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625 ex series lawn mower, ran for two minutes and shut off

My mower started on the second pull and ran for two minutes and shut off. I thought maybe water in the gas so emptied it and filled with fresh but still won't start. Got new air filter and spark plug but still no luck. What could be the problem?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

jmgldsmth
  • 1869 Answers

SOURCE: mower starts w/ priming but stops after 1-2 seconds. Air filter, gas, oil, spark plug are new

Remove your fuel filter (in the tank usually) and, replace it

Posted on May 20, 2009

  • 7 Answers

SOURCE: Tecumseh LV195EA Starts then dies.

If the engine is running at all then your sensors should be ok. It sounds to me like its starving for fuel? Once the engine runs out of prime then it starves. Does the fuel system have a shut off valve? How about an inline fuel filter? Either could be plugged. I think what you will need to do is remove the carb from the engine and check to see if its clean and if fuel from the tank is flowing easily to it. Once you have the carb off the engine, remove the bowl from the carb by removing the bottom bowl nut. Use a small can or an ash tray to hold the small pieces. Shake the float back and forth to see if there is anything in it. Some floats are plastic and some are tin. If there is any liquid inside the float there is your problem. Otherwise continue on with your diagnosis by using a bread bag wire, minus the outer covering, and a little jet spray to probe and clean the internal jets. Pay particular attention to the center main jet which will have a small perpendicular air bleed hole near the bottom and to the air vent hole that is on the face of the carb where the air cleaner mounts. Any tiny piece of chaff will cause these to plug. For reassembly, the inlet needle slides into the float, and they are held to the casting by a pin. You can push the pin out with a small screwdriver and then grab it with a pair of needle nose pliers to get access to the float. Finally, check the O ring for cracks that goes between the bowl and the casting. This is an easy job, just take your time. Lawnboys are one of the better machines.

Posted on Aug 31, 2009

daneinwv
  • 124 Answers

SOURCE: I have a Craftsman 625

Hello,
My name is Dane and I am going to try to help you solve your problem.

I believe that you have clogged jets/passages inside of your carburetor. This can happen when an engine gets little use, allowing the fuel in the system to get old and begin breaking down. If fuel is left in a Carb for more than a year, it can eventually turn into a jelly like consistency, and clog the fuel system. What I believe is happening in your case is that the float needle inside the Carb is not allowing gas to enter the carb fast enough to keep up with demand. That's why it will run for 10 minutes and then shut down. After it sits for a while, the float bowl slowly fills back up and it will run for 10 more minutes.

Now for the bad news. This is an extremely difficult carb to work on. It is all I can do to get these Carbs off an engine and back on again to clean them. They are tough because you have a big air filter housing and 2 long bolts with gaskets and then the carb itself and spacers, that you have to hold together as a unit and start the bolts holding the carb to the engine. If you are a good enough mechanic to do this, you will already know how to do it. If not, I honestly suggest you take it to a shop and let them clean it for you. A new Carb isn't all that expensive, so you may want to consider just letting them replace it instead of cleaning.

I hope I've helped. If you found this information useful, please leave feedback as deserved. Thank you! Dane

Posted on Dec 04, 2010

hunter19_46m
  • 7482 Answers

SOURCE: My lawn push mower will

Check to make sure you are getting fire/spark at the plug, if so then do the following:
Check/Clean/Replace your fuel filter if you have one, normally they will be located in the fuel tank.
If the mower/weedeater is over a year old, then I 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.
Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
Be sure to use compressed air to blow out all the fuel and air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Sometimes you can get by with priming the carburetor or using starting fluid 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.
Keep in mind that the float for the carburetor must be level when you go to reassemble the carburetor or follow the instrucitons you get with the carburetor kit.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their orginal position before you started.
This is a FREE answer,Please rate me

Posted on Apr 16, 2011

hunter19_46m
  • 7482 Answers

SOURCE: lawn mower runs rough.got fresh gas,new spark

Hi fcruz775

Sounds like you have dirt/debris in your carburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Also check you fuel line condition after a while they will degrade and need replacment.
Check/Clean/Replace your fuel filter if you have one.
When you remove your fuel lines from the carburetor be sure to make a drawing to how the lines are connected to the carburetor.
Also make sure you are using fresh fuel...and oil mix if your using a two cycle mower or weedeater with the oil to the right mixture and not too much oil as it can cause hard starting.
If the mower/weedeater is over a couple of years old, then I 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.
Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.
Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.
Be sure to use compressed air to blow out all the fuel and air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Sometimes you can get by with priming the carburetor or using starting fluid 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.
Keep in mind that the float (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their orginal position before you started.
Once you have your carburetor rebuilt that should solve your problem.
This is a FREE answer,Please take time to rate me

Posted on Jun 19, 2011

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