Small Engines (Lawn Mowers, etc.)/carburater shut off valve

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Expert: John C. Bridgers Sr. - 11/27/2006


Question
Hello John

Followed your advice and installed a fuel shut-off valve to correct the ongoing leak through air filter even after changing needle and seat twice.Problem is now solved.I wonder however since the leak was substantial,( it would empty the tank)if when the engine is running,and the shut-off valve open of course if too much fuel is supplied to engine making it run rich.The needle is obviously not doing what it is intended to do, so wouldn't more fuel than needed by engine flow into the bowl and then into venturi?

Thank you so much for your help.
Sincerely
Casimiro

Answer
 Hello Casimiro:

 If the Carburetor is Running Rich you will See Black Smoke from the Exhaust. You May need to Look Into a New Carburetor. From your Description it Sounds like the Molded Seat for the Needle is Pitted. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks. Be Safe.

 Good Luck

 Respectfully

 John

Small Engines (Lawn Mowers, etc.)

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John C. Bridgers Sr.

Expertise

Small Engine Service Center Co-Owner - ATVs, Mowers, Trimmers, Snow throwers, and Many Other Small Engine Operated Equipment. I can answer questions pertaining to Most Small Engines (Air and Water Cooled) and their Associated Equipment as well as Lawn and Garden Equipment, e.g. riders, tillers, trimmers, cement mixers, chainsaws, etc. I have been repairing small engines for 34 years. Briggs & Stratton, Tecumseh, Kohler, Lawn Boy, Stihl, Poulan, Mac, and Honda; to name a few.

Experience

I have been repairing small engines for 34 years. Briggs & Stratton, Tecumseh, Kohler, Lawn Boy, Stihl, Poulan, Mac, and Honda; to name a few.

Education/Credentials
Technical College for Gasoline and Diesel Engines. This was a Full Course on Complete Dis-assembly and Repair of ALL Components pertaining to Engines, Transmissions, Rear Ends, Electrical. I Found the Small Engines to be Interesting because they are Small and Simple.

Past/Present Clients
I have worked on small air/water cooled engines for 34 Years. I performed warranty work for Lowes of Wilson and other retailers in the area. I Own a Yard Maintenance and Certified Small Engine Repair Service Center.

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