Starts, runs, then stalls

[Keljan11]

Hey all
I have an older B&S 6.5 hp push mower (model 944.361543), that hasn't been run in maybe 7 yrs. It's been stored in a shed, fuel was drained when put away.
Put in new gas, pumped the bulb a few times, 2 pulls and it started up. Ran great, but gas was running out of the pump bulb. Shut it off, drained the gas and ordered a new primer bulb.
Installed new primer. As I had it apart anyways, thought I would check the fuel bowl and clean it. Put it all back together.
Now it starts right up, but stalls 3-5 seconds later. Several times.
Any suggestions as to why its now stalling??

 

[Tiger Small Engine]

Hey all
I have an older B&S 6.5 hp push mower (model 944.361543), that hasn't been run in maybe 7 yrs. It's been stored in a shed, fuel was drained when put away.
Put in new gas, pumped the bulb a few times, 2 pulls and it started up. Ran great, but gas was running out of the pump bulb. Shut it off, drained the gas and ordered a new primer bulb.
Installed new primer. As I had it apart anyways, thought I would check the fuel bowl and clean it. Put it all back together.
Now it starts right up, but stalls 3-5 seconds later. Several times.
Any suggestions as to why its now stalling??

Need to clean carburetor. Remove, remove jets, etc., clean, put back together, install on mower.

 

[StarTech]

In this case the fuel bowl bolt is the main jet and must be cleaned.

Boy I haven't access the 944. series manuals in a while.

 

[Keljan11]

In this case the fuel bowl bolt is the main jet and must be cleaned.

Boy I haven't access the 944. series manuals in a while.

Yes, weve owned this mower for a while, but it ran so well before we stored it, i decided to keep it around (as we have the room on the farm).
I had just cleaned the fuel bowl, and the little brass jet nut (and the 2 small holes in it, as I had it partially apart to change the primer bulb anyways.
It did run nice, then I notice the fuel dripping out of the original primer bulb, and that's why started this project in the first place.

 

[Keljan11]

Mower was still stalling 3-4 seconds after starting. Took off the air filter, and removed the carb. Checked and rodded the main jet bolt (fuel bowl nut). It was clean. Checked the ports on the carb for blockages, blew carb cleaner thru all the openings. Put it all back together. Put on a new fuel line (as the old one looked a bit corroded). Tried it again, and absolutely no different than before I tore it apart. Only thing different is the new primer bulb I put on it in the beginning.

 

[SeniorCitizen]

interesting cleaning differences of cleaning products .
Berryyman products.com/b12-chemtool-vs-seafoam-which-one-cleans-better/

 

[slomo]

Berryyman products.com/b12-chemtool

Berryman better all day long.

 

[Keljan11]

Hi again. Sorry for the late response. Thank you for all the support and suggestions, guys. Tore it all apart again (a few times) thinking I'd missed cleaning a port or something. When I accidentally cut/broke the fuel bowl gasket. I have 2 o-ring kits and none fit. As I live an hour from the closest parts shop, I decided Amazon was better than valor, $24.00, and it's running again like it did originally.

Thanks again guys