NOTE:Model 30581: Use this book along with Part No. 95866SL Mitsubishi S4S--DT Engine Service Manual.Model 30582 and 30583: Use this book along with Part No. 04131SL Mitsubishi S4S--Y2DT61TG Engine Ser-vice Manual.Part No. 90743SL, Rev. GService ManualGroundsmasterR 580--DPrefaceThe purpose of this publication is to provide the servicetechnician with information for troubleshooting, testing,and repair of major systems and components on theGroundsmaster 580--D, Model 30580, 30581, 30582,and 30583 (see NOTE above).REFER TO THE TRACTION UNIT AND CUTTINGUNIT OPERATOR’S MANUALS FOR OPERATING,MAINTENANCE AND ADJUSTMENT INSTRUC-TIONS. Space is provided in Chapter 2 of this book toinsert the Operator’s Manuals and Parts Catalogs foryour machine. Replacement Operator’s Manuals areavailable on the internet at www.toro.com or by sendingcomplete Model and Serial Number to:The Toro Company8111 Lyndale Avenue SouthMinneapolis, MN 55420The Toro Company reserves the right to change productspecifications or this publication without notice.This safety symbol means DANGER, WARN-ING, or CAUTION, PERSONAL SAFETYINSTRUCTION. When you see this symbol,carefully read the instructions that follow.Failure to obey the instructions may result inpersonal injury.NOTE: A NOTE will give general information about thecorrect operation, maintenance, service, testing or re-pair of the machine.IMPORTANT: The IMPORTANT notice will give im-portant instructions which must be followed to pre-vent damage to systems or components on themachine.E The Toro Company -- 1989, 1997, 1999, 2003, 2004, 2005, 2007