It should start without the seat switch jumpered.
jumpering out your set switch may cause your hour meter to run all the time and having you wonder why your battery is always dead.
I still have most of that tractor, + enough parts to build another one, I bought a hood off ebay from a guy here in Michigan about 100 miles away
Joes Outdoor Power on eBay
check all your connections
My loader tractor used to give me trouble sometimes, reach under the dash and touch the plug on the ignition switch fires right up
you may need to slide the hood back or the dash (that you replaced) forward to get your hood to close
The ignition switch, light switch, and pto switches are good for going bad. Especially if they are stored outside. Just replace all of them on my main tractor last summer.
And even though I have replaced the ignition switch I have no power to the coil while cranking. It's not until I let off the switch that it will fire. :\
Edited by Wm McNett, November 01, 2014 - 07:59 PM.