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My mower started smoking white smoke like a SoB. Dipstick smells like gasoline. I did some research and learned that its prolly the carburetor. Can the needle valves on these carbs be replaced? Has anyone else had to deal with this problem?

Not the first time i've seen or heard this. Cause is a sticking float needle. Easy to fix, by replacing the needle and/or seat. Don't forget to change the oil when your done.

I found the parts on Briggs and Stratton website but I dont know if its a Nikki or Walbro carburetor. How can I find out which kind I have?

Post your model numbers and I'll find you a manual.

I ended up finding this on a different post.

"The Nikki has two screws that hold the fuel bowl on. The Walbro has LMT stamped into the carb body just above the fuel bowl and the fuel shutoff solenoid holds the fuel bowl on."

He was talking about a TB SuperBronco but my carb says LMT and the solenoid is under the bowl holding it on. I found a Briggs & Stratton dealer here in town. Hopefully they'll have what I need so I can give this repair a shot tomorrow.

Appreciate your help Rivets. I'll post the results if I have time to gittrdone tomorrow.

I'll watch for your post, if you need a manual let me know.

I pulled the carburetor off and now I can't get the solenoid off. It looks like its screwed on to some threads coming out the bottom of the bowl but all of my wrenches are to thick to get in between the solenoid and the bowl to unscrew it. I don't have extra stout wrenches or nothing either, just regular old craftsman stuff. Any ideas?

You will need what is called a tappet wrench. If I remember right 9/16". You can check with your local auto shop or in our area some of the auto supply stores have free loaner tools.

Craftsman wrench is thick I use a cheap made in china wrench.

(( racing is the only sport that you need two balls ))

Thankya. Stand by

I couldn't find any tappet wrenches or thin wrenches all weekend so I decided to get creative and ended up using 2 nails, some channel locks and some pliers to get the solenoid off. Couldn't believe it worked! Then I replaced the seat and needle. Put the carb back on, changed the oil, changed oil filter, changed the air filter. Cranked off the motor and ran it. Added a little more oil and cut grass for about 20 minutes.
I can't believe it only cost $8 to fix my lawn mower! Couldn't have done it without your help. THanks Rivets! You da boss.

What i have done in a case where the wrench is to thick, before going & buying another wrench
I take and grind off what ever I need to make the wrench thin enough, if you try this, go slow don't
over heat the wrench, once I have done so, I place this wrench in The draw with Special Tools, Works for Me

Rat

LakeRat1 said:

What i have done in a case where the wrench is to thick, before going & buying another wrench
I take and grind off what ever I need to make the wrench thin enough, if you try this, go slow don't
over heat the wrench, once I have done so, I place this wrench in The draw with Special Tools, Works for Me

Rat

Click to expand...

I to took a cheap wrench, and ground it thinning to fit between the solenoid and the carb bowl.

ILENGINE said:

I to took a cheap wrench, and ground it thinning to fit between the solenoid and the carb bowl.

Click to expand...

That makes a lot more sense. I don't know why my brain thought of nails, channel locks and pliers instead of grinding down a cheap wrench.:laughing:

I just have tappet wrenches left over from years of adjusting the big old Kohler cast irons. Now they're repurposed for solenoids.