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Help! Murray Lawn Tractor Died On Hill

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#1 gak22 OFFLINE  

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Posted May 12, 2014 - 08:01 PM

Hi all, hoping someone on these forums might be able to share some wisdom applied to my particulars today. Was mowing my lawn this afternoon on my Murray 46581x92A (with Briggs model 313777 type 0134-E1), with grass a little higher than normal, probably 4-5" in most spots. After I'd been mowing flat areas for about half an hour, the engine stopped as I mowed up a 20 ft stretch of incline (~45 degrees). Specifically, the engine slowed down, sputtered, and then stopped with a "pop" out of the muffler. Waited 5 minutes, tried to start er but the engine would not even crank. Waited an hour, and the engine cranked but would not start.

Has anyone encountered this, or have any ideas on what might be wrong?

Chris



#2 Texas Deere and Horse OFFLINE  

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Posted May 12, 2014 - 08:10 PM

Welcome to GTtalk. When you first tried to start it, did it move at all or did it act like it was seized? Have you checked the oil level?



#3 New.Canadian.DB.Owner OFFLINE  

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Posted May 12, 2014 - 08:26 PM

... Waited 5 minutes, tried to start er but the engine would not even crank. Waited an hour, and the engine cranked but would not start.

Has anyone encountered this, or have any ideas on what might be wrong?

Chris

Welcome.  By "would not even crank" do you mean the engine would not rotate, or the battery would not turn the engine over?  Did you hear the solenoid clicking when you turned the key or was there just crickets chirping?

 

When the engine stopped, was it like you turned the key off (quick) or like you ran out of gas (slow)?


Edited by New.Canadian.DB.Owner, May 12, 2014 - 08:28 PM.


#4 JD DANNELS OFFLINE  

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Posted May 12, 2014 - 08:58 PM

What engine are you running? My MurrayYardKing has the 22.5 hpBriggs V-Twin. Last year it started blowing back through the intake on 1 cylinder. I got the stuck valve loose and I started using MMOin the fuel and it has never been a problem since.

if you were working it hard carbon buildup on the valve stem could cause the valve to stick.

Edited by JD DANNELS, May 12, 2014 - 09:02 PM.


#5 HDWildBill OFFLINE  

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Posted May 12, 2014 - 09:21 PM

Welcome to GTtalk.  What happens when you put it back on flat land?



#6 boyscout862 ONLINE  

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Posted May 13, 2014 - 02:06 AM

Welcome to GTT. I have to ask if this was the first time you used it this year. It could have overheated because of a mouse nest in the fan shroud. Post some pics and let us know more details. Good Luck, Rick


Edited by boyscout862, May 13, 2014 - 07:20 AM.

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#7 crittersf1 OFFLINE  

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Posted May 13, 2014 - 05:32 AM

:welcometogttalk:



#8 gak22 OFFLINE  

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Posted May 13, 2014 - 09:50 AM

Thanks for all the excellent and rapid advice. Wow!  :) Try to answer the questions in the previous posts: Yes, checekd and oil levels are good.  I have mowed 4x prior this season.  Engine was stopping fairly quickly, more like turning off key/ignition than running out of gas.

 

UPDATE: This morning, tried again on flat ground. The engine now started up fine, but now it appears to be cutting out when I dis-engage the parking brake. Engine runs fine until I release the brake, in multiple test runs.

Am I looking at an electrical issue? Does what I'm seeing now make sense in light of my engine dying on the hill yesterday? Confused


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#9 Texas Deere and Horse OFFLINE  

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Posted May 13, 2014 - 10:29 AM

Are you sitting in the seat when you have it running and if so are you moving around enough to make the seat safety switch cut out?


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#10 New.Canadian.DB.Owner OFFLINE  

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Posted May 13, 2014 - 10:32 AM

Ditto on TD&H.  Sounds like a failed safety switch or associated wiring.  



#11 gak22 OFFLINE  

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Posted May 13, 2014 - 01:41 PM

I inherited the tractor when I bought this propery 4 yeras ago, and the previous owner said they had "bypassed" the seat switch. I've verified this over the past few years as I've been able to leave the engine running (blades disengaged ofcourse) while I hop off the seat to move branches, etc. 

 

Either way, as you've suggested the signs seem to be pointing to eletrical.  What should I be looking for specifically - do connectivity / line testing?



#12 HDWildBill OFFLINE  

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Posted May 13, 2014 - 04:27 PM

First thing I would do is check to see if that bypass on the seat switch is still good and solid.  You might even crank it up on level ground then take a jack and start to raise the front end  and see what happens.  Take it up slooooowly and listen for anything that moves.






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