Scag Power Equipment STTII-52V-26CH-EFI Operator'S Manual Download Page 1

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PART NO. 03407

PRINTED 1/2016

PRINTED IN USA

Scag Power Equipment

Division of Metalcraft of Mayville, Inc.

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. Before operating your machine,

please read all the information enclosed.

OPERATOR’S

MANUAL

Models: STTII-52V-26CH-EFI

STTII-61V-25KA

STTII-61V-26CH-EFI

STTII-61V-26DFI

STTII-61V-31DFI

STTII-61V-35BV

STTII-72V-26CH-EFI

STTII-72V-26DFI

STTII-72V-31DFI

STTII-72V-35BV

Summary of Contents for STTII-52V-26CH-EFI

Page 1: ...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 Be...

Page 2: ...wer driven parts Keep others off the mower only one person at a time REMEMBER YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR HAZARD CONTROL AND ACCIDENT PREVENTION ARE DEPENDENT UPON THE AWARENESS CONCERN...

Page 3: ...ECTRICAL 10 3 3 POWER HEAD 11 3 4 CUTTER DECK 11 3 5 HYDRAULIC SYSTEM 12 3 6 WEIGHTS AND DIMENSIONS 12 3 7 PRODUCTIVITY 12 SECTION 4 OPERATING INSTRUCTIONS 13 4 1 TIGER EYE INSTRUMENT IDENTIFICATION 1...

Page 4: ...ART RECOMMENDED SERVICE INTERVALS 32 7 2 LUBRICATION 33 7 3 HYDRAULIC SYSTEM 35 7 4 ENGINE OIL 36 7 5 ENGINE FUEL SYSTEM 36 7 6 ENGINE AIR CLEANER 37 7 7 BATTERY 38 7 8 DRIVE BELTS 39 7 9 CUTTER BLADE...

Page 5: ...FUEL SYSTEM 68 BDP 16A HYDRAULIC PUMP ASSEMBLY WITH COOLING FAN 70 STTII ELECTRICAL SYSTEM 72 REPLACEMENT DECALS AND INFORMATION PLATES 74 ELECTRICAL SCHEMATIC KAWASAKI 25KA 76 ELECTRICAL SCHEMATIC K...

Page 6: ...IV R Table of Contents...

Page 7: ...APPROVED ATTACHMENTS AND ACCESSORIES Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine See Section 8 1 WARNING For pictori...

Page 8: ...ning 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 Element Eng...

Page 9: ...ntains important information about safety To avoid injury and possible death carefully read the message Be sure to fully understand the causes of possible injury or death SIGNAL WORD It is a distincti...

Page 10: ...m disconnected or malfunctioning 10 Be sure the interlock switches are functioning correctly 11 Fuel is flammable handle it with care Fill the fuel tank outdoors Never fill it indoors Use a funnel or...

Page 11: ...machine and mow slowly 11 DO NOT turn sharply Use care when backing up 12 Disengage power to cutter deck before crossing roads walks or gravel drives 13 Mow only in daylight or good artificial light...

Page 12: ...ners shrubs trees or other objects that may obscure vision 24 NEVER leave the machine running unattended 2 5 ROLL OVER PROTECTION SYSTEM WARNING Keep the roll bar in the raised and locked position and...

Page 13: ...ed when turning operating on slopes slick or wet surfaces Allow extra distance to stop Stay off of slopes too steep for safe operation To check a slope attempt to back up it with the cutter deck down...

Page 14: ...when required 12 Carefully release pressure from components with stored energy WARNING Hydraulic fluid is under high pressure and can penetrate skin causing injury If hydraulic fluid is injected into...

Page 15: ...81 483406 483407 483402 484320 483407 483633 483425 483300 WARNING Operation of this equipment may create sparks that can start fires around dry vegetation A spark arrestor may be required The operato...

