I have a 425 that is loud even with ear protection on it. The local JD repair shop said it is an exhaust manifold that needs replaced and wants $1500 (parts and labor) to fix this.
1) where are instructions on how to replace this part
2) where can I get a used or aftermarket part
I have done research on #2 (not much shows up on #1) and looks like about $300-350 for a 'rebuilt' or $100 for used (usually with some holes).