I own a 1948 JOHN DEERe B so I know for a fact that B's serial number 201000 and up have positive ground. Don't reverse the polarity cause it'll fry the generator and possibly the starter (the starter might even turn backwards - not sure cause I've always been sure to connect the batter with positive ground).
The older B's should most likely be the same as 201000 and up. My dad told me that a lot of old vehicles from the 40's had positive ground. Not sure why though.
How much does a john deere 401 loader weigh
if you reverse the diode in a half wave rectifier, you would expect the A- Ripple to increase B- output to be less filtered C- out put polarity to be reversed D- output voltage to decrease
Here's a chart that will give you all kinds of info about the "B". Go here: http://www.johnnypopper.com/cgi-bin/jdstatsf.cgi?B
Farmall H that is easy the only thing that will happen if you try pulling with a John Deere is it will break down
$500 - $3000 depending on condition
The first tractor with the John Deere name on it was the Dain model, which wasn't very successful. It was manufactured in 1918. Between 1918 and 1923 the tractors were manufactured under the Waterloo Boy name that was already being used by a company they purchased, In 1923 they began manufacturing the John Deere Model D. They were all manufactured in Illinois.
There were about 298175 made from the years 1935-1952.
HECK NO!!! A 1940 B john Deere that runs will cost you at least $2500. One that runs and looks good can bring as much as $4000. Check out ytmag.com and check the prices on all John Deere B's.
Didn't make one an 1978
The John Deere model B was intorduced in 1935 in the unstyled version as a version of the model A general-purpose tractor for smaller farmers. In 1939 it was redesigned to be styled by Henry Dreyfuss add style to the tractor. Again in 1947 it was restyled to its ending version the late-styled B. For more information and the full history of the John Deere Model B try www.retiredtractors.com/Modelb.html
On all john deere early/late model b styled tractors that had the 38 in rims should have size 10-38 rear tires or 11.2-38 is the replacement size for the 10-38's to be correct.
There is a plug on the back to the right of the seat behind the axle.