Click the link for information on the Ford 9n tractor.
9n is older then 8n
A used Ford 9N tractor can be found on such sites as eBay or a specialist tractor site. The Ford 9N was first sold in October 1939 and was designed for use on small farms. All 9N tractors were painted dark grey. One can also buy parts from eBay.
One can purchase a Ford N9 tractor from various sources. Some of those sources are Tractor House, Phils Tractor, Kijiji, Craigslist, Tractor Works and Homestead.
The four speed transmission was a change that was incorporated into the Ford 8N as an improvement over the 9N/2N. The Ford 8N was manufactured between 1947 and 1952.
Dry weight of the Ford 9N is approximately 2340lbs.
GL1 90W Oil, sold at Napa as part# 65-205. Also sold at walmart.
Here is a link to craigslist listings in your area, http://nashville.craigslist.org/search/grd?query=+9N+tractor+&catAbbreviation=grd&minAsk=min&maxAsk=max
It would depend on the condition of the tractor, what the model is, and your location. I'm not sure what models, if any, were being produced in 1943 (teel was scarce during the war and many items were not produced then, including some tractors). There may have been 2 or 3 different ones. The 2N, the 9N, and the 8N were all about that vintage and the 8N was the most common. A Ford 8N tractor on a sale now could go for as little as a few hundred dollars to $3500 or more in cherry shape. Most right now, in average condition with average paint condition will do from $1100 to $2500 in the central US. Maybe slightly less for the 2N or 9N.
Pull start it in a mid range gear. While pushing down on the clutch pedal stab the brakes. It may take a while so make sure you have room to drive. If that does not work you will have to split the tractor at the clutch housing.
You need to get n alone.9n=45 → Divide by 9n=45/9n=5
The equation "9n equals 126" can be written as 9n = 126.