Page 16: ...00 RPM Briggs Stratton 1750 RPM Carburation Kawasaki FD750D Fixed Jet Downdraft Carburetor Kohler ECH749 Electronic Fuel Injection Kawasaki FD791D Digital Fuel Injection Kawasaki FD851D Digital Fuel I...

Page 17: ...e adjusted depending upon the cutting conditions 3 4 CUTTER DECK Type Floating Adjustable Anti Scalping Hybrid Design Combines Out Front and Belly Mount Designs Construction Tri Plate deck constructio...

Page 18: ...3 62 73 Overall Height w ROPS up 67 5 67 5 67 5 Overall Height w ROPS down 56 5 56 5 56 5 Operating Weight w ROPS approx 1420 1520 1575 Operating Weight w ROPS and 35BV Engine NA 1445 1495 3 7 PRODUCT...

Page 19: ...es engine oil pressure Reference the engine operator s manual for further information OPERATING INSTRUCTIONS 4 Service Engine Indicator Figure 4 1 Indicates the maintenance reminder for the engine oil...

Page 20: ...ed Monitoring System DECK LIFT SUSPENSION SEAT CONTROL KNOB LEFT STEERING CONTROL BRAKE PEDAL PARKING BRAKE LOCK LATCH FUEL GAUGE SEAT HOLD DOWN RELEASE LATCH CUTTING HEIGHT ADJUSTMENT CUTTER DECK REL...

Page 21: ...to lock the parking brake in the engaged position Fully depress the brake pedal and pull the parking brake lock latch back to lock the parking brake in the engaged position See Figure 4 3 Fully depre...

Page 22: ...before operating the mower 13 Deck Release Lever Figure 4 2 Used to lock the cutter deck in the transport position Push the foot pedal forward and pull back on the release lever to release the cutter...

Page 23: ...he quicker the mower will turn right NOTE Smooth operation of the steering levers will produce smooth mower operation While learning the operation of the steering controls keep the travel speed low IM...

Page 24: ...may occur when traveling down hill Weight transfers to the front of the machine and may cause the drive wheels to slip causing loss of braking or steering 6 Keep tires properly inflated 4 9 PARKING T...

Page 25: ...S INTOTHE DISCHARGE CHUTE FOR ANY REASON Shut off the engine and remove the key and only then use a stick or similar object to remove material if clogging has occurred 1 If the discharge chute becomes...

Page 26: ...hort cut off 1 3 or less of existing grass for best appearance Mow frequently 4 Keep mower and discharge chute clean 5 When mowing wet or tall grass mow the grass twice Raise the mower to the highest...

Page 27: ...olts securing the control handle to the control lever Install the handle in the desired position 4 16 ADJUSTING THE HEIGHT ADJUST PEDAL 1 Position the seat to the desired location 2 While in the opera...

Page 28: ...NG STRIPS OF UNCUT GRASS IN CUTTING PATH Width of Deck SGB018 Dull worn blades Sharpen blades Incorrect blade sharpening Sharpen blades Low engine RPM Run engine at full RPM Belt slipping Adjust belt...

Page 29: ...aler Bent spindle area See your authorized SCAG dealer Dull blade Sharpen blade UNEVEN CUT ON UNEVEN GROUND WAVYAPPEARANCE HIGH LOW SCALLOPED CUT OR ROUGH CONTOUR Width of Deck SGB021 Uneven ground Ma...

Page 30: ...t Ground speed too fast Slow speed to adjust for conditions Wet grass Cut grass after it has dried out STEP CUT RIDGE IN CENTER OF CUTTING PATH Width of Deck SGB024 Blades not mounted evenly Adjust pi...

Page 31: ...e the ignition key 2 Engage the parking brake Fully depress the brake pedal and pull the parking brake lock latch back to lock the parking brake See Figure 6 1 3 Loosen the jam nut at the front of the...

Page 32: ...neutral lock position 2 With an operator in the seat start the engine and disengage the parking brake 3 Run the engine at full operating speed and check if the machine creeps forward or backwards 4 Ad...

