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Mower run for awhile then shuts off

My mower runs for 10 to 20 min then shuts off and won't start again

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  • Garden Master
  • 49,967 Answers

If you have a Briggs & Stratton this problem is there is not enough valve clearance . IT is a major problem with B&S motors as the valve stems stretch with use and the clearance is lost and when hot the valves are held open. Remove the valves and grind the end to obtain correct clearance.

Posted on Apr 26, 2013

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Posted on Jan 02, 2017

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SOURCE: Mower runs for 10-15 mins. then shuts off.

I would agree with the gas cap being the problem. There should be a insert inside the cap which helps with the tap pressure. If this is lost then the engine will run for a few min. and shut off.
There is one other thing and that is the float in the carb bowl. It may be allowing in just enough gas to fill the bowl and then it is sticking. This would account for just enough fuel to run for a brief period and then shut down.
VTX Guy

Posted on Mar 10, 2009

jgwhomeequip
  • 1902 Answers

SOURCE: Craftsman 19.5 riding mower starts runs quits no power

When you let it sit did you remove all the fuel or add a additive? If you did not then I would recommend that you remove all the fuel and add brand new fuel to your system. Gasoline only last for about 3 to 4 months before it will start to go bad and this sounds like your problem

Posted on May 22, 2009

  • 127 Answers

SOURCE: when mower gets hot it cuts off crank back up run a min cut off

1 of 2 things happening
first change the fuel filter seams that the gas is vapourizing
If that does not fix it replace the engine coil as it heats up it is breaking down in voltage causing the engine to die

Posted on Jun 26, 2009

  • 2 Answers

SOURCE: Craftsman 16.5hp 42 in. Mower runs for about

I am having a problem with my lawn tractor similar to what you describe. Mine runs fine for 15 to 20 minutes and then stalls. It will start back up and run for a few minutes and then stall again. When it stalls it is like when you get off of the seat with the blades engaged. I have replaced the gas and fuel filter and have cleaned the carb and air cleaner with no effect on this problem. I am now thinking that the problem is the fuel stoper located at the bottom of the carb. There is a plunger screwed into the bottom of the carb bowl that is held down when the key is turned on. If you get off of the seat when the engine is running and the brake is not on or the blades are engaged the stoper is pushed up into the main jet fuel path causing the engine to stall. I am going to fabricate a heat shield around this plunger to see if this corrects the problem.

Posted on Jun 25, 2010

  • 640 Answers

SOURCE: have a john deere sabre

Some mowers have a mowing reverse safety switch. That safety will kill the mower if you try to reverse with the deck engaged. Some mowers even have an override button that has to be held while backing up. As for the battery thing, no matter how much you charge a bad battery you will not get it to start a mower if it has a bad cell or two. I would use a multimeter to check battery voltage, but the end result would still be the same, replace the battery.

I hope this gets you going again.

Posted on Aug 07, 2011

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My Kawasaki twin engine model FD 590 on my lawn tractor sputters, looses power and shuts down after about 15 min of running. Will star after it cool down. Cause please??


Immediately check for spark after it dies. A failing ignition module will quit after it gets hot (about 10 minutes) then work again after it cools. Other causes could be a blocked tank vent; try to run till it starts to act up and loosen the fuel cap. See if it starts to run right again or if it does die it starts right back up. A sticking shut-off solenoid, sticking float needle or partially clogged fuel filter can also cause these symptoms. They let some fuel in but not enough and eventually the motor starves for fuel. then slowly the fuel fills back into the bowl and it will run again for awhile till it runs out of gas again.

Sep 01, 2014 | Garden

1 Answer

1987 300 zx starts the quits after 2 minutes and won't start again


probally crank sensor. starts then stalls after driving a few min. then won't start for awhile. u can actually check it on the ecu. 4 green lights then 4 red lights. if you can't run the comp check on ecu let me know i'll look it up its been awhile had same prob years ago all my sensors are new

Oct 28, 2011 | 1987 Nissan 300ZX

1 Answer

Won't keep running quits after about 30 min. you let it sit awhile and it starts all over again.i replaced the air filter and fuel filter.still has the same problem only has 110 hrs. on it


Sounds like your gas cap is not venting. Your fuel tank has to breath in order deliver fuel, so make sure the check valve in the gas cap is working. You can test that theory by removing the cap, and running the machine with a rag over the gas filler neck. Other things to look for would be fuel lines getting hot, or an over heating fuel pump. If it sounds like it runs out of gas when it does die, I would suspect fuel delivery. If thats not it however, check for spark once the machine dies, a magnito or coil can't be ruled out. Keep me posted please! Good luck!

Sep 28, 2011 | Garden

1 Answer

Mower start fine. Runs for 20 min or so and then runs ruff and shuts down. Restarts fine and shuts down appr. 5 mins later. Has new spark plug,air filter, fuel filter and more than enough gas.


It's one of two things. My first thought is that you have a clogged gas cap. Try loosening it when the mower starts to run ruff. If it smooths out again and runs fine, then you know that the carburetor is not venting properly. Either buy a new gas cap or clear the breathing holes in the cap, if possible.

The only other thing it can be is that your Ignition Coil is going bad. A bad Coil, once it gets hot, will shut down. But it usually takes longer than 5 minutes for them to cool down well enough to start back up.

My Vote is the cap!

Good Luck!

Jim

Aug 18, 2011 | Poulan Garden

1 Answer

Have a john deere sabre turn key won't start thought battery was dead charged battery still won't start jump start with car battery it will start then . try to engage reverse with blades running it...


Some mowers have a mowing reverse safety switch. That safety will kill the mower if you try to reverse with the deck engaged. Some mowers even have an override button that has to be held while backing up. As for the battery thing, no matter how much you charge a bad battery you will not get it to start a mower if it has a bad cell or two. I would use a multimeter to check battery voltage, but the end result would still be the same, replace the battery.

I hope this gets you going again.

Aug 07, 2011 | John Deere 22HP VTwin 48" Riding Mower

1 Answer

2010 model 20 hp Briggs motor. Fuel going through fuel line, but not going into carberator. Motor runs good for about 15 min, but after heating up this fuel problem starts. After cooling down for an...


Two things:
1 Is fuel coming out of the fuel line. Older mowers have old fuel lines and they tend to get weak and collapse went they warm up with engine heat. Replace the old fuel line.
2 deposits in the carb. take off the air cleaner, start it up and spray a good carb cleaner in the carb until the engine dies. Put some 'seafoam' in the gas and a little in the oil and put the air cleaner back on and start the mower and mow on FULL THROTTLE. this should claen out the carb. Yes the mower will run rough for awhile.

these two cheap fixes will solve 85 % of carb problems. GOOD LUCK

Jul 17, 2011 | Craftsman 20 Hp 42" Deck Lawn Tractor

1 Answer

Craftsman 19.5 riding mower starts runs quits no power


When you let it sit did you remove all the fuel or add a additive? If you did not then I would recommend that you remove all the fuel and add brand new fuel to your system. Gasoline only last for about 3 to 4 months before it will start to go bad and this sounds like your problem

May 22, 2009 | Craftsman 20 Hp 42" Deck Lawn Tractor

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