The 30 amp fuse keeps blowing every time I try to start the engine. I've checked the battery cables and they are connected to the correct post. I've checked the wiring of the solenoid and they are correct. What could be the possible cause?

I've replaced the battery and the solenoid on the 19 hp motor for a Toro mower. I've checked the connections on the battery and the solenoid and they are correct, but every time I attempt to start the engine the 30 amp fuse blows. What else could be the cause for the fuse blowing?

What would cause the 30 amp fuse to continue to blow on my Toro mower? I've replaced the battery and the solenoid and the connections are correct.

A short is the next probable culprit. Check for any frayed wires or bad switches

What would happen to the solenoid if you hooked the battery wires backwords?

Boyce, all of your posts are about the same issue so don't start a new post with every question. Readers will miss out on the scope of previous discussions.

Disconnect the wire at the starter or starter wire at solenoid and try again, Some solenoids/relays have a Diode across them, they can short out.