Page 33: ...ll cause the control rod to stroke the LH pump less slowing down the LH wheel See Figure 6 4 NOTE If after making the adjustment as outlined in step 1A the machine creeps forward or backward perform t...

Page 34: ...ferent the cutter deck level must be adjusted as follows 1 If the cutter deck is lower on one side loosen the elastic stop nuts securing the deck level links on the front and rear of the lower side Se...

Page 35: ...ght adjustment is made to ensure that the cutter deck is cutting at the height indicated on the cutting height index gauge To check for proper deck height be sure that the mower is on a flat level sur...

Page 36: ...e in all types of grass C 4 3 4 or 5 1 4 Position See Figure 6 9 Placing the baffle in either the 4 3 4 or 5 1 4 setting will enhance fall cutting leaf pickup and reduce cutter deck blowout To adjust...

Page 37: ...e 6 10 INSPECTION WINDOW x3 Figure 6 10 Clutch Air Gap Adjustment 1 Locate the inspection windows on the clutch 2 Place a 0 015 feeler gauge in the slot between the rotor and the armature 3 Tighten or...

Page 38: ...tire pressure See paragraph 7 10 X Inspect seat belt for wear or damage See paragraph 2 5 X Check the operator interlock system See paragraph 4 3 X Check coolant level See paragraph 7 11 X Change engi...

Page 39: ...Hours Yearly Chassis Grease 2 2 Caster Wheel Bearings 100 Hours Monthly Chassis Grease 2 3 Cutter Deck Drive Shaft Slip Sleeve 200 Hours Monthly Chassis Grease 1 4 Cutter Deck Bellcranks 100 Hours Bi...

Page 40: ...CATION Lubricant Interval Lithium MP White Grease 2125 40 Hours Weekly Chassis Grease 100 Hours Bi monthly Chassis Grease 200 Hours Monthly Chassis Grease 500 Hours Yearly 1 1 2 7 5 6 4 4 2 5 8 3 8 Fi...

Page 41: ...be changed as outlined in Procedure C Changing Hydraulic Oil Filter Element on page 35 4 Fill the reservoir to 3 1 4 inches from the top of the filler neck with 20W50 motor oil 5 Replace the reservoi...

Page 42: ...aulic oil filter should be changed after every 500 hours of operation or annually whichever occurs first 1 Remove the oil filter element and properly discard it See Figure 7 3 Fill the new filter with...

Page 43: ...th the rim of fuel tank or container opening at all times until fueling is complete Do not use a nozzle lock open device 9 If fuel is spilled on clothing change clothing immediately and wash affected...

Page 44: ...eyes skin or clothing Use proper protective gear when handling batteries DO NOT tip any battery beyond 45 angle in any direction If fluid contact does occur follow first aid suggestions below BATTERY...

Page 45: ...hich could result in serious injury or death Replace the pump drive belt as needed or every 400 hours 2 years whichever occurs first 7 9 CUTTER BLADES A BLADE INSPECTION BLADE INSPECTION 1 Remove the...

Page 46: ...the optional Blade Buddy tool P N 9212 to assist in securing the cutter blades remove the nut from the blade attaching bolt Remove the cutter blade bolt and spacer from the spindle shaft See Figure 7...

Page 47: ...ICANT The lubricant in the cutter deck gearbox should be changed after every 500 hours of operation or yearly whichever occurs first 1 Place a suitable container beneath the cutter deck gearbox and lo...

Page 48: ...ith compressed air Never spray a hot engine with water use only compressed air to remove debris 3 Re install the debris screen to the radiator C CHECKING THE FAN BELT TENSION LIQUID COOLED ENGINES ONL...

Page 49: ...s a 901D 52 STT Install Kit or 900X 61 STT SCZ Install Kit GC CS p n 900T Requires a 901D 52 STT Install Kit or 900X 61 STT SCZ Install Kit Mulch Plate p n 9287 9288 920F Hurricane Mulch p n 9284 9285...

