Export thread

Hello, I new here. I’m having an issue with my 6 year old Craftsman push lawn mower with a 190 cc Briggs & Stratton. It all started about 3 months ago when my mower wouldn’t start anymore. I rebuilt the carburetor, changed the spark plug & air filter and all was fine till last week. It still starts fine, but now dies after a few minutes of mowing. After about 10 minutes it starts again and repeats the process. When it dies, I noticed the carburetor throttle blade is wide open. When it cools down, it closes and re-starts again. I think the issue may have something to do with the auto choke system. What do you guys think?...any suggestions?

Can you recgonise the difference between stalling rich and stalling lean ?
If so when it stops is it rich = choke or float problem or lean = fuel supply problems ?

bertsmobile1 said:

Can you recgonise the difference between stalling rich and stalling lean ?
If so when it stops is it rich = choke or float problem or lean = fuel supply problems ?

Click to expand...

I’m not sure I understand your question. How do I recognize the difference between stalling rich or lean?

Mr. T you are having an issue with your choke?? Either your spring is bad or broken...... Binding can be an issue due to trash under the air shroud.......

I made a video a while back that is short but it might help you out..........

Hold a sec .........

Ok here is the video link ..........

Let me know if it helped... I have another one for a backup..........

https://youtu.be/qOm-D93Y9-k

Or you might have a coil that is breaking down when it gets hot..........

Or a bad fuel line that is flapping on the inside of the line...... No way to check that, just replace it......

Or trash getting in the nipple of the tank to the fuel line........

Thanks for the video. I still have the spring attached and it seems to be moving freely. I will start by replacing it though. All seems clean under the air shroud.

Boudreaux In Eunice La. said:

Or you might have a coil that is breaking down when it gets hot..........

Or a bad fuel line that is flapping on the inside of the line...... No way to check that, just replace it......

Or trash getting in the nipple of the tank to the fuel line........

Click to expand...

I bought an ignition coil and replaced it, but it still did the same thing. I took it off and returned it, but they wouldn’t give me a refund. So, I exchanged it for a brand new B&S carburetor. I rebuilt my carburetor earlier this year, but I may just replace it with the new one.

Ok that leaves the coil out..... Fuel cap or like I said, a bad fuel line...... I seen that tooooo many times.............

Boudreaux In Eunice La. said:

Ok that leaves the coil out..... Fuel cap or like I said, a bad fuel line...... I seen that tooooo many times.............

Click to expand...

How do check for a bad fuel cap? Mine looks ok.

Take it off while running on a clean surface that won't cause dust flying..... Take some Vice grips to hold the deadman handle and Sit and relax drinking a cold coke or an adult beverage.......

I have a question for you guys. Is it normal for the carburetor throttle plate to be stuck wide open after my mower stalls? It won’t close in this position till it cools.

Ok, I replaced the carburetor and all is fine for now.

Sorry I didn't see this post last month.......

Yes it is normal for the throttle plate to be open after a stall....... The exhaust is still hot, so it keeps it open until it cools down, then it closes........

Mr. T said:

Ok, I replaced the carburetor and all is fine for now.

Click to expand...

Thanks for the reply letting us know...... I assume it was a fuel issue, but where from we don't know yet....

If you have future issues then the tank or fuel line is the main culprit........

Save your old carb it can be redone very easily and cheaper than a newer one ..................

Let us know Mon Ami ~!~!