In Reply to: Spark plug wrench? posted by Andy B (MI) on March 20, 2016 at 20:31:14:
The Ford Tractor spark plug/cylinder head wrench had four versions in its lifetime. The first wrench issued with the early, early 9N's was the Ford Part Number 81-A 17017 wrench, a 6-point box end and an open end. In August,1939, it was revised to the p/n 01A-17017, a 12-point box and open end. In April, 1940, it was revised to the 'suitcase handle' style as shown, p/n 01A-17017-B, both sizes at 12-point style. This was used up until the NAA(Jubilee) Model when the 134 cu/inch overhead valve engine was introduced. Then Ford released the new socket and handle wrench, p/n 2C-17017 -see LINK.
FYI -contact me if interested in an original set of the toolkit - email is open.