Small Engines (Lawn Mowers, etc.)/John Deere LX277 PTO issue



I have an issue with my PTO engaging.  So far I have removed the deck, measured the voltage coming out of the switch on one side of the connector when disconnected (12.4V) and measured the PTO at 3.4 ohms.  When the tractor is started and I engage the switch I can hear a clicking noise like it is trying to engage but it doesn't.  

Any ideas on what to try next??


ANSWER: Having you made sure to dis-connect the battery and clean the battery terminals can battery cable ends with a wirebrush?  I have fixed a lot of weird electrical problems just by cleaning the connections.

Can you turn the blades by hand...basically must make sure all of the deck parts are properly functioning.


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QUESTION: The mower runs and starts fine.  As of right now the deck is off and when I try to engage the PTO it just clicks while the mower is running.  What is the best way to check if the PTO is bad??


Do you know what brand of clutch is on the mower?  The part number is John Deere Electric Clutch - AM126100 but I can find the manufacturer of the clutch.

Using a multimeter (ohms setting), verify clutch coil resistance between the two terminals of the clutch wire connector. Coil resistance should be 1.75 to 1.93 ohms.


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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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