John Deere JD 450 crawler tractors and crawler loaders service manual. SM – 2064. This is in used condition. This was used by a mechanic. There’s a lot of greasy fingerprints on the cover and the exterior of this book. The binding is also separating you can see they put some brads through the binder holes. As well as some duct tape to hold the cover on. This happened a long time ago, and I did not take it apart. Please see photos for condition.