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Small Engines (Lawn Mowers, etc.)/briggs model number 220707 type 0641-01 code 84020610


It was running ruff after the summer I started plowing and it back fired and shut off. I tore the carb off and cleaned it very well put new fuel lines on it filter, spark plug and cleaned the air filter. Put it back together and it fired up still running ruff.took it back out and it did it again back fired then shut off. I drained the summer gas cleaned the carb again and went over as best to my knowledge, I have spark and now I noticed that I have no adjustment from full throtle to turtle but the choke is working. And now this time it won't start, it cranks good but the spark plug is dry so it like it is not getting fuel.the carb fills up but nothing gets to the motor and while it's running ruff when it did the throttle screw on the carb had no tension holding it in place so I ordered a new governor clip and spring hoping that will help. I don't know if I am missing a part or if there is anything else I can try. I also put 93 octane in after I drained the summer gas

First, try not to mess with the governor.  If you do, read the procedure on static adjustment at the URL below:

With the engine running a full speed, can you turn the needle jet in, on the bottom of the carburetor to the point the engine will die?

On those carburetors, make sure the throttle shaft is not so wore it is leaking air or the shaft is binding as it is work?  I have seen these carbs with wore throttle shaft cause rough and erratic running.


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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