SCAG STT-28CAT - Manual

1 R Section 1 INTRODUCTION 1.1 Your mower was built to the highest standards in the industr y. However, the prolonged life and maximum efficiency of your mower depends on you following the operating, maintenance and adjustment instructions in this manual. If additional information or service is need...

2 R Section 1 SYMBOLS 1.4 SYMBOL DESCRIPTION SYMBOL DESCRIPTION Choke Transmission Parking Brake 48071S Spinning Blade On/Start Spring Tension on Idler Off/Stop Oil Falling Hazard Thrown Object Hazard Fast Slow Continuously Variable - Linear Cutting Element - Basic Symbol 481039S Pinch Point Cutting...

3 R Section 2 INTRODUCTION 2.1 Your mower is only as safe as the operator. Carelessness or operator error may result in ser ious bodily injur y or death. Hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper training of the personnel involved in the o...

4 R Section 2 If the operator(s) or mechanic(s) cannot read English 7. or Spanish, it is the owner's responsibility to explain this material to them. DO NOT wear loose fitting clothing. Loose clothing, 8. jewelry or long hair could get tangled in moving parts. Do not operate the machine wearing shor...

6 R Section 2 Lower the roll bar only when absolutely necessary. To lower the roll bar, loosen the tension knob on both 1. the left hand and right hand bar. See Figure 2-1. Remove the hairpin cotter pins and remove the two 2. (2) lock pins. See Figure 2-2. Lower the roll bar to the down position. 3....

7 R Section 2 It is recommended that the seat belt be inspected on a daily basis for signs of damage. Any seat belt system that shows cuts, fraying, extreme or unusual wear, significant discoloration due to UV exposure, dirt or stiffness, abrasion to the seat belt webbing, or damage to the buckle, l...

8 R Section 2 MAINTENANCE CONSIDERATIONS & 2.6 STORAGE Never make adjustments to the machine with the 1. engine running unless specifically instructed to do so. If the engine is running, keep hands, feet, and clothing away from moving parts. Disengage drives, lower implement, set parking 2. brak...

9 R Section 2 SAFETY AND INSTRUCTIONAL DECALS 2.7 390S0150F 483395 483406 483407 483402 483444 483154 WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 481568 FORWARD REVERSE F R 483429 483633 ! CAUTION DIESEL FUEL ONLY Avoid injury from burns. Shut off engine before removin...

10 R Section 3 SPECIFICATIONS ENGINE 3.1 General Type ....................................................................................................Heavy Duty Industrial/Commercial DieselBrand ........................................................................................................

11 R Section 3 CuTTEr dECk 3.4 Type ........................... Floating, Adjustable, Anti-scalping, Hybrid Design Combines Out-front and Belly-mount DesignsConstruction ..........................10-gauge steel reinforced with 7-gauge (3/16") Support Plate. 7-gauge (3/16") deck skirt.True Cu...

12 R Section 4 CAUTION Do not attempt to operate this mower unless you have read this manual. Learn the location and purpose of all controls and instruments before you operate this mower. CONTROLS AND INSTRUMENT 4.1 IDENTIFICATION Before operating the mower, familiarize yourself with all mower and e...

13 R Section 4 Hour meter (Figure 4-1). 7. Indicates the number of hours the engine has been operated. It operates whenever the engine is running. Has preset maintenance reminders for engine and hydraulic system oil changes. Will start flashing scheduled maintenance 2 hours before preset time and co...

14 R Section 4 STARTING THE ENGINE 4.4 CAUTION DO NOT USE STARTING FLUIDS. Use of starting fluids in the air intake system may be potentially explosive or cause a “runaway” engine condition t h a t c o u l d r e s u l t i n e n g i n e d a m ag e a n d / o r personal injury. Be sure the fuel shutoff...

