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Small Engines (Lawn Mowers, etc.)/1972 John Deere 110 shuts off when key is released


\'72 JD 110
'72 JD 110  

\'72 JD 110
'72 JD 110  
Hey there Eric,
I have a 72 JD 110 with a Kohler K181S 8hp engine.
Last season it ran great until I shattered the piston connecting rod. We just recently replaced the piston and connecting rod, put engine back in and took me a bit to get her to fire up. Finally she did but as soon as does she dies when I release (gently) the ignition key. If I hold key to start she will and roars like a champ getting the engine hot but as soon as I ease off the key it dies :/
Any suggestions? Thanks

Something is grounding the coil or the coil voltage is only present when the key is in the start position.  

Did you get the coil connections properly connected?  

Use a volt meter to measure the power on the coil.  With the key in the run position the coil should be receiving the positive voltage.

Did you check the power at the coil?


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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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