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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: STT52v-27CH with a serial number of D7400001 to D7499999 STT61v-27CH...
Table of Contents 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...
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Table of Contents SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ..........21 SECTION 6 - ADJUSTMENTS ....................24 6.1 PARKING BRAKE ADJUSTMENT ......................24 6.2 TRAvEL ADJUSTMENTS ..........................25 6.3 THROTTLE CONTROL AND CHOKE ADJUSTMENTS ................26 6.4 BELT ADJUSTMENT ..........................26 6.5 BELT ALIGNMENT .............................27 6.6 CUTTER DECK ADJUSTMENTS ......................27 6.7 CUSTOM-CUT BAFFLE ADJUSTMENT ....................28 6.8 ELECTRIC CLUTCH ADJUSTMENT ......................31 SECTION 7 -...
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Table of Contents BDP-16A HYDRAULIC PUMP ASSEMBLY .....................72 BDP-16A HYDRAULIC PUMP ASSEMBLY WITH COOLING FAN(29DFI & 35BvAC)) .........74 ELECTRICAL SYSTEM (KOHLER & BRIGGS & STRATTON)...............76 ELECTRICAL SYSTEM - 27HP KAWASAKI ....................78 ELECTRICAL SYSTEM - 29DFI KAWASAKI ....................80 REPLACEMENT DECALS AND INFORMATION PLATES ................82 STT ELECTRICAL SCHEMATIC (KOHLER) ....................84 STT ELECTRICAL SCHEMATIC (27HP KAWASAKI) ..................85 ELECTRICAL SCHEMATIC - 29DFI KAWASAKI ....................86...
Scag service parts. All information is based upon product information available - IMPORTANT - at the time of approval for printing. Scag Power Equipment The replacement of any part on this product reserves the right to make changes at any time without by other than the manufacturer's authorized notice and without incurring any obligation.
Section 1 SYMBOLS SYMBOL DESCRIPTION SYMBOL DESCRIPTION Choke Transmission Parking Brake Spinning Blade 48071S On/Start Spring Tension on Idler Off/Stop Falling Hazard Thrown Object Hazard Fast Slow Continuously Variable - Linear Cutting Element - Basic Symbol Pinch Point Cutting Element - Engage 481039S Hour meter/Elapsed Operating Hours Cutting Element - Disengage...
Section 2 SAFETY INFORMATION INTRODUCTION DANGER Your mower is only as safe as the operator. Carelessness or operator error may result in serious bodily injury or death. Hazard control and accident prevention are The signal word “DANGER” denotes that an extremely dependent upon the awareness, concern, prudence, and hazardous situation exists on or near the machine that proper training of the personnel involved in the operation,...
Section 2 If the operator(s) or mechanic(s) cannot read English DO NOT add fuel to a running or hot engine. Allow or Spanish, it is the owner's responsibility to explain the engine to cool for several minutes before adding this material to them. fuel.
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Section 2 To prevent tipping or loss of control, start and stop The machine and attachments should be stopped smoothly, avoid unnecessary turns and travel at and inspected for damage after striking a foreign reduced speed. object, and damage should be repaired before restarting and operating the machine.
Section 2 ROLL-OvER PROTECTION SYSTEM Any or all parts of the Roll-Over Protection System MUST NOT be removed. Failure to adhere to this guideline could result in injury or death. WARNING FOLDABLE ROLL-OvER PROTECTION SYSTEM (IF EqUIPPED) Reduce speed when turning, operating on slopes, slick or wet surfaces.
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Section 2 Remove the hairpin cotter pins and remove the two WARNING (2) lock pins. See Figure 2-2. Lower the roll bar to the down position. Failure to properly inspect and maintain the seat To raise the roll bar, lift the bar to the upright belt can cause serious injury or loss of life.
Section 2 MAINTENANCE CONSIDERATIONS & WARNING STORAGE Never make adjustments to the machine with the Hydraulic fluid is under high pressure. Keep body engine running unless specifically instructed to do and hands away from pinholes or nozzles that so. If the engine is running, keep hands, feet, and eject hydraulic fluid under high pressure.
