JD D140 carb issues again

[NavyVet88]

Briggs and Stratton model number 44N677-0001-G1

Carb number 593197

After engine started running poorly, I pulled the plugs to check them and they were both saturated with gas. Pulled the carb off and took the bowl off it and found the plastic tube/tower the single jet sets in had a broken o-ring. This is the o-Ring that seats the tower in place in the bowl for the solenoid plunger. Also found the o-ring for the top side of the float was pinched badly. Not the float gasket, but the o-ring for the top side.

Ordered the float gasket kit and replaced them accordingly and had to go to autozone for the other o-ring which “seems” to be a good fit. I can’t find this o-ring anywhere on a diagram yet alone a part number to order the actual correct o-ring.

Mower will now idle fine but as soon as you hit about mid throttle it drops to a slow sputter that will not change once it starts. I’m ready to take buckshot to this piece of s***.

 

[jhellwig]

A bad spark plug can act the same way.

 

[Soft Cars]

Carb number 593197

According to the parts list, you're supposed to have carb 594207.

44N677-0001-G1

 

[tnt_motorsports]

Did you check the online JD Parts catalog? It seems to have a complete breakdown of the carb.

https://partscatalog.deere.com/jdrc/sidebyside/equipment/82042/referrer/navigation/pgId/1191244

Just my $0.02

 

[NavyVet88]

According to the parts list, you're supposed to have carb 594207.

44N677-0001-G1

593197 is what’s stamped on the carb for the part number. I’ve seen the part number you’ve listed and I think it’s a replacement or updated version.

 

[JimmyChainsaw]

Looks like a Nikki carb to me.That is a good thing.The part no for the bowl gasket is 698781.The sealing washer for the bowl nut and anti backfire solenoid is 695410.Hope this helps.

 

[Soft Cars]

593197 is what’s stamped on the carb for the part number. I’ve seen the part number you’ve listed and I think it’s a replacement or updated version.

It's possible you need to get the Genuine Briggs & Stratton carburetor. Those Chinese knock-offs for $40 can cause issues.

eBay

 

[Soft Cars]

Also there's two different jets; #117 and #118.

#118 is the high altitude jet and if the Chinese put that one in and you're at sea level, you're gonna be running way too lean.

 

[mk378]

Look for black smoke to confirm a rich condition. Check for obvious stuff like choke staying closed or clogged air filter. Oil contamination of a dry paper type filter prevents air flow.

 

[NavyVet88]

Look for black smoke to confirm a rich condition. Check for obvious stuff like choke staying closed or clogged air filter. Oil contamination of a dry paper type filter prevents air flow.

Black smoke. Filter on or off doesn’t change the result. Choke appears to operate normally

 

[Warstud]

Maybe the o-ring was only part of the problem and the carb is dirty . Run some Techron, Seafoam or STP in it to see if clears up .