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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).
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 ....................29 6.8 ELECTRIC CLUTCH ADJUSTMENT ......................30 SECTION 7 -...
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Table of Contents BDP-16A HYDRAULIC PUMP ASSEMBLY WITH COOLING FAN (26DFI & 35BvAC) .........70 ELECTRICAL SYSTEM - 25KA - KAWASAKI ....................72 ELECTRICAL SYSTEM - 26CH-EFI - KOHLER ....................74 ELECTRICAL SYSTEM - 26DFI - KAWASAKI ....................76 ELECTRICAL SYSTEM - 35BvAC - BRIGGS & STRATTON .................78 REPLACEMENT DECALS AND INFORMATION PLATES ................80 STT ELECTRICAL SCHEMATIC (25KA - KAWASAKI) ..................82 STT ELECTRICAL SCHEMATIC (26CH-EFI - KOHLER) ................83...
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 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.
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Section 2 Reduce speed and exercise extreme caution on NEVER raise the deck with the blades engaged. slopes and in sharp turns to prevent tipping or loss Take all possible precautions when leaving the of control. Be especially cautious when changing machine unattended, such as disengaging the 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.
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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 and can engine running unless specifically instructed to do penetrate skin causing injury. If hydraulic fluid so. If the engine is running, keep hands, feet, and is injected into the skin, it must be surgically clothing away from moving parts.
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 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 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 voltmeter (Figure 4-1). Deck Lift Foot Lever (Figure 4-1). Indicates the condition of Used to raise and lower the cutter deck. Push full forward to lock in the charging system. When the engine is running, in normal operating conditions, the needle should be in the transport position.
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 WARNING If the pump drive belt fails, steering control will be lost which could result in serious injury or death. ADJUST HERE Replace the pump drive belt as needed or every 400 hours / 2 years, whichever occurs first. LOOSEN HERE BELT ALIGNMENT...
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Section 6 LANYARD JAM NUT LOOSEN HERE ADJUST HERE 390S0174-1 390S014A-2 HEIGHT ADJUSTMENT PEDAL Figure 6-6. Cutter Deck Level Adjustment Using a wrench on the jam nut turn the adjusting Figure 6-7. Cutter Deck Height Adjustment rods until the proper pitch is obtained on both the RH and the LH side of the cutter deck.
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 the fuel cap until it FILLER NECK ratchets. INSERT B. REPLACING IN-LINE FUEL FILTER ELEMENTS The engine fuel filter should be replaced after every 500 FUEL LEVEL hours of operation or annually, whichever occurs first. See Figure 7-7.
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. Charge the battery in a well ventilated space so BLADE INSPECTION gases produced while charging can dissipate. Remove the ignition key before servicing the blades. Raise the mower deck to the highest position. Place Charging rates between 3 and 50 amperes are satisfactory the lanyard pin in the highest cutting height position if excessive gassing or spewing of electrolyte does not...
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Section 7 - NOTe - - NOTe - DO NOT sharpen the blades beyond 1/3 of the The front of the machine will have to be raised width of the blade. See Figure 7-8. slightly to remove the blade bolt from the cutter spindle.
Section 7 Install the spacer onto the blade bolt and insert the Visually check that the lubricant level is up to the bolt into the cutter spindle shaft. bottom edge of the check plug hole. If lubricant is low, add SAE 80W90 lubricant through the check Install the hex nut to the blade bolt at the top of the plug hole in the gearbox until it is level with the cutter spindle.
Section 7 - NOTe - Fill to Bottom of Filler Neck Check the radiator for excessive debris and clean with compressed air. Never spray a hot engine with water, use only compressed air to remove debris. Re-install the debris screen to the radiator. C.
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 900J, 900K) - Requires a 900W (52 STT Install Kit) or 900X (61 STT/SCZ Install Kit) •...
Section 8 REPLACEMENT DECALS AND INFORMATION PLATES 48404 Hea vy- Duty FORWARD Comm e rcial REvERSE 481568 481971 WARNING INSTALL BELT COvER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL MOWER DECK PULL OUT TO ENGAGE PUSH IN TO DISENGAGE START MOWER DECK PULL OUT TO ENGAGE 482508 PUSH IN TO DISENGAGE...
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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 484293...
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.