Summary of Contents for Scag Power Equipment Turf Tiger STT61V-31KB-DF
Page 1
Model: STT61V-31KB-DF STT72V-31KB-DF 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.
Page 2
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: STT61v-31KB-DF with a serial number of K2100001 to K2199999 STT72v-31KB-DF...
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...
Page 4
7.12 COOLING SYSTEM ..........................40 7.13 BODY, DECK, AND UPHOLSTERY ......................41 SECTION 8 - ILLUSTRATED PARTS LIST ................42 8.1 SCAG APPROvED ATTACHMENTS AND ACCESSORIES..............42 61v & 72v CUTTER DECKS ...........................44 CUTTER DECK CONTROLS ...........................46 SHEET METAL COMPONENTS ........................48 STT ROLL-OvER PROTECTION SYSTEM .....................50 STT SUSPENSION SEAT ..........................52...
We encourage you to contact your dealer for repairs. All Scag dealers are informed of the latest methods to open or removed. Under no circumstances should service this equipment and provide prompt and efficient your mower be operated without these devices service in the field or at their service shop.
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...
Scag Service Dealer or by contacting Scag Power Equipment, Service Department at P.O. Box 152, Mayville, WI 53050 or contact us via the Internet at www.scag.com. The manual for this machine can be downloaded by using The signal word “CAUTION” is a reminder of safety practices...
Section 2 DO NOT allow children to ride or play on the Be sure the interlock switches are functioning machine, it is not a toy. correctly. Clear the area to be mowed of objects that could be Fuel is flammable; handle it with care. Fill the fuel picked up and thrown by the cutter blades.
Page 9
Section 2 Reduce speed and exercise extreme caution on Take all possible precautions when leaving the slopes and in sharp turns to prevent tipping or loss machine unattended, such as disengaging the of control. Be especially cautious when changing mower, lowering the attachments, setting the parking directions on slopes.
Section 2 Use care when approaching blind corners, shrubs, Lower the roll bar only when absolutely necessary. trees, or other objects that may obscure vision. To lower the roll bar, remove the hairpin cotter pins NEVER leave the machine running unattended. and remove the two (2) lock pins.
Page 11
Section 2 WARNING Failure to properly inspect and maintain the seat belt can cause serious injury or loss of life. Check the full length of the seat belt webbing for cuts, wear, fraying, dirt and stiffness. See Figure 2-3. Figure 2-4. Slope Angle Graph Check the seat belt webbing in areas exposed to ultra violet rays from the sun or extreme dust or...
Check blade If you need service on your hydraulic system, mounting bolts frequently to be sure they are tight. please see your authorized Scag dealer. Do not change the engine governor settings or overspeed the engine. See the engine operator's Let the engine cool before storing.
Section 2 SAFETY AND INSTRUCTIONAL DECALS WARNING INSTALL BELT COvER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 483402 483407 483402 483407 FORWARD REvERSE 481568 WARNING 483406 Operation of this equipment may create sparks that can start res around dry vegetation. A spark arrestor may be required.
Section 3 SPECIFICATIONS ENGINE General Type ....................Heavy Duty Industrial/Commercial Gas/LP Brand ........................Kubota Dual Fuel [Spec. #DF972-E2] Model ................................Kubota DF972 Horsepower ..................LP = 29 HP at 3600 RPM, Gas = 31 HP at 3600 RPM Type ................. 4 Cycle Dual Fuel, 3 Cylinder, Horizontal Shaft, Water Cooled Displacement .............................
Acres Per Day ........................23.7 ........28 The preceding chart will aid you in determining how many acres your Scag mower will cut per day. The chart is an estimate based on 8 hours per day cutting time at 6 MPH with an allowance for overlap and turns.
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 hours the engine has been operated. It operates set the cutter deck at the desired cutting height. whenever the key is on. Has preset maintenance Deck Release Lever (Figure 4-1).
Section 4 INITIAL RUN-IN PROCEDURES Turn the ignition key to the START position and release the key as soon as the engine starts. Do not hold the key in the START position for more FIRST DAY OF USE OR APPROxIMATELY 20 HOURS than 15 seconds at a time.
Section 4 To steer the mower right while traveling forward, pull the To steer left while traveling in reverse, allow the left right steering control lever back. The further the lever is steering control lever to move forward. The further the pulled back, the quicker the mower will turn right.
Section 4 Always operate the engine at full throttle to properly Slow the engine to idle speed. maintain cutting speed. If the engine starts to lug Engage the parking brake. down, reduce the forward speed and allow the engine to operate at maximum RPM. Turn the ignition key to the OFF position and remove the key.
Section 4 If the discharge chute becomes clogged, shut off The discharge chute must not be removed and the engine and remove the ignition key. Using a stick must be kept in the lowest position to deflect grass or similar item, dislodge the clogged material. Then clippings and thrown objects downward.