15 R Section 4 REvERSE TRAvEL CAUTION Disengage power to the mower before backing up. Do not mow in reverse unless absolutely necessary and then only after observation of the entire area behind the mower. CAUTION Before backing up, observe the rear for persons and obstructions. Clear the area before...

16 R Section 4 HILLSIDE OPERATION 4.7 WARNING 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 oper...

17 R Section 4 MOvING MOWER WITH ENGINE 4.11 STOPPED To “free-wheel” or move the mower around without the engine running, place the dump valve levers in the FREE-WHEEL position (Figure 4-4). Disengage the parking brake and move the mower by hand. The dump valve levers must be returned to the DRIVE p...

18 R Section 4 CUTTING HEIG HT 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 481543 390S0151-1 DECK RELEASE LEVER Deck Release Lever Figure 4-6. ADJUSTING THE HEIGHT ADJUST 4.14 PEDAL Position the seat to the desired location. 1. While in the operator's position without the engine 2. running, push down on the hei...

19 R Section 4 TOWING (OPTIONAL HITCH 4.16 ACCESSORY) NEVER allow children or others in or on towed 1. equipment. Tow only with a machine that has a hitch designed 2. for towing. Do not attach towed equipment except at the hitch point. Follow manufacturer's recommendations for weight 3. limit for to...

20 R Section 5 CONDITION CAUSE CURE STRINGERS - OCCASIONAL BLADES OF UNCUT GRASS Width of Deck SGB020 Low engine RPM Run engine at full RPM Ground speed too fast Slow speed to adjust for conditions Wet grass Cut grass after it has dried out Dull blades, incorrect sharpening Sharpen blades Deck plugg...

23 R Section 6 PARkING BRAkE ADJUSTMENT 6.1 WARNING Do not operate the mower if the parking brake is not operable. Possible severe injury could result. The parking brake linkage should be adjusted whenever the parking brake lever is placed in the “ENGAGE” position and the parking brake will allow th...

24 R Section 6 TRAvEL ADJUSTMENTS 6.2 Neutral or tracking adjustments will need to be made if: A. The steering control levers are in the neutral position and the machine creeps forward or backward. (Neutral Adjustment, See Page 26). B. The steering control levers are in the full forward position and...

25 R Section 6 Actuate the steering control levers forward and 6. reverse several times and return them to the neutral position. Check that the drive wheels remained in neutral and 7. readjust if necessary. Check that the steering control levers hit the stop 8. before the pumps reach full stroke. Ad...

26 R Section 6 BELT ALIGNMENT 6.5 Belt alignment is impor tant for proper performance of your Scag mower. If you experience frequent belt wear or breakage, see your authorized Scag service center for belt adjustment. CUTTER DECk ADJUSTMENTS 6.6 Cutter deck level, pitch and height are set at the fact...

27 R Section 6 - Note - To prevent the cutter deck from teetering, all four (4) cutter deck hanging chains must have tension on them. If all four chains do not have tension on them and the deck teeters, you must readjust the cutter deck as outlined in the procedures above. CUTTER DECk HEIGHT The cut...

28 R Section 6 CUSTOM-CUT BAFFLE ADJUSTMENT The Custom-Cut Baffle is designed to deliver optimum airflow and superior cutting performance in any type of grass. The Custom-Cut Baffle can be raised or lowered to precisely tailor the deck's performance for the type of grass being cut. The baffle can be...

29 R Section 7 MAINTENANCE CHART - RECOMMENDED SERvICE INTERvALS 7.1 HOURS PROCEDURE COMMENTS BREAk-IN (FIRST 10) 8 40 100 200 500 X C h e c k a l l h a r d w a r e f o r tightness X Check hydraulic oil level See paragraph 7.3 X C h e c k a l l b e l t s f o r p r o p e r alignment See paragraph 7.8...

