Small Engines (Lawn Mowers, etc.)/homelite chainsaw

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Question
MR. JONES HOW ARE YOU, ME AGAIN. WENT TO USE MY HOMELITE CHAINSAW TO CUT A BRANCH. GAS IS JUST POURING OUT OF CARBURETOR AND EVEN CAME OUT OF CYLINDER HEAD WHEN I TOOK THE SPARK PLUG OUT. I USED THE SAW AROUND FEBUARY THIS YEAR, AND IT RAN OK TIL NOW. MY SAW IS A HOMELITE 27AV THE MODEL NUMBER IS UT-10848. THE FUEL LINES LOOK FAIR THE PRIMER BULB STILL WORKS DOES NOT LEAK. COULD IT BE DIRTY CARB.? I WOULD APPRECIATE YOUR ADVICE, THANK YOU, FRED

Answer
The only way gas can enter the cylinder is through the carburetor inlet needle.  The needle had to leak for gas to get past.  The leaking could be due to a bad inlet needle, metering diaphragm or a gas tank that is not venting and causing too much pressure forcing the gas to leak past the inlet needle.

I would start by installing a carburetor kit.  I tried looking up the carb, the part number is UP06737A but is no longer available.  I suspect the carb is a Walbro.  The carb will have the manufacturer brand name on it as well as a model number.  You should be able to find a repair kit at you local small engine repair shop.

Did the saw run after you drained the gas out of the cylinder?

Eric

Small Engines (Lawn Mowers, etc.)

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Eric A. Jones

Expertise

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.

Experience

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.

Education/Credentials
MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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