Section 4 If adjustment of the steering levers is needed, use LANYARD the following instructions to adjust. A. Loosen the tension knob on the lever assembly. B. Rotate the steering lever forward or backward to achieve the optimum operating position. C.
Section 4 4.15 ADJUSTING THE HEIGHT ADJUST PEDAL Position the seat to the desired location. While in the operator's position with out the engine running, push down on the height adjust pedal to check for full function control. The height adjust pedal can be located in three (3) different positions for operator comfort and control.
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...
Page 25
Deck plugged, grass accumulation Clean underside of deck Too much blade angle (deck pitch) Adjust pitch and level Deck mounted improperly See your authorized SCAG dealer Bent spindle area See your authorized SCAG dealer Width of Deck Dull blade Sharpen blade...
Page 26
Blades not mounted evenly Adjust pitch and level OF CUTTING PATH Bent blade Replace blade Internal spindle failure See your authorized SCAG dealer Mounting of spindle incorrect See your authorized SCAG dealer Width of Deck SGB024 SLOPE CUT - SLOPING RIDGES...
“ENGAGE” position and the parking brake will allow the mower to move. If the following procedures do not allow you to engage the parking brake properly, contact your Scag dealer for further brake adjustments. 390S0152-1 Position a floor jack under the rear of the machine.
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. (Neutral Adjustment, See Below). B. The steering control levers are in the full forward position and the mower pulls to one side or the other when traveling in a forward direction.
The engine and drive unit can get hot during operation causing burn injuries. Allow engine These adjustments must be performed by your Scag dealer and drive components to cool before making any to ensure proper and efficient running of the engine. Should adjustments.
400 hours / 2 years, whichever occurs first. LOOSEN HERE BELT ALIGNMENT Belt alignment is important for proper performance of your Scag mower. If you experience frequent belt wear or breakage, see your authorized Scag service center for Figure 6-5. Cutter Deck Level Adjustment belt adjustment.
Page 31
Section 6 JAM NUT LANYARD LOOSEN HERE ADJUST HERE 390S0174-1 390S014A-2 Figure 6-6. Cutter Deck Level Adjustment HEIGHT ADJUSTMENT PEDAL Using a wrench on the jam nut (See Figure 6.6) turn Figure 6-7. Cutter Deck Height Adjustment the adjusting rods until the proper pitch is obtained on both the RH and the LH side of the cutter deck.
Page 32
Section 6 CUSTOM-CUT BAFFLE ADJUSTMENT To adjust the Custom-Cut Baffle height: Place the cutter deck in the transport position. The Custom-Cut Baffle is designed to deliver optimum airflow and superior cutting performance in any type of Remove the hardware securing the Custom-Cut grass.
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 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.
Page 39
Always place after 1000 hours of operation or annually, whichever containers on the ground away from your vehicle occurs first. Contact your authorized Scag service center before filling. for details and maintenance. See Engine Owner's manual...
Section 7 ENGINE AIR CLEANER WARNING A. CLEANING AND/OR REPLACING AIR CLEANER ELEMENT DO NOT overfill. Follow approved procedures for filling. For any air cleaner, the operating environment dictates the air cleaner service periods. Inspect and clean the air This cylinder is designed to contain LP Gas; a cleaner element after every 100 hours of operation or flammable liquid and gas under pressure.
If you experience frequent belt wear or breakage, see your authorized Scag service center for belt DO NOT charge a frozen battery. It may explode and adjustment.
Page 42
The cutter blades should be balanced to 1-1/2 oz-in. Do not attempt to straighten a bent blade, and See your authorized Scag dealer for blade balancing never weld a broken or cracked blade. Always or special tools, if you choose to balance your own replace it with a new blade to assure safety.
Section 7 7.10 TIRES CAUTION Check the tire pressures after every 8 hours of operation or daily. Inspect the cutter blade spacer(s) and washer for wear and/or cupping. Replace the worn parts. Caster Wheels Flat Free Worn spacer(s) and/or washer will not allow Drive Wheels 12 PSI proper tightening of the cutter blade and can lead...
The cooling system should be flushed and the coolant replaced every 500 hours of operation or WARNING annually. See your Scag dealer for proper coolant replacement. To avoid burns, always allow the engine to cool B. CLEANING THE RADIATOR DEBRIS SCREEN before removing the radiator cap.
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...
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-3B (p/n 900S) - Requires a 900X (61 STT/SCZ Install Kit) •...
Section 8 REPLACEMENT DECALS AND INFORMATION PLATES __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________ Avoid injury from burns - Shut o engine - Allow to cool several minutes - Remove cap slowly - Do not over ll 484281 Hea vy- Duty...
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 components for evaluation.
Need help?
Do you have a question about the Turf Tiger STT61V-31KB-DF and is the answer not in the manual?
Questions and answers