Mower runs then dies

[Hotrod stang]

My mower runs fine and cuts fine, then just dies. No sputter or anything. When it dies I can start it back up and will eventually die and it may not. Sometimes it happens after 10 mins and sometimes it waits 30 mins. Sometimes i cut my whole yard and it never dies. What gives? Any help is greatly appreciated!

 

[ILENGINE]

If you have a briggs engine with the walbro carb, I would bet that the little tip of the fuel solenoid is coming off and shutting off the fuel. When you turn the key off after it dies, it resets the tip on the end of the plunger allowing the engine to start until it comes off again.

 

[EngineMan]

We need make and model No's it would help us.

 

[Hotrod stang]

Its a 21hp craftsman. Not sure the model number but it has the b&s engine. I checked the connections and everything looked fine and was tight making a good connection at the fuel solenoid. I also have another problem. I rebuilt the carb going on someone elses advise that this was causing it to die. I redone it with new parts and it keeps flooding the carb. I have tried both old and new needle valve and the float is fine, but still floods. Is there a such thing as the fuel solenoid sticking open? Sorry such a long post but i been at this a couple weeks and im trying to not let this whip me and my grass needs it. Lol

 

[EngineMan]

Its a 21hp craftsman. Not sure the model number but it has the b&s engine. I checked the connections and everything looked fine and was tight making a good connection at the fuel solenoid. I also have another problem. I rebuilt the carb going on someone elses advise that this was causing it to die. I redone it with new parts and it keeps flooding the carb. I have tried both old and new needle valve and the float is fine, but still floods. Is there a such thing as the fuel solenoid sticking open? Sorry such a long post but i been at this a couple weeks and im trying to not let this whip me and my grass needs it. Lol

Did you renew the needle valve seat..?
You say could it be fuel solenoid.......yes if its got one, we can't tell you that until we have the Model Number, look for it on the engine it will be there.

 

[Hotrod stang]

I will get the model number when i get home from work. Fuel solenoid-is that not the piece that screws into the bottom of the fuel bowl? It has a connector that plugs into it also. No i did not do anything with the needle valve seat.

 

[EngineMan]

I will get the model number when i get home from work. Fuel solenoid-is that not the piece that screws into the bottom of the fuel bowl? It has a connector that plugs into it also. No i did not do anything with the needle valve seat.

Well if it has one (solenoid) is it working...?
And if the needle valve not sitting right it will let fuel into the carb, and when that is full it go's into the engine....!
Put you're finger on the solenoid and turn on ignition switch, you should be able to feel a click or hear it.

 

[Hotrod stang]

I will check the solenoid. Yeah i knew with it flooding that it probably filled the crankcase. I drained it last night and put fresh oil in and cleaned the plug real good.

 

[EngineMan]

Do not put too much fuel in tank until you have work out what is wrong with carb, you will end up doing oil again. if so pull fuel out before you leave overnight.

 

[Hotrod stang]

Yeah thats what i been doing. Just put enough gas for it to try and crank.