Section 3 POWER HEAD Drive System ....Hydraulic Drive with Two Variable Displacement Pumps and Two Cast-Iron High Torque Motors Hydrostatic Pumps ..............Two Hydro-Gear™ 16 cc/rev. Pumps with Dump Valves Drive Wheel Motors: ......Two Hydro-Gear™ or Parker Model TG 15 cu. inch Cast-Iron High Torque Motors Steering/Travel Control ...................
Section 4 OPERATING INSTRUCTIONS Mower Deck Switch (Figure 4-1). Used to engage CAUTION and disengage the mower drive system. Pulling up on the switch will engage the deck drive. Pushing down on the switch will disengage the deck drive. Do not attempt to operate this mower unless you Engine Choke Control (Figure 4-1).
Section 4 Hourmeter (Figure 4-1). Cutting Height Adjustment (Figure 4-1). Indicates the number of Used to set the cutter deck at the desired cutting height. hours the engine has been operated. It only operates when the engine is running. Has preset maintenance Deck Release Lever (Figure 4-1).
Section 4 INITIAL RUN-IN PROCEDURES Allow engine to warm before operating the mower. GROUND TRAvEL AND STEERING FIRST DAY OF USE OR APPROxIMATELY 20 HOURS Check all belts for proper alignment and wear at 2, 4 - IMPORTANT - and 8 hours. If you are not familiar with the operation of a machine with lever steering and/or hydrostatic Change the engine oil and oil filter after the first 20...
Section 4 - IMPORTANT - To stop the reverse travel, allow the steering control levers to return to the neutral position. If the mower is to be Do not travel forward over a curb. The mower will parked, place the handles in the neutral lock position and hang up on the curb.
Section 4 HILLSIDE OPERATION AFTER OPERATION Wash the entire mower after each use. Do not WARNING use high pressure spray or direct the spray onto electrical components. - IMPORTANT - DO NOT operate on steep slopes. To check a slope, attempt to back up it (with the cutter deck down).
Section 4 4.11 MOvING MOWER WITH ENGINE Keep mower and discharge chute clean. STOPPED When mowing wet or tall grass, mow the grass twice. Raise the mower to the highest setting for the first pass and then make a second pass to the desired To “free-wheel”...
Section 4 Insert the lanyard pin into the cutting height index at the desired cutting height. Push forward on the deck TENSION lift foot lever, hold in place and pull back on the deck KNOB release lever. See Figure 4-6. Slowly release the foot pedal.
Section 4 4.16 TOWING (OPTIONAL HITCH ACCESSORY) NEVER allow children or others in or on towed equipment. Tow only with a machine that has a hitch designed for towing. Do not attach towed equipment except at the hitch point. Follow manufacturer's recommendations for weight limit for towed equipment.
Section 5 TROUBLESHOOTING CUTTING CONDITIONS CONDITION CAUSE CURE STRINGERS - OCCASIONAL Low engine RPM Run engine at full RPM BLADES OF UNCUT GRASS 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 plugged, grass accumulation...
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Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION CAUSE CURE U N E v E N C U T O N F L AT Lift worn from blade Replace blade GROUND - WAvY HIGH-LOW APPEARANCE, SCALLOPED Blade upside down Mount with cutting edge toward ground CUT, OR ROUGH CONTOUR Deck plugged, grass accumulation Clean underside of deck...
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Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION CAUSE CURE SCALPING - BLADES HITTING Low tire pressures Check and adjust pressures DIRT OR CUTTING vERY CLOSE TO THE GROUND Ground speed too fast Slow speed to adjust for conditions May need to reduce ground speed, raise Cutting too low cutting height, change direction of cut, and/or change pitch and level...
Section 6 ADJUSTMENTS PARKING BRAKE ADJUSTMENT - NOTe - If this procedure does not achieve proper brake adjustment, please contact your authorized Scag WARNING dealer. LOOSEN HERE Do not operate the mower if the parking brake is not operable. Possible severe injury could result.
