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Small Engines (Lawn Mowers, etc.)/Honda FG100 Tiller - pumpin oil


I have a Honda Mini-tiller that runs good, but it is now pumping oil out thru the carburetor air intake. It is coming out thru the hose from the valves. Should I try to adjust the valves, or could I maybe need new piston rings. The parts diagram doesn't seem to show any valve guide seals. Appreciate the advice.

Is the oil over filled?  Have you changed the oil recently?

I would make sure you have fresh, clean oil, the correct weight and amount of oil first.

I would check the valves to see if they are within spec.

When was the last time you check the valve clearance?


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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