It was first made in Dublin, Georgia.
John Deere lawn mowers are made in the USA; most mowers are made in Kentucky, Tennesse, and Wisconsin. Many of their tractors are made in Iowa.
Who made Tempo riding mowers
the first single engine was made in 1923
NO! Ariens are made by Gravely. Husquavarna mowers do not even come close to compare to the quality of an Ariens.
It is made in Mexico.
to mow lawns
If you mean who made the first combustion engine, i have no idea, but the first Four-Stroke engine was made by Nikolaus Otto.
No, they are not.
I'm not sure who made it, but the one I have has a Tecumseh horizontal crankshaft but no Model number on the engine. If someone has one with the engine model and number on it I would like to know so I can order parts. rongaddy@comcast.net
The Answer to your question RJ19LM spark plug set at 20 thousand of an inch.
The first electric clutch was made by warner electric in 1950 and was used on machining lathes. In the 1950's and 60's it was adapted to other applications including farm equipment. Mowers came later and the clutch incorporated a braking system when disengaged.
They used to be made in the US but now are manufactured in China