Section 6 TRAvEL ADJUSTMENTS LOOSEN HERE 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. See Neutral Adjustment on page 25 (next procedure). B.
Section 6 - NOTe - Actuate the steering control levers forward and reverse several times and return them to the neutral If after making the adjustment as outlined in step position. 1A, the machine creeps forward or backward, perform the neutral adjustment. See Neutral Check that the drive wheels remained in neutral and Adjustment on page 25.
Section 6 BELT ALIGNMENT Loosen the two (2) elastic stop nuts. Adjust the bolt up or down on the adjustment bracket to adjust the cutter deck until the distance from the bottom Belt alignment is important for proper performance of of the cutter deck to the floor is the same as the your Scag mower.
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.
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Section 6 - NOTe - B. 3-1/2" Position - (See Figure 6-9). Baffle is installed using the middle set of holes on the front baffle welded Hardware location used in the illustrations are for inside the cutter deck. Can be used for general purpose reference only.
Section 6 ELECTRIC CLUTCH ADJUSTMENT ADJUSTMENT NUTS The electric clutch serves two functions in the operation of the mower. In addition to starting and stopping the power flow to the cutter blades, the clutch also acts as a brake to assist in stopping blade rotation when the PTO is switched off or the operator presence circuit is interrupted.
Section 7 MAINTENANCE MAINTENANCE CHART - RECOMMENDED SERvICE INTERvALS HOURS PROCEDURE COMMENTS BREAK-IN (FIRST 10) Check all hardware for tightness Check hydraulic oil level See paragraph 7.3 C h e c k a l l b e l t s f o r p r o p e r See paragraph 7.8 alignment Change engine oil and filter...
Section 7 HYDRAULIC SYSTEM - IMPORTANT - The hydraulic oil should be changed if you notice the presence of water or a rancid odor to the A. CHECKING HYDRAULIC OIL LEvEL hydraulic oil. The hydraulic oil level should be checked after the first 10 Park the mower on a level surface and stop the hours of operation.
Section 7 C. CHANGING HYDRAULIC OIL FILTER ENGINE OIL FILTER ELEMENT The hydraulic oil filter should be changed after every 500 hours of operation or annually, whichever occurs first. Remove the oil filter element and properly discard it. See Figure 7-3. Fill the new filter with clean oil and install the filter.
Section 7 Extinguish all cigarettes, cigars, pipes and other sources of ignition. Use only an approved gasoline container. Never remove the gas cap or add fuel with the engine running. Allow the engine to completely cool before fueling. Never fuel the machine indoors or in an enclosed trailer.
Section 7 BATTERY A. CHARGING THE BATTERY Refer to the battery charger’s manual for specific WARNING instructions. Under normal conditions the engine’s alternator will have no problem keeping a charge on the battery. If the battery Lead-acid batteries produce flammable and has been completely discharged for a long period of time, explosive gases.
Section 7 DRIvE BELTS B. BLADE SHARPENING All drive belts are spring-loaded and self-tensioning, - NOTe - however after the first 2, 4, 8 and 10 hours of operation, If possible, use a file to sharpen the blade. Using the belts should be checked for proper alignment and a wheel grinder may burn the blade.
Section 7 - NOTe - 7.10 TIRES The front of the machine will have to be raised slightly to remove the blade bolt from the cutter Check the tire pressures after every 8 hours of operation spindle. or daily. Caster Wheels Flat Free To install the new cutter blade, put the flat washer Drive Wheels...
Section 7 B. CHANGING LUBRICANT Fill to Bottom of Filler Neck The lubricant in the cutter deck gearbox should be changed after every 500 hours of operation or yearly, whichever occurs first. Place a suitable container beneath the cutter deck gearbox and locate the gearbox drain plug.
Section 7 C. CHECKING THE FAN BELT TENSION (LIqUID- COOLED ENGINES ONLY) Periodically check the fan belt tension. The belt should deflect 1/2" with 10 pounds of pressure. See your Scag dealer if the belt is in need of adjustment or replacement. 7.13 BODY, DECK, AND UPHOLSTERY CAUTION...
