Small Engines (Lawn Mowers, etc.)/Honda HHR 2165 VKA


Engine  seems to be running too rich.  Plug is carbon covered. I suspect the choke is not opening . Do you know the theory of operation behind this mower's "auto" choke?

Most autochoke systems with the exception of the Auto Return Choke System (ARCS) ( use a temperature sensor and an airvane to control the choke.

The sensor is the same sensor used in 70-80 autos, a bi-metal sensor which opens the choke when the bi-metal warms up.  The airvane opens or closes the choke based on the air flow produced by the fins on the engine flywheel.

Can you remove the air filter cover and air filter to observe the choke?


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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