Page 50: ...8 16 11 18 17 19 17 18 21 83 20 32 31 82 16 78 79 17 81 80 33 34 30 29 36 35 37 38 34 33 32 24 25 40 1 45 44 63 62 31 46 47 48 49 50 51 52 53 48 54 56 55 57 84 58 59 60 61 25 23 24 43 11 33 41 39 42...

Page 51: ...te Nut Elastic Stop 5 16 18 Nut Serrated Flange 5 16 18 Shaft Weldment Pusharm Nut Elastic Stop 5 16 18 Grade 8 Bolt Hex Head 3 8 16 x 3 Bolt Hex Head 3 8 16 x 3 3 4 Pad Deck Wear Spindle Assembly 46...

Page 52: ...2 8 11 16 85 18 17 19 17 18 21 84 20 32 83 82 81 80 42 33 34 31 30 29 36 35 37 38 34 33 32 24 25 40 23 24 25 27 22 26 28 44 45 46 47 48 49 50 51 52 53 48 54 55 56 57 58 59 60 61 62 64 63 31 25 23 24 6...

Page 53: ...x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 46 47 48 49 50...

Page 54: ...48 R Section 8 STTII CUTTER DECK CONTROLS 1 2 3 14 24 21 23 22 21 19 20 18 17 16 26 25 27 6 4 5 7 8 11 9 9 10 11 11 9 11 10 9 8 12 11 11 11 13 14 15 5 4 4 STTII CDC 28...

Page 55: ...Deck Latch Spring Torsion Lever Return Nut Elastic Stop 1 2 13 Flatwasher 1 2 562 x 1 375 x 109 Link Deck Lift Pivot Deck Link Bolt Hex Head 1 2 13 x 2 1 4 Bolt Hex Head 3 8 16 x 1 1 2 Chain Nut Serra...

Page 56: ...L COMPONENTS A A B B 1 2 3 4 6 7 8 9 5 10 12 11 13 25 14 15 16 17 19 18 31 21 22 23 24 20 29 26 28 7 27 28 7 24 30 14 29 32 30 33 7 31 7 57 30 7 36 37 39 41 40 42 43 44 45 46 47 48 49 50 45 50 51 52 1...

Page 57: ...Rubber Pad Rubber Insulation Battery Cover Battery Box Bolt Carriage 5 16 18 x 3 4 U Nut 1 4 20 Nut Elastic Stop 5 16 18 Nut Serrated Flange 5 16 18 Bolt Hex Head 1 4 20 x 8 Mounting Bracket Cooler RH...

Page 58: ...52 R Section 8 STTII ROLL OVER PROTECTION SYSTEM 2 3 4 4 2 3 4 3 1 1 1 7 8 12 9 5 7 5 11 10 11 6 10 9 2 5 5 4...

Page 59: ...9 04040 13 484168 04001 90 04021 07 426952 484170 484169 484167 04001 163 STT ROPS Bolt Hex Head 1 2 13 x 4 1 4 Nut Center Lock 1 2 13 Flatwasher 1 2 562 x 1 375 x 109 Pin Assembly ROPS Hinge incl 9 1...

Page 60: ...484709 484717 485652 484710 484712 481638 485594 484714 484708 Seat Assembly Armrest Kit LH Seat Belt Kit Knob Kit Recliner Armrest Kit RH Back Cover Switch N O Track Kit Knob Kit Weight Adjust Cover...

Page 61: ...55 R Section 8 NOTES...

Page 62: ...6 70 18 23 74 18 47 6 72 78 6 16 5 7 2 8 9 10 7 11 12 13 14 15 10 11 32 21 20 8 37 36 35 34 33 29 30 28 27 7 25 23 24 22 26 39 38 40 41 38 42 14 16 16 43 44 48 49 50 61 60 59 53 58 57 51 52 53 54 55 5...

