AboutEric A. Jones Expertise Lawnmower Repair . Certified Master Service Technician from B&S. Have 13 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. I received a scholarship from the Air Force and am currently pursuing another degree.
Question I have a five horse Brigs and Stratin motor on a rototiller. Anyways it would not start and it had been sitting for a while so i cleaned the fuel bowl and the small holes that suck the gas into the carburetor. Then i put it all back together and now it surging, like the rpms go up and down, up and down, all with in a second. Is this an air leak or not enough fuel? P.S. the only way to make it run constant is to have the choke pulled out half way.
Answer Difficult to say. Have you checked the engine top no-load RPM?
If the engine rpm or governor spring is weak it will cause the engine to surge.
I'd check all the gaskets and bolt torque to make sure there is not an air leak. Also check the engine mounting bolt torque.
The reason is may smooth out with the choke half on is that you are changing the engine RPM.
Are there any adjustments on the carburetor?
Let me know.
Eric
