Alright....take plugs out, then remove the shield from back of motor to expose the PTO, turn that counterclockwise, should turn freely, but you mentioned sparks, or didn't turn, think'n starter bad, or motors locked.
You should've just touch the 2 post quickly, if nuth'n, then reposted your finding, you'll need new solenoid, but try what mentioned and repost, stud