Page 63: ...ockwasher 7 16 Bolt Hex Head 7 16 20 x 2 1 2 Kohler Bolt Hex Head 7 16 20 x 2 1 4 35BV Bolt Hex Head M10 1 5 x 50 Kawasaki Key 1 4 x 1 4 x 3 1 4 Bolt Hex Head 3 8 16 x 2 1 2 Grade 8 Tapered Hub 1 Bore...

Page 64: ...58 R Section 8 STTII ENGINE AND ATTACHING PARTS AIR COOLED A A 1 2 3 4 5 7 6 9 18 8 10 11 13 12 13 16 14 15 21 22 19 29 18 28 21 17 20 23 22 17 27 17 9 26 30 24 25 24...

Page 65: ...x 065 Bolt Hex Head 3 8 16 x 1 3 4 Flatwasher 3 8 391 x 938 x 105 Guard Muffler Bolt Hex Head Serrated Flange 1 4 20 x 3 4 U Nut 1 4 20 Muffler 26EFI Kohler Muffler 35BV Briggs Stratton Disk Anti Fric...

Page 66: ...60 R Section 8 STTII ENGINE ATTACHING PARTS LIQUID COOLED A A 2 3 4 5 6 7 18 9 8 10 11 13 12 14 15 22 21 29 18 28 21 23 20 22 17 27 9 26 19 1 31 30 24 25 24 16 17...

Page 67: ...II FD750 Hood Assy STTII FD791 FD850 Fuel Injected Bolt Shoulder 3 8 x 1 2 Latch Hood Spring Hood Latch Lock Hood Latch Flatwasher 3 8 406 x 812 x 065 Bolt Hex Head 3 8 16 x 1 3 4 Flatwasher 3 8 406 x...

Page 68: ...62 R Section 8 STTII BRAKE COMPONENTS A A 1 2 3 19 3 23 21 27 24 22 25 9 8 26 45 10 11 12 11 29 28 25 22 40 32 33 13 15 16 17 18 14 34 35 36 37 39 38 47 41 42 43 41 5 6 4 7 31 46 22 25 44 STTII BSC...

Page 69: ...e Handle w Grip Grip Spacer Bearing Flatwasher 3 8 391 x 938 x 105 Retaining Ring 625 Ext E Pivot Brake Spring Nut Center Lock 3 8 16 Bolt Hex Head 3 8 16 x 2 Spacer Brake Pivot Spring Brake Return Bo...

Page 70: ...64 R Section 8 STTII STEERING COMPONENTS 1 2 3 3 4 41 5 6 7 37 36 34 35 31 33 32 31 30 38 37 39 40 25 37 39 17 11 8 9 10 13 14 42 12 16 15 18 29 24 21 22 23 16 28 27 26 25...

Page 71: ...1 4 20 Mounting Bracket Spring Return Mounting Weldment LH Control Mounting Weldment RH Control Bolt Carriage 5 16 18 x 3 4 Bolt Carriage 1 4 20 3 4 Nut Serrated Flange 5 16 18 Bolt Carriage 5 16 18...

Page 72: ...J K L 1 2 3 4 16 5 10 11 17 16 11 14 15 17 17 23 23 24 24 6 6 7 7 8 9 10 10 11 11 12 13 14 10 11 16 17 14 15 10 11 19 18 22 20 21 17 17 23 23 24 24 10 11 13 15 12 25 14 10 15 11 28 27 26 17 33 11 10...

Page 73: ...16 O Ring incl 15 O Ring 9 16 18 Thread Elbow 90 Degree 3 4 O Ring incl 17 O Ring 3 4 16 Thread Plate Pump Control Clamp Block RH Pump Control Block LH Pump Control Pin 7 32 x 1 Bolt Hex Head 1 4 20 x...

Page 74: ...Tank Purge To Engine Purge Port To Fuel Pump To Carburetor Kohler EFI Briggs Stratton 35BVAC Kawasaki FD750D 11 10 10 A A B B C C D D A B Available Through Engine Manufacturer