Scott,

I doubt you have a load tester. Install a known good battery and try to start. If the starter still drags or will not engage, tap it with a hammer. Do not beat the **** out of it. If it tries to start, you need a new starter. Still not making any sounds, need to verify all cable connections starting with the battery. Make sure you remove the negative cable from the frame mount and clean. Have seen a lot of mistakes made due to bad connections on the ground side. Good Luck.

I would first make sure your battery will hold a load and does not have a bad cell next check your starter draw when cranking it is possible that the starter is drawing to much causing the engine to crank slow also check if you can get it started your charging system make sure it is getting approx 14 volts when running.