If it's good enough for JJ then it's good enough for me. JJ and Rob know all this stuff but if any newbie is following me here:
if it is 12v.. a napa IC 14SB coil is proper.. with no resistors.
if it is 6v, a IC8 coil is proper.
if it uses a filter element.. a napa 1004 ( should cross to a fram ch6pl.. but i know 1004 napa is corrrect ).
if it is a spin on.. then the following fit.
napa 1452 or a 1515 though latter is an auto application.. former is better.
ps.. don't forget to remove and clean the oil bath air filter. it likes a diesel bath.. and crankcase weight oil in the cup. The steering box would love some lube. It is reccomended 0 or 00 ep grease. jd cornhead grease is a 0 ep.. comes in a tube for your grease gun. cnh dealers sell an ep00 as well, pourable.. and many lawn equip dealers.. especially snapper.. sell a snapper or stens pourable ep 00 grease in a squeezy bottle.Pump in till it extrudes under the steering wheel, then you know the top bearing is happy.
Check the pto shaft immediately for thrust play in/out.. or side play.. if it has either.. pull it during oil change. 4 bolts..e tc. and renew the bearing and seal and check the bearing carrier to see if it lost snap rings or is damaged. likely need a wear ring too. Easy 30m job.
Connect the tractor to a $1MM computer and read out the ECM module.... psst, the new JD big tier 4 tractors run like chit. hahahahhahaa, I slay myself.