That's the diagram I have. Right now I'm just trying to get it to start with the push button that's mounted in the panel. It starts normally with the pull cord and it also had a push button switch when I got the mower. The only wires on the whole mower are the black wire to the starter, the white wire to the alternator, and the two battery cables. It does not have a solenoid mounted anywhere. I'm not sure if it's needed for the push button switch. On the push button switch I remember it has the positive battery cable and I think the starter wire hooked up to it. I can't remember if it has 2 or 3 terminals on the push button, it's being stored at another location so I can't go refer to it right now. I was just wanting to get the push button hooked up the proper way and start using it to mow until I get the deck switch and the interlock ordered. I haven't been able to find a source to see how to properly hook up the push button switch. Anyone know how?
ok here is the problem
they converted the mower to electric start but did not do it correctly
the starter and alternator is there already so thats good.
now you need to run 2 new wires to the front key switch and replace it with a new key switch with the electric start function (part number 7017817YP average cost is $12-$15)
i do this all the time to snapper rear engine riders and nothing is hard but it needs to be done the right way
you also need to understand all the safeties, seat switch blade engaged switch, brake switch, they all simply ground out the magneto so you can turn it over forever and it will never start if the brake pedal isnt pressed or locked in place because you wont have any spark.
you need to buy a starter solenoid (part number 7075671YP average cost is $10-$12) and it mounts in the compartment by the gear lever, you will see two small holes there that are pre threaded for 3/8" hex head screw bolts to mount it in place. buy the starter solenoid that has one coil connection or you will need to jumper the other one to the 3/8" bolts for the solenoid to supply ground for the coil to work.
once you have the coil in place you need to add a 30 amp inline fuse from the positive lug hooked to the battery and also run a jumper from there to the alternator output wire to recharge the battery
the other side of the starter solenoid simply runs to the starter.
from the other end of the inline fuse you hook a wire to it that runs to the key switch and then one back that connects to the starter solenoid coil wire.
the way to run the new wires is to unplug the two wires from key switch and cut the plug off right close to the plug, then tie a string to the wires and pull them back through the tube. once you have it out you can slide the two new wires inside the plastic sheath by hand, jiggling it as needed. when the wires come out the end tie the string around all 4 wires and pull the wires and sheath back through the tube to the switch taking your time and add spade connectors to all 4 wires to connect to the new key switch.
note - you dont want to make the connections to the inline fuse or starter solenoid until after you finish rerunning the wires to the key switch and allowing enough slack to make a loop over it so as not to bind with the brake cable. same goes for alternator and starter wires
now you have everything set up correctly and safe