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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: STT61v-31EFI with a serial number of G5200001 to G5299999 STT-31EFI-SS...
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 6 - ADJUSTMENTS ....................23 6.1 PARkING BRAkE ADJUSTMENT ......................23 6.2 TRAvEL ADJUSTMENTS ..........................23 6.3 THROTTLE CONTROL AND CHOkE ADJUSTMENTS ................25 6.4 BELT ADJUSTMENT ..........................25 6.5 BELT ALIGNMENT .............................25 6.6 CUTTER DECk ADJUSTMENTS ......................26 6.7 CUSTOM-CUT BAFFLE ADJUSTMENT ....................28 6.8 ELECTRIC CLUTCH ADJUSTMENT ......................29 SECTION 7 - MAINTENANCE...
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 The signal word “DANGER” denotes that an extremely or death. Hazard control and accident prevention are hazardous situation exists on or near the machine that dependent upon the awareness, concern, prudence, and could result in high probability of death or irreparable injury...
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 Stay two cut widths away from slopes, drop offs, Disengage power to the attachments when ditches and retaining walls. transporting or when not in use. 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.
Section 2 ROLL-OvER PROTECTION SYSTEM Lower the roll bar only when absolutely necessary. To lower the roll bar, remove the hairpin cotter pins and remove the two (2) lock pins. See Figure 2-2. WARNING Lower the roll bar to the down position. To raise the roll bar, lift the bar to the upright keep the roll bar in the raised and locked position position.
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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...
Section 2 MAINTENANCE CONSIDERATIONS & WARNING STORAGE Never make adjustments to the machine with the Hydraulic fluid is under high pressure. keep engine running unless specifically instructed to do body and hands away from pinholes or nozzles so. If the engine is running, keep hands, feet, and that eject hydraulic fluid under high pressure.
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 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 Throttle 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 only operates set the cutter deck at the desired cutting height. when the engine is running. Has preset maintenance Deck Release Lever (Figure 4-1).
Section 4 INITIAL RUN-IN PROCEDURES GROUND TRAvEL AND STEERING FIRST DAY OF USE OR APPROxIMATELY 20 HOURS - IMPORTANT - If you are not familiar with the operation of a Check all belts for proper alignment and wear at 2, 4 machine with lever steering and/or hydrostatic and 8 hours.
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 B. The steering control levers are in the full forward Tighten the jam nuts and repeat for the LH wheel. position and the mower pulls to one side or the (See Figure 6-4). other when traveling in a forward direction. (Tracking Adjustment, See Page 25).
Section 6 TRACkING ADJUSTMENT A. Stop the machine and place the steering control levers in the neutral position. Loosen the lock nuts securing the ball joints at each end of the RH steering control rod. Rotate the control rod to lengthen the rod CAUTION and tighten the lock nuts.
Section 6 CUTTER DECk ADJUSTMENTS CUTTER DECk PITCH The pitch of the cutter deck should be equal between Cutter deck level, pitch and height are set at the factory. the front and rear of the cutter deck for proper cutting However, if these adjustments should ever need to be performance.
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Section 6 CUTTER DECk HEIGHT Check the cutter deck cutting height by placing the lanyard pin in the 3" position on the cutting height index. Release the deck from the transport position The cutter deck height adjustment is made to insure that the and allow the deck to move to the 3"...
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 Check coolant level...
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 Replace gas cap and tighten securely. For Low FILLER NECK Emission (LE) and EPA Phase 3 (produced after INSERT 1/1/2011) models, tighten the fuel cap until it ratchets. B. REPLACING IN-LINE FUEL FILTER ELEMENTS FUEL LEVEL The engine fuel filter should be replaced after every 500 hours of operation or annually, whichever occurs first.
Section 7 - NOTe - WARNING In extremely dusty conditions it may be necessary to check the element once or twice daily to prevent engine damage. Electric storage battery fluid contains sulfuric acid which is POISON and can cause SEvERE Unhook the clamps securing the air cleaner cover to CHEMICAL BURNS.
Section 7 CUTTER BLADES WARNING A. BLADE INSPECTION BATTERIES PRODUCE ExPLOSIvE GASES. Remove the ignition key before servicing the blades. Charge the battery in a well ventilated space so gases produced while charging can dissipate. Raise the mower deck to the highest position. Place the lanyard pin in the highest cutting height position to prevent the cutter deck from falling.
Section 7 Angle Blade Back HEX NUT-TORQUE TO 75 LB-FT Do Not Cut In X Must NOT Exceed SPINDLE 1/3 Blade Width SHAFT CUTTER SGB033 DECK Figure 7-8. Blade Sharpening Check the balance of the blade. If the blades are out of balance, vibration and premature wear can occur.
Section 7 7.11 CUTTER DECk GEARBOx Remove the drain plug, drain the lubricant into the container and properly discard it. Re-install the drain plug and add SAE 80W90 A. CHECkING LUBRICANT LEvEL lubricant through the check plug hole in the gearbox until it is level with the bottom of the check plug hole.
Section 7 7.13 BODY, DECk, AND UPHOLSTERY Replace the radiator cap. Push down on the cap and turn clockwise until it stops. - NOTe - CAUTION The cooling system should be flushed and the coolant replaced every 500 hours of operation or annually.
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/SCZ-61V (p/n 9091) - Requires p/n 9096 •...
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.