Small Engines (Lawn Mowers, etc.)/governor wont work


I have a toro 621e power clear snowblower and the governor doesnt work. The engine also surges constantly

Most likely a dirty carb. Do you have an air compressor so you can use to clean the carburetor?

You could order a new carburetor, Toro part number 120-4418.  Google the part number.

If the governor is not working, make sure the carburetor throttle butterfly is not sticking...I have seen them gum up due to bad fuel.

Make sure your fuel is no older then 60 days old and use STABILIZER!!!  This will help keep the fuel system working properly.  Without STABILIZER the carb will gum up, fuel lines will harden and it will not run.


Small Engines (Lawn Mowers, etc.)

All Answers

Answers by Expert:

Ask Experts


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

©2017 All rights reserved.