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Small Engines (Lawn Mowers, etc.)/Craftsman LT1000 Riding Mower Gas In Oil Reservoir


I have a Craftsman LT1000 16.5HP riding mower, Model 917-276134,recently it is draining gas from the gas tank thru the carburetor and ending up in the oil reservoir. The gas tank drains dry over a time frame of about a week and the air filter and carburetor is saturated with gasoline. What is the problem and what is the fix for it. Thank you.

Most likely it is a leaky a carb leaky inlet needle seat.  The usual fix is to rebuild the carb.  The other fix you could do is install an inline fuel shut off valve and just turn the  valve off when you are done using the mower.  Either way you will need to change the oil.  What engine do you have?  What is the engine model, type and code number?

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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