I really just wanted to ask the carb question first and maybe start a thread if the solenoid doesn't solve things. I just got a thin enough wrench to get it off. Before I bought the tractor, I confirmed it would fire on starter fluid and continue to run if given an occasional puff but it wouldn't continue at all without the puffs. I got several people at the store to confirm that they didn't know about any problems other than not starting. I accept that I am taking a risk and even if I get it running, there may be other problems. I will start a thread if it's not the solenoid. Good to know you can't always hear the click. Thanks.You really need to start your won post thread. The OP has not been back and probably not many watching.
So you bought it NONE RUNNING FROM TRACTOR SUPPLY FOR 1/2 PRICE? (or was it running and quit you)
Couple tips:
I'm assuming the engine cranks over ok and fast?
Remove the air cleaner and give it a shot of fuel into the carb throat with the throttle set at about 1/2 and no choke. If it's not getting fuel when you give it a prime it will promise to run for little while.
NEXT:
If no promise to start with a prime of fuel, get a spark plug or a spark tester and check for spark when the engine is cranking.
Let us know what you find with the above tests?
If you start a new post come back here and give us a link to your new post.
In answer to your question about the carb solenoid, it should have 12v in all position of the switch except off and sometimes you cannot hear them click.