I looked through the forum and could find no reference to the problem I am facing. I started to mow with my 318 the other day and as soon as I engaged the front PTO (deck) the deck engaged, the pilot light sputtered and the tractor died. I discovered the 20 amp fuse had blown. I replaced the fuse and the tractor started, but when I engaged the PTO the fuse blew immediately. Acts like a direct short. Problem is, the wires are all loomed as from factory and no evidence of any wear and tear. I really hate to tear into the loom as it looks pristine. I replaced the field coil, as the one on the tractor did not test very good (magnet test) and looked pretty ratty. Now, no starter too. When ignition switch is on, and PTO engaged, still pops the fuse. Just guessing looks like a direct short in the PTO engagement wires or coil or pilot light wires. I did replace the PTO switch with a new OEM switch. I checked ground on both sides of the fuse, and both sides are grounded. One about 8 ohms and the other about 400 ohms. I am guessing ground through the ICM, but don't know if that is correct. The leads on the switch test grounded too. I am looking at going through all of the lockout switches (the seat switch is jumpered.) I am not very limber these days, and looking through tri-focals makes diy a challenge. I am hoping this rings a bell with someone, and they can point me to a weak link in the PTO power chain to save me the rigors of searching it out? Any suggestions appreciated, thanks! Could the ICM be involved?