Small Engines (Lawn Mowers, etc.)/Tecumseh 22HP charging issue


QUESTION: I have a MTD garden tractor with a tecumseh 22HP engine. I have diagnosed no output from the regulator. All other aspects of the electrical system operate normally. I performed all diagnostics by following the V twin factory service manual. The standoff posts beneath the regulator were corroded, so the unit did not have a good ground and likely overheated.

The stator is a 16A coil, and the Tecumseh regulator is 16A and is Tecumseh part # 611184. The part is no longer manufactured. What other brand (Kohler, etc.) of available regulator can I use in place of the 611184? What will fit/work?

Optional Information:
Make: Tecumseh 22HP
Model: ov691 tvt691

ANSWER: Most 3 pin and some 2 pin regulators will may have to change the connector or just solder a replacement in place.  How many connections/pins was on the old regulator?

I use Yamaha regulators on my Honda motorcycle as the Yamaha's are more reliable and much cheaper.

Motorcycle regulators will not work as they are usually 3 phase regulators.

Mower regulators are single phase...only one AC input.

Did you check Ebay, type in "tecumseh regulator" or "lawn mower regulator"


---------- FOLLOW-UP ----------

Tecumseh regulator
Tecumseh regulator  
QUESTION: Thanks for your response.  The regulator has two spade connectors.  If I can't find another 16 amp regulator of any brand, should I choose a lower or higher amperage regulator?  How do I wire the two yellow AC leads coming from the stator into a three-wire regulator?  The only accessory pulling power from the battery when I run the mower is the electric clutch.  I don't mind a battery getting slightly less power than the stator is able to produce, but I definitely don't want to overcharge or boil and explode the battery.  Attached is an image of what I have now.  Thanks.


Use a higher amp rated regulator if possible.  Was you old regulator a square shape with a metal case?  If it only had 2 spades, one must be for the alternator (AC) and the other was the DC output.  Briggs sells some 2 wire regulators.

Do you have a picture of your old regulator?
Can you send a picture of the alternator connector as well?


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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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