Title says it all.
Coming in for the day boat went into reduced power. 248* and check engine light....killed it quickly but hopefully no long term issues.
No smoke and raw water was still pumping.

Idler is gone. Nothing but the seized bearing left on the mount. Upper starboard side. Belt is still good but it's getting changed also. Water sheriff got us the rest of the way to the dock. Antifreeze burped through the overflow tank....