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Download Manual OPERATOR’S MANUAL STHM Model: STHM-23CV Congratulations on owning a Scag mower! This manual contains the operating instructions and safety information for your Scag mower. Reading this manual can provide you with assistance in maintenance and adjustment procedures to keep your mower performing to maximum efficiency. The specific models that this book covers are listed on the inside cover. Before operating your machine, please read all the information enclosed. © 2008 PART NO. 03223 Rev. 1 Scag Power Equipment PRINTED 3/2008 Division of Metalcraft of Mayville, Inc. PRINTED IN USA WARNING FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT IN SERIOUS INJURY OR DEATH. • Read this manual completely as well as other manuals that came with your mower. • DO NOT operate on steep slopes. To check a slope, attempt to back up it (with the cutter deck down). If the machine can back up the slope without the wheels slipping, reduce speed and use extreme caution. • Under no circumstances should the machine be operated on slopes greater than 15 degrees. ALWAYS FOLLOW OSHA APPROVED OPERATION. • DO NOT mow on wet grass. Wet grass reduces traction and steering control. • Keep all shields in place, especially the grass discharge chute. • Before performing any maintenance or service, stop the machine and remove the spark plug wire and ignition key. • If a mechanism becomes clogged, stop the engine before cleaning. • Keep hands, feet and clothing away from power-driven parts. • Keep others off the mower (only one person at a time) REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR! HAZARD control AND accident PREVENTION ARE DEPENDENT UPON THE awareness, concern, prudence, and proper training of the personnel inVolVed in the operation, transport, MAINTENANCE, AND storage OF THE EQUIPMENT. This manual covers the operating instructions and illustrated parts list for: STHM-23CV with a serial number of D6300001 to D6399999 SM-61V with a serial number of D8900001 to D8999999 SM-72A with a serial number of D9000001 to D9099999 Always use the entire serial number listed on the serial number tag when referring to this product. Table of Contents R TABLE OF CONTENTS SECTION 1 - GENERAL INFORMATION ...................................................................................1 1.1 Introduction ...........................................................................................................................................1 1.2 DIRECTION REFERENCE ...........................................................................................................................1 1.3 SERVICING THE ENGINE AND DRIVE TRAIN COMPONENTS .................................................................1 1.4 SYMBOLS ....................................................................................................................................................2 SECTION 2 - SAFETY INFORMATION ......................................................................................3 2.1 Introduction ...........................................................................................................................................3 2.2 SIGNAL WORDS ..........................................................................................................................................3 2.3 BEFORE Operation Considerations ................................................................................................3 2.4 Operation Considerations ................................................................................................................4 2.5 MAINTENANCE Considerations & Storage ....................................................................................6 2.6 SAFETY AND Instructional DECALS .................................................................................................7 SECTION 3 - SPECIFICATIONS ................................................................................................8 3.1 ENGINE ........................................................................................................................................................8 3.2 ELECTRICAL ...............................................................................................................................................8 3.3 Power HEAD .............................................................................................................................................8 3.4 CUTTER DECK ............................................................................................................................................9 3.5 Hydraulic SYSTEM .................................................................................................................................9 3.6 WEIGHTS AND DIMENSIONS .....................................................................................................................9 3.7 ProductiVITY ...........................................................................................................................................9 SECTION 4 - OPERATING INSTRUCTIONS ...........................................................................10 4.1 Controls AND Instrument Identification .................................................................................10 4.2 SAFETY INTERLOCK SYSTEM ................................................................................................................11 4.3 INITIAL RUN-IN Procedures ................................................................................................................11 4.4 Starting THE ENGINE ...........................................................................................................................11 4.5 Ground TRAVEL .....................................................................................................................................12 4.6 Engaging THE DECK DRIVE (CUTTER BLADES) ................................................................................13 4.7 HILLSIDE Operation ..............................................................................................................................13 4.8 PARKING THE Mower .............................................................................................................................14 4.9 AFTER Operation ..................................................................................................................................14 4.10 REMOVING CLOGGED Material ........................................................................................................14 4.11 MOVING Mower WITH ENGINE Stopped ..........................................................................................14 4.12 Recommendations FOR Mowing ....................................................................................................15 4.13 Towing (OPTIONAL HITCH Accessory)...........................................................................................15 SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ...............................................16 I R Table of Contents SECTION 6 - ADJUSTMENTS .................................................................................................19 6.1 PARKING BRAKE ADJUSTMENT ............................................................................................................19 6.2 NEUTRAL ADJUSTMENT .........................................................................................................................19 6.3 Throttle Control AND CHOKE ADJUSTMENTS ............................................................................20 6.4 Belt ADJUSTMENT .................................................................................................................................20 6.5 Belt ALIGNMENT .....................................................................................................................................21 6.6 CUTTER DECK ADJUSTMENTS ..............................................................................................................21 6.7 Custom-CUT BAFFLE ADJUSTMENT ...................................................................................................23 SECTION 7 - MAINTENANCE ..................................................................................................25 7.1 MAINTENANCE Chart - RECOMMENDED SERVICE INTERVALS ......................................................25 7.2 Lubrication ............................................................................................................................................26 7.3 Hydraulic SYSTEM ...............................................................................................................................27 7.4 ENGINE OIL ...............................................................................................................................................28 7.5 ENGINE FUEL SYSTEM ............................................................................................................................28 7.6 ENGINE AIR CLEANER .............................................................................................................................29 7.7 DRIVE Belt ...............................................................................................................................................29 7.8 Battery ....................................................................................................................................................30 7.9 CUTTER
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