B&S 675 engine won't idle

[brehm62]

Okay, I think I have the information you need. I can start the mower and it will run for about one minute. The speed seems fine. Then after that it begins to die. Manually altering the throttle has no effect (so it is obviously not the governor). However, manually partially closing the choke makes it rev higher. So, what does that indicate? The float bowl is not keeping up?

 

[Rivets]

What does that indicate? It means that when your engine is hot it starts running lean. Where would I start. First, remove the fuel line and make sure the fuel is running freely. If it is I would have someone build the carb.

 

[brehm62]

My suggestion would be to go through the carb thoroughly. Give it a proper cleaning and don't forget the bowl screw hole. Get a can of compressed air and blow through all the holes/carb jets. You can also use the wire from a bread tie or a pin to poke through the holes.
With the bowl off, reattach the carb to the engine and connect the fuel line. Use your finger to manually lift and lower the float to ensure that fuel flows through. Yes there will be some fuel spilling so do have shop towel handy to absorb the splashes.
Once you can verify that fuel has a steady flow, disconnect the fuel line and put the bowl back on. Don't overtighten the bowl screw either.

I think you're right; I need to check the float bowl. It may not be getting fuel fast enough to keep up with the engine.

 

[justicejamesb]

I have this same mower. I let my nephew barrow it and somehow he broke off the little piece that controls the choke. Does anyone know where I can find another one? Also, all the parts that I will need to fix it?
thanks

 

[Grassbandit]

I have this same mower. I let my nephew barrow it and somehow he broke off the little piece that controls the choke. Does anyone know where I can find another one? Also, all the parts that I will need to fix it?
thanks

partstree.com

 

[Rivets]

Simple, just take your model numbers to your local repair shop and they can get you the parts you need.

 

[lkcutler]

I have this same mower. I let my nephew barrow it and somehow he broke off the little piece that controls the choke. Does anyone know where I can find another one? Also, all the parts that I will need to fix it?
thanks

jackssmallengines.com has parts break down and usually ahve the parts in stock

 

[Tmmay]

Were you ever able to figure out the problem? I'm trying to fix the same mower/issue for a friend. I've taken everything apart including the carb and can't find any obvious issues. Like you, manually closing the choke allows it to rev (seemingly) normally.