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Craftsman 1438766000 Mower, carburetor problems,... Mower will start using either and will run as long as I am pumping gas in with a spray can,... took out and cleaned the carb, replaced the 2 small O rings, blew through the holes, replaced the primer/cover plate and air filter holder and the air filter,... but it still won't stay running after starting with either,..? got fuel, spark, motor runs...? any idea's,...?

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I had this problem with my Rover Mower a while ago. It nearly drove me mad trying to figure it out. And then I did the only thing I hadn't done so far. I cleaned out the fuel tank. And sure enough, there was a fair amount of gunk in it. And I also cleaned out the filters while I was problems ever since

Posted on Apr 08, 2011


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My Craftsman lawn mower that does not want to run. What should I do?

need to be sure fuel is flowing from gas tank to carb. clean carburetor. fuel pump is pumping fuel? it is not getting fuel

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How do I fix a Craftsman lawn mower that starts but soon quits running?

Your problem is the carburetor. Anytime your equipment runs and shuts right off, you can automatically eliminate spark and air. What you have to do is take the carburetor off and remove the bottom bowl, get carburetor spray from advanced auto, gum out,... Spray into every port in the carburetor, every hole you see, in the direct middle 9f the carburetor is the emulsion tube, spray in there as well. If you have an air compressor, that will help too, blow these holes out. Use 89 octane gas from now on as it's cleaner gas...

If you need more visual ...go to you tube, type in how to clean mower carburetor, you will find many videos... you can do this job yourself...

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I can get my lawn mower to start but it will not stay running

Drain all the gas out of your fuel tank via fuel line to carburetor. Then remove the bowl under your carburetor, place container under carb first. You will see that you have water in your gas. Just a little would keep your mower from starting and running. GOOD LUCK FRIEND.

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How primmer bulb works

actually the bulb primer pumps a little gas into the carburetor. if it is torn or worn out the replacement is inexpensive and easy to replace. Ebay sells them for anywhere from 3 to 5 dollars. I replaced mine and still had hard starting and throbbing. I used it this way for quite some time until it finally would not start. I had been spraying the carb with cleaner for quite a while as well. Well I finally fixed it and here is how. You have to remove the filter and housing, then the frame that attaches to the carburetor and be careful not to damage the gasket. Once removed, look at the gasket and on the left side you will see a cut channel leading to a hole. Spray that hole with carb cleaner really well. Reassemble all and the mower will run like new.

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Take air cleaner off. Shoot some spray carburetor cleaner in the carburetor and try to start Try this a few times to see if the engine will fire.. If it fires or starts then there is a fuel delivery problem. Could be a dirty fuel filter, bad (stale) gas, a dirty carburetor. If it does not start with the carb cleaner, check the spark plug. It may be fouled. Check for spark - take plug out of head. with the plug attached to plug wire, hold plug with a pair of insulated pliers, and touch outside of plug where the threads are to the engine, while some one pulls on the start cord. You should get a bluish spark. If you get a weak spark use a new plug and try again. There should be a bluish spark. Make sure you hold the plug against the engine making good contact. If no spark at all, could a bad magneto.

Getting back to the carburetor. If you think the gas in the tank is stale, drain it out and put fresh gas in the tank. Change the gas filter.
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I have a 7 year Craftsman 17.5 HP 42 in. lawn tractor. It starts to leak gas recently and stops frequently after running over 30-40 minutes. I can not identified where is the gas leak from but I saw gas on...

I have a Craftsman mower. Last year I had a similar problem with the mower stopping after running awhile. I noticed that the plastic gas tank was collapsing. The next time it began to stall, I immediately loosened the gas cap and it didn't stall. The vent holes in the cap had plugged up. Check this out.
I can't help you locate the fuel leak, although it sounds like the carburetor float is not stopping gas from flowing into the carburetor.

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