moisture in gas, bad spark pulg, no gas flow,
remove plug squirt some gas into hole replace plug will it start? Battery cable, starter solenoid, ignition switch, bad ground, blown main fuse, short in the harness.
I assume you are talking about the starter solenoid: Follow the positive battery cable from the battery - the other end will be connected to the starter solenoid.
your starter is pulling too much energy from your battery. Either the battery is too small or your starter needs attention.
yes.
Perhaps it is the starter drive. That happened to my riding mower. Got the drive replaced, works fine.
the magneto
Your battery might be dead or the starter may be no good or it might be a bad selonoid .
Positive battery cable, (red) goes to it and again comes off it and to the starter. Just follow the red battery cable. usually under the hood.
which 42" Craftsman riding mower is made by Huskvarna
Look for loose connections at the battery, starter solenoid, starter and switch. If all connections are good, the starter solenoid probably needs to be replaced.
12
totally
No, you can charge it on the mower and you do not have to remove it or disconnect the cables.