Section 8 ILLUSTRATED PARTS LIST SCAG APPROvED ATTACHMENTS AND ACCESSORIES Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine. Scag approved attachments and accessories: • GC-STT (p/n 9059, 9060, 9039) •...
Section 8 STT ROLL-OvER PROTECTION SYSTEM - without SUSPENSION SEAT STT 2007 ROPS...
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Section 8 STT ROLL-OvER PROTECTION SYSTEM - without SUSPENSION SEAT Ref. Part No. Description 9514 STT, ROPS Acessory (incl. all items below) 04001-82 Bolt, Hex Head 1/2-13 x 4-1/2” 04021-19 Nut, Center Lock 1/2-13 04040-13 Flatwasher, 1/2 (.562 x 1.375 x .109”) 483594 Retractable Seat Belt 04001-145...
Section 8 STT ROLL-OvER PROTECTION SYSTEM - with SUSPENSION SEAT STT 2007 FOLD ROPS...
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Section 8 STT ROLL-OvER PROTECTION SYSTEM - with SUSPENSION SEAT Ref. Part No. Description 9514 STT, ROPS Accessory (incl. all items below) 04001-82 Bolt, Hex Head 1/2-13 x 4-1/2” 04021-19 Nut, Center Lock 1/2-13 04001-178 Bolt, Hex Head 7/16-20 x 1” 04040-11 Flatwasher, 7/16 (.500 x 1.25 x .083”) 483594...
Section 8 WHEEL MOTOR PART NUMBER IDENTIFICATION HYDRO-GEAR Part No. Model No.. Serial Number Range 483190 STT52V-27CH D7400001 to D7400525 STT61V-27CH D7500001 to D7501610 STT61V-27KA E4200001 to E4200400 PARKER Part No. Model No.. Serial Number Range 482639 STT52V-27CH D7400526 to D7499999...
Section 8 FUEL AND HYDRAULIC SYSTEM - 29DFI KAWASAKI DUMP VALVE To Injector 43 (2) 43 (2) 44 45 50 48 47 To Back Side of Reservoir (Not Shown) Fuel Return 2002 STT F&HS-DFI.eps...
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Section 8 FUEL AND HYDRAULIC SYSTEM - 29DFI KAWASAKI Ref. Ref. Part No. Description Part No. Description 423485 Support Bracket, Hydraulic Tank 04110-01 U-Nut 1/4-20 481611 Hose Assembly, Pump 48136-13 Hose Clamp, 0.69” Dia. 48572-04 Union, 3/4”-16 JIC x 3/4”-16 O-Ring 04001-03 Bolt, Hex Head 1/4-20 x 2.0”...
Section 8 REPLACEMENT DECALS AND INFORMATION PLATES MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING PATENTS: 4,487,006 4,885,903 4,920,733 4,967,543 4,991,382 4,998,948 5,042,239 5,117,617 5,133,176 5,826,416 5,832,708 5,865,018 6,192,666 6,766,633 6,892,519 6,996,962 7,065,946 7,197,863 7,237,374 7,373,768 PATENTS PENDING Hea vy- Duty FORWARD Comm e rcial REvERSE...
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Section 8 REPLACEMENT DECALS AND INFORMATION PLATES Ref. Part No. Description 483192 Decal, Danger - Spinning Blades 483406 Decal, Warning - Rotating Blades 483200 Decal, 52 Velocity Plus 483201 Decal, 61 Velocity Plus 481956 Decal, 72 Advantage 483693 Decal, 72 Velocity Plus 483397 Decal, Fuel Tank 483044...
Cutter decks are warranted against cracking for a period of three (3) years. (parts and labor 1st and 2nd year; parts only 3rd year.) The repair or replacement of the cutter deck will be at the option of Scag Power Equipment. We reserve the right to request compo- nents for evaluation.
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(Piezas y mano de obra) (La garantía de dos años no incluye las conexiones, mangueras, las correas de transmisión). La reparación o el reemplazo de la bomba hidráulica o el motor hidráulico estarán sujetos a discreción de Scag Power Equipment.