Maybe no good new, maybe wrong type. Take it off, touch small terminal to battery post (either = or -) and first one large terminal to other battery post, if no pull-in, try the other large terminal. If neither pull-in, then it is either no good or wrong type for your tractor.
JMOR, it didn't past this test. but did the other ??
i just got done repairing the original one from the tractor. drilled the rivets out and what i call the plunger was rusted. cleaned it up and it kicks good.
also repaired an 8n one i had laying around. disassembled it and the wire which goes to the small terminal from the winding was loose. backed the small terminal up and placed wire under the screw head. kicks good also.
Im still studying and learning and its a brain teaser on the new solenoids. i will install the original i repaired tomorrow and see what happens. it and the new one looks identical, except the small terminal placement and the "I" and "S" being different.