well, if it is a N ford, the sn is on the left side of the engine in a 1x4 boss just under the head, and back from the oil filter. that tells you what the engine was. all 1939-1952 9-2-8N engiens swap, so from there you look at the transmission and radius rods. Ibeam rods were used till 44. all 9n/2n used a 3spd tranny, 8n used a 4 spd.
the oil leak at the pto is a worn seal. if you have an early 9n, the assembly for the pto is different fromthe rest, and the best way to fix is a 100$ pto assembly change out.. mind you pay attention to pto shaft size and mower yoke.
mower leak could be bad seal or bad bearing allowing seal to go bad.
does she turn over good? if she turns over but won't start on starter fluid, then check spark.
if no spark, check that you have power to the top of the coil. if yes, put a test lamp inline with the coil and key on and rollengine over.. lamp should blink as points open and close.
points gap at .015
NAPA Ford Tractor Part Numbers:
Front Mount distributor...
Points:
NAPA #CS35
Standard Ignition Blue Streak #FD-6769X (Premium)
Condensor:
NAPA #FA200
Standard Ignition #FD-71
Rotor:
NAPA #FA300
Standard Ignition #FD-104
Distributor Cap:
NAPA #FA350
Standard Ignition #FD-126
Coil IC670 (supposedly 6v, but check resistance or ask)
OEM style ballast resistor ICR40
Solenoid ECH ST540
8N Oil Filter
Napa# FIL-1010
Wix #51010
post pics of your machine, fromt he side, and the engine sn and I can date it for you.
then we can get her starting.
also, is she still 6v with a generator or 12v with an alternator ?
if 12v, is it a 6v coil with 2 resistors or a 12v coil and only the original resistor?