself. Here are the steps to follow:
Your mower’s blade operates at over 200mph when in action. Those are huge speeds, which is why the machine uses plenty of kinetic energy. Once the unit encounters an obstacle, such as a blade, it dissipates energy through the shaft and the blade. It’s that energy that causes the bending.
Here are some causes of a bent crankshaft:
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The first thing is to secure the right tools.
Here is what you’ll require:
The first step is assessing the shaft. Here are the steps for doing that:
Now, let’s do the straightening process. Position the shaft on a solid surface and place a heavy pipe on top of the bent. Use a hammer over the pipe several times. Now, see if the shaft is straight by using a level. If necessary, do some more straightening with the pipe and the hammer.
Once everything is straight again, assemble the machine back. You can follow the same steps above but in reverse. If you did everything right, the machine should work correctly again.
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Here are some other crucial things to note when dealing with a damaged crankshaft:
A: The total price shouldn’t go over $100. If you decide to pay a professional to handle the repair, that could increase the cost to $150.
A: While it might theoretically be possible to use the machine, the experts advise stopping immediately. If you notice any issue with the crankshaft, it’s imperative to stop it from damaging the engine and destroying the unit. It’s easier and more affordable to fix a bent crankshaft than a damaged engine.
A: You should only do this if you know what you’re doing. If you are unsure about any step of the process, call a professional. It helps if they are a licensed agent for that mower brand. Another thing to consider is the warranty – if it’s active, you shouldn’t handle the repair yourself.
A lawnmower is an incredibly useful machine. It makes maintaining residential and commercial landscapes easy. While using these devices isn’t challenging, it’s vital to recognize any problem as soon as it appears. A bent crankshaft is a common issue with mowers, so pay attention and make sure to recognize the signs.
We hope our guide helped with how to tell if the lawnmower crankshaft is bent. You should rely on your eyes and ears when determining the issue. Once you establish the bending of the crankshaft, you have the option to repair it yourself. However, make sure that you know what you are doing during each step. You don’t want to risk causing even bigger damage. If you feel like you could use help, don’t hesitate to contact a professional.