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My quantum xts 50 after priming wont fire

The mower has been reliable has full tank of fuel but after priming simply wont start

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  • 322 Answers

Does it start when you prime it or does it not start at all? if you prime it and it runs until the prime burns off then won't start again, try priming it again. If it starts and runs until the prime burns off again then it is a carburetor issue. It isn't supplying the engine with fuel to run after the prime is gone

Posted on Jan 23, 2013

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Posted on Jan 02, 2017

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steve_lima
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SOURCE: I have a Brigs&Straton 6.5 Quantum lawnmower will not stay running. I can keep it running by restricting the amount of air entering the carb with my finger (choking it) The mower will start if it

the problem is in your carb.,at the bottem of the carb. there is a bolt that threads in to the carb.pinch off the fuel line so that no fuel comes out after the fuel bowl is off the mower.now look into the bolt that you took off.there should be a hole oppisit the head of the bolt.there are also two holes that go through the sides.these holes are the fuel intake to the carb,the hole in the center is the fuel nozzle.most likely you have dirt blocking this hole and not letting the motor get enough fuel to run.thake some carb cleaner and spray it in the hole.take an air hose then blow the nozzle out.while you have the screw out take the bowl off and check to see if there is any water or dirt in the bowl.after cleaning.reinstall the bowl and start mower again.should be running ok now.if not let me know and i'll guide you through another fix.let me know if this helped or not................

Posted on Jun 02, 2009

  • 1 Answer

SOURCE: Self-Propelled Model Starts, then dies after about 15 seconds

I posted same problem as this couple days ago. Took mower to shop. The governor spring (located just under the air filter) had come off. So glad it was something so minor!

Posted on Jul 25, 2009

  • 30 Answers

SOURCE: won;t start

Hi, it is possible that even if you changed gas, assuming water was in the tank as your original problem, that some stayed in the bottom. If you pump the primer while it fires up and it helps to keep it running, you still have some water.

Posted on Sep 09, 2009

hunter19_46m
  • 7482 Answers

SOURCE: 4.5 hp Briggs& Stratton push mower will not run

You need to rebuild your carb. The diaphram in the carb has gotten hard and is no longer acting as a fuel pump to pump the fuel to the carb. Get a rebuild kit and a compressor (for compressed air) to blow out the jet passages. It is an medium to easy job, just watch the small parts. ----------------------------------------------------------------------------- Hint: Before you remove your fuel/air jets, bottom them out first and count the number of turns it takes to bottom them out and mark it down for each fuel/air jet. When you go to reinstall the fuel/air jets bottom them out and then back them back out to the number of turns before removal. That way the fuel/air jets are set to the right number of turns when it was running right. Good Luck, I hope this helped Please rate me...Thanks

Posted on Jan 04, 2010

hunter19_46m
  • 7482 Answers

SOURCE: I can crank my murray gas lawn mower 6.5 quantum

Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
run a few times like that and it will flush the gunk out of the jets,
but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
Please rate me, Thanks
Good Luck, I hope this helped

Posted on May 15, 2010

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