Riding Mower Won't Restart After Hitting Something?

The impact of hitting or running over something with your riding mower may cause damage to the flywheel key, keeping you from restarting the mower. This part can be purchased and replaced to get your mower back up and running. This is a page about what to do when your riding mower won't restart after hitting something.
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August 25, 2012

I have a Murry Select 17.5 HP 42 inch cut mower. I hit a stump and the mower stopped right away, my husband changed the blades yesterday, charged the battery last night and went to start it today and nothing. It doesn't even try to start.
The kill switch from what we understand had been disconnected by the person we got it from, but if you touch the two wires together it causes a short that will turn the mower off. Please help.

By Bonnie

Answers

August 26, 20120 found this helpful
Best Answer

There a rectangular shaped piece of metal down where the blades attach that has been sheared off more than likely. Don't remember what they are called but the ex was always shearing them off. They are a safety measure. You can replace them yourselves if you can locate them.

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August 27, 20120 found this helpful
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That piece of metal is called a keyway and you can get them at your local hardware store. It is best to bring the old one with you because they come in all different sizes.

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9 More Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

May 31, 2020

I accidentally ran over a hose. Now it won't start. I removed the hose by cutting it away and pulling the rest of it out. Now if I try to start it, it clicked a couple of times and then nothing.

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May 31, 20200 found this helpful
Best Answer

Maybe there is a safety switch, you need to locate that usually under the sweat. If not, it could be the flywheel key.

Here is a thread for that here: www.thriftyfun.com/Riding-Mower-Wont-Restart-After-Hitting...

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June 3, 20200 found this helpful
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It sounds like the blades of the mover are locked or jammed. You may need to turn the mower over and remove the blades or see what is causing them to not turn again. You have tripped the emergency switch on the mower and it shut off automatically when you ran over the hose. Now it has to be reset in order to work again. I know they have the switch under the seat of most movers and you should rises up the seat and check for the switch. Basically all you need to do is put it again or move it to the opposite position and start the mower again.

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August 20, 2017

I hit an object with my riding mower and now it will not restart. Is there a blade safety switch somewhere that I can get to so I can restart the tractor. Thanks.

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August 21, 20170 found this helpful
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You might have damaged the flywheel key or the push-rod or the crankshaft.

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It's a Husqvarna riding mower. I ran over the metal gutter on the ground from the house. The engine will attempt to start and when I turn the blade on it won't even turn over to start at all.

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Like it's nothing. The blades looks fine though. And also the belt does look a little loose. I am not sure if it's suppose to be that way.

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September 27, 20191 found this helpful

The tension of your belt should not be loose, make sure blade is not bent and clear of debris!

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September 27, 20191 found this helpful

If the mower shut off after hitting something there is normally a safety switch under the seat that needs to be pushed to start it again. Plus before you can start the mower you need to clean under the mower, remove anything that is stuck in the blade and make sure the belts are all tight and in place.

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September 27, 20190 found this helpful

You bent or broke a part. It needs servicing

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October 1, 20190 found this helpful

yes the blade is fine and clear I hit a small piece of tin metal. I didn't know about a safety switch I look for it when I get home ty

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September 2, 2019

I ran over some barbed wire with my John Deere D170 while mowing. The motor stopped. I unwrapped the wire from the far right spool.

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Now, it won't start and won't turn over when the key is cranked. Any ideas?

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September 3, 20190 found this helpful

You bent or broke something. You will need to get it serviced.

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September 3, 20190 found this helpful

Did you try to check the reset switch under the seat to try and start it again? Normally if you run over something the motor shuts off to protect the machine. Check to see where your reset switch is and press this. If this does not help you'll need to take it in for service.

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I hit a rock with my Husqvarna riding lawn mower. Now it won't start.

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August 13, 20190 found this helpful

You broke or bent a piece. Now the mower cannot engage. You will need to take it in for servicing.

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August 14, 20190 found this helpful

Make sure there isn't something else caught underneath,to add more problems.

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September 17, 2019

I hit a rope with my Sears Craftsman riding lawn mower. I got the rope out, but now it is dead it won't start it does nothing.

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September 17, 20190 found this helpful

You either broke or bent a piece. It will need to be serviced.

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April 19, 2019

I have a John Deere 100 series riding mower. I hit a limb and the mower cut off. I disengaged it and now it's leaking gas from somewhere under the air filter and it starts at first then stalls out.

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April 19, 20190 found this helpful

This is a repair that will take a lengthy inspection. If you are not sure what you are doing, take it to be serviced. Gas is highly flammable.

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April 20, 20190 found this helpful

Sounds like you have undoubtedly punched a hole in something that flows from the gas tank as I'm sure you realize.

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Stalling may be caused by an uneven flow of gas causing it to flood.
I would suggest you not try to start your mower until you find out where the gas leak is located and get it repaired as a spark at this time may cause a fire.

You could start with removing the air filter to see if you can spot the leak but it may just be flowing from somewhere else to the air filter. Be sure that any rags used are disposed of properly as they can remain flammable for a long time.

You may have to have it serviced at a repair shop just to be sure it is repaired properly as a limb can cause a lot of damage as I feel sure you have found out. Gasoline is just too dangerous to work with and repairs like this may not be easy to find.

It would be nice if you have a "mechanic" friend that could help you find the problem as sometimes it takes a second person to help check things like this.

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June 28, 2019

The blade of my tractor get struck with something and then it shut down. Now I tried to start it and it is just clicking and nothing happens.

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Is it possible about the flywheel key? Or I blew up something else? Any ideas?

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June 28, 20190 found this helpful

You bent a piece and it is interfering with the starting. You or someone else has to take it apart and see what is bent or broken.

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June 10, 2019

I hit a stump with my Murray Performance 21 hp 46 inch cut riding lawn mower. Now the tractor starts, but when I lower the deck to cut it shuts off. Any ideas as to what may have happened?

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June 10, 20190 found this helpful

You must have bent something and now the deck wont lower. You will need to have it repaired.

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