Small Engines (Lawn Mowers, etc.)/Craftsman Edger # 536772100


QUESTION: Hello Eric  ... Thank for your previous help but now I have another machine with issues ... It is the Craftsman Edger Model # 536 772100    ... 3 1\2  HP
Engine model # 143.993502
Family # wtpxs . 1631ba
Dis  163
Dom. 9145k
I can get it started but the motor runs very uneven ... I took the carb apart and the float seems to have corrosion on it  ... I tried sanding it down & cleaning it best I could , put it back together and got the same results ... I assume that I need a new float and needle valve but I wanted your take on this ... What do you think .... Thanks Eric


ANSWER: URL to your carburetor parts list:

I agree...the carb is the issue.  Common parts we replace when rebuilding:

Inlet needle/seat, Tecumseh 631021B
Nozzle o-rings, Tecumseh need 2 of these
Primber bulb, Tecumseh 36045A
Float, Tecumseh 632019A
Nozzle, Tecumseh 632735

If you are careful when removing the old nozzle you can re-use it.  The upper nozzle o-ring can sometimes be difficult to remove but you have to remove it in order to replace.

Engine repair manual URL:

Read the section on installing the inlet needle seat.

Make sure you use an air compressor to blow air through all the carburetor holes to make sure they are clean.

Let me know if this helps.

---------- FOLLOW-UP ----------

QUESTION: Hello once again Eric ... I am wondering if the complete carb for the ES 210 is available ... The throttle lever is broken off partially although I can still control it as long as I am wearing gloves so I don't cut my finger ... If so can you please supply me with the part # and a link to instructions on how to replace the whole carb assembly ... Thanks once more

Billy Ammo
Ammo's Lawn Care
Deltona FL 32738

New carb is a Tecumseh 640262A

Amazon URL:

To replace just remove the air filter, loosen the 2 screws holding carb to manifold and remove.  Disconnect fuel line and breather tube hose.  Just manuever the carb to dis-connect the throttle link rod.

NOTE...MARK the hole the throttle link rod connects goes in BEFORE removing car.

Take some pictures as well.

Pretty straight forward job.

Small Engines (Lawn Mowers, etc.)

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Eric A. Jones


Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.


Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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