30 R Section 7 MAINTENANCE CHART - RECOMMENDED SERvICE INTERvALS (CONT'D) HOURS PROCEDURE COMMENTS BREAk-IN (FIRST 10) 8 40 100 200 500 X Apply grease to fittings See paragraph 7.2 X Check hardware for tightness X Change engine oil filter See paragraph 7.4 X Check hydraulic oil level See paragraph 7...

31 R Section 7 GREASE FITTING LUBRICATION LUBRICANT / INTERVAL LITHIUM MP WHITE GREASE 2125( 40 HOURS / WEEKLY ) CHASSIS GREASE( 100 HOURS / BI-MONTHLY ) CHASSIS GREASE( 200 HOURS / MONTHLY ) 3 1 5 4 6 2 CHASSIS GREASE( 500 HOURS / YEARLY ) STT-EFI Grease Points 1 7 4 8 2 9 3 8 Lubrication Fitting P...

32 R Section 7 B. CHANGING HYDRAULIC OIL The hydraulic oil should be changed after every 500 hours or annually, whichever occurs first. The oil should also be changed if the color of the fluid has become black or milky. A black color and/or a rancid odor usually indicates possible overheating of the...

33 R Section 7 C. CHANGING ENGINE OIL FILTER After the first 20 hours of operation, replace the engine oil filter. Thereafter, replace the oil filter after every 200 hours of operation or every month, whichever occurs first. Refer to Engine Operator’s Manual for instructions (See Figure 7-4). ENGINE...

34 R Section 7 B. REPLACING IN-LINE FUEL FILTER ELEMENTS - Note - The fuel filter is located below the air filter. Figure 7-5 is for illustration purposes only. The engine fuel filter (Figure 7-5) should be replaced after every 500 hours of operation or annually, whichever occurs first. Close the sh...

35 R Section 7 B. CHARGING THE BATTERY R e fe r t o t h e b a t t e r y c h a r g e r ’s m a nu a l fo r s p e c i f i c instructions. Under normal conditions the engine’s alternator will have no problem keeping a charge on the battery. If the battery has been completely discharged for a long period...

36 R Section 7 B. BLADE SHARPENING - Note - If possible, use a file to sharpen the blade. Using a wheel grinder may burn the blade. - Note - DO NOT sharpen the blades beyond 1/3 of the width of the blade. See Figure 7-6. Sharpen the cutting edge at the same bevel as the 1. original. See Figure 7-6. ...

37 R Section 7 CUTTER DECk GEARBOx 7.11 A. CHECkING LUBRICANT LEvEL CAUTION The cutter deck gearbox can reach high operating temperatures. Allow the cutter deck gearbox to cool before servicing. 390S0161 CUTTER DECK GEARBOX CHECKPLUG Cutter Deck Gearbox Figure 7-8. The fluid level in the cutter deck...

38 R Section 7 Fill to Bottom ofFiller Neck 030467-13 Coolant Level in Radiator Figure 7-9. Replace the radiator cap. Push down on the cap and 3. turn clockwise until it stops. - Note - The cooling system should be flushed and the coolant replaced every 500 hours of operation or annually. See your S...

39 R Section 8 SCAG APPROvED ATTACHMENTS AND 8.1 ACCESSORIES. Attachments and accessor ies manufactured by companies other than Scag Power Equipment are not approved for use on this machine. Scag approved attachments and accessories: GC-STT-61V (p/n 9060) • requires GC-28 CAT Install (p/n 9072C) GC-...

62 R Section 8 REPLACEMENT DECALS AND INFORMATION PLATES 1 2 5 3 7 6 4 9 16 18 8 STTKBD 2008 Decals 1 WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 481568 FORWARD REVERSE F R 13 Heavy-Duty Commercial 481971 12 17 10 11 SLOW FAST 483358 MANUFACTURED UNDER ONE OR MORE OF T...

LIMITED WARRANTY - COMMERCIAL EqUIPMENT Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgment of Scag, to be defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealer without charge for parts an...

© 2008 Scag Power Equipment Division of Metalcraft of Mayville, Inc.