I have a 1997 Simplicty bradmoor tractor. I getting a black soot like powder on the side of my hood and all over the mower deck. I only get it when the blade is runs this clutch dust or someting else. It's not coming from the exhaust.

SOURCE: removing tractor deck to change belt and blades?

if i am thinking of the right model you may be able to get away with first taking off the blade, then to remove the deck should be a number of bolts under the chassis and on top of the deck where it meets the frame... you can get your parts here if your having trouble finding them
 http://www.ordertree.com/modelinfo/MTD/13A1674G401-%281997%29/62.13A1674G401-%281997%29.1.1.1.html

SOURCE: Craftsman 42" mower deck won't disengage

Try pulling on the cable coming down to deck. This cable might be your problem. Also check that the spring on the end of this cable is present and functional.

SOURCE: Knocking in mower deck or belt clutch when engaging blades, motor bogs / slows down

YOU MAY HAVE A BENT BLADE OR EXESSEIVE BUILD UP UNDER THE DECK

Wade Mobley

• 513 Answers
• Posted on Jun 28, 2009

SOURCE: Craftsman riding mower blades will not engage

maybe the safty switch under seat might be starting to go out if that switch doesn't work the blades wont come on at all for safety