John Deere LA125 riding mower, three years old, 84 hours, Briggs 21 hp engine. I mowed the lawn. I cleaned the machine with a water hose. Now, IF it starts it will die after about 10 seconds. I took the fuel filter off - it looks good and I can blow through it in both directions so I put it back on. When I take the filter off fuel runs out of the fuel line, so that seems not to be the problem. Spark plug is fine, gapped at .030. Air filter is fine. I took the fuel pump line off at the oil dipstick port and it pumps pressure so I guess that's ok. I had this same problem about 10 days ago. I took the fuel pump lines off and removed the cover from the top of the engine. All the lines are clear and open. When I put the fuel pump back on I installed two lines on the wrong ports. I had the John Deere dealer pick it up and fix that problem. They could not find anything else wrong. The machine was returned and I mowed with it twice - this time the same condition showed up again. It acts like a fuel starvation problem.

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
Best Manuals

Make sure there isn't anything binding the deck belt or blades. Check the spindles for free movenent. If all that is good then it might be the linkage that is supposed to adjust the throttle when the engine is under load or it might be a carb issue...especially if you run ethanol gas in it.

John Deere Riding Mowers
Richard, Check the attached links,instruction and guides for wiring diagram. Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Wiring diagram for john Deere model 125 Google Search

John Deere Lawn Mower Battery Keeps Dying

HOW TO TEST REPLACE SOLENOID ON LA125 JOHN DEERE MOWER

john Deere model 125 Schematic Google Search

Riding Lawn Mower Won't Start ' ThriftyFun

www.thriftyfun.com/tf666549.tip.html

Question: Lawn Tractor Won't Start. I have a John Deere LA125. I bought it new in 2009. After sitting unused in the garage for the winter (5 months) I couldn't get ...

Craftsman Riding Mower Won't Start ' ThriftyFun

www.thriftyfun.com/tf68077908.tip.html

Why will my Craftsman lawn tractor not start with a new battery, new spark plugs, new gas, gas filter, .... Question: 18.5 hp Craftsman Lawn Tractor Won't Start.

Riding lawn mower will not start - Household Repair Series ...

? 3:41
https://www.youtube.com/watch?v=DFDSvWtXwBk
Jun 21, 2013 - Uploaded by Robert DIY
This video will explain how I got a riding lawn mower started. Always check the basics. ... Lawn Tractor Won't Start--Any Ideas? - Duration: 2:04.

You know the old adage, Keep it simple, lol.

I was mowing along on my LA145, which had about 200 hours on it, and it slowed down then died. Before it died, it was acting like it was losing power. It felt like it was only firing on one cylinder. I waited a bit and it restarted after a lot of cranking. I made a couple mowing passes, and then the same thing happened.

Because I have mowed commercially for many years, I know my equipment inside and out. This mower was in top running condition and should not have been acting this way. There were no engine misses, no backfires and it was not normally hard to start. I knew the carburetor was clean, the coils were good, and the plugs were new. The fuel filter was recently changed. I got off, lifted the hood and gave a general inspection of the engine compartment. I noticed the fuel filter was nearly empty. I pulled the hose off the tank side of the filter and saw there was no flow.

The gas should gravity flow from the tank to the filter, if the tank has a good supply of fuel. Not that I recommend this practice, but I have no problem with doing it myself....I wiped the hose off and blew air back into the fuel tank. It helps to take the gas tank lid off first. After I got a good flow of air going back into the tank (it required several lungs full of air, you can hear the bubbles) the fuel began to gravity flow back through the hose at a decent clip. This fixed the problem. There is likely silt build up in the tank and it settles at the output port blocking the flow of fuel.

The problem repeated itself several times last summer. Back at the shop, I used compressed air to blow the line clear. The problem has not shown up in quite some time.

The housing might be riveted to the engine housing and might need to come off together. Hope this helps!

Hi and welcome to FixYa. I am Kelly.
The light (blinking notification on digital read out) will come on 1/2 hour before and remain on for 1/2 hour after the interval. If you pass your model number I can paste the notification data. It is NOT re-setable.

How Does Your Hour Meter Function? Model Year
Model Number and Product Identification Number Groups. Is the tractor equipped with an hour meter? Does it accumulate hours with the key switch left "ON", but not running? How long does the service reminder (SVC) display before and after service intervals? Does the Hour meter stay lit or display hours when the key is in the" OFF" position? Does the hour meter only count hours when the engine is running?
2008 - 2011 D100 D110 D120 D130 D140 D150 D160 D170 LA105 LA115 LA125 LA135 LA145 LA155 LA165 LA175 Yes No half hour No Yes
^- This was a chart... It did not pst well at all. The key is that the interval underlined above is 1/2 hour before and after the service due period and it is NOT resetable.

Thanks for choosing FixYa,
Kelly

The lawn mower you have is manufactured by the John Deere Company. They handle all inquiries and complaints on these lawn mowers. You can contact them at 800-537-8233
Hilary @ Scotts

does it turn over slow or fast if it turns slowly thats the problem so it could be battery or starter they have to have a good amount of rpms to burn fuel right when starting if not it floods out the engine with gas hope this helps thanks wade

Dirty air cleaner.

Clogged fuel filter.

Replace or clean both...