4 HT25 - FOREWORD , Ditch Witch, Jet Trac, Pro Tech, Fluid Miser, Perma-Soil, Modularmatic, Roto Witch, AutoCrowd, and Subsite are registered trademarks of The Charles Machine Works, Inc. Pierce Airrow is a registered trademark of Oklahoma Airrow, Inc. CMW is a trademark of The Charles Machine Works, Inc. by The Charles Machine Works, Inc., Issue Number 1.0/OP-4/00 Operator's Manual Part Number 054-062 Perry, Oklahoma Copyright 2000 p