"In the fourth quarter, we now expect end-user demand to be flat and dealers to make further inventory reductions due to global economic uncertainty," said Chief Executive Jim Umpleby.
The company reported third-quarter profits of $1.5 billion, down 13.5 percent from the year-ago period.
Revenues were $12.8 billion, a decline of 5.6 percent.
Shares fell 1.6 percent to $131.56 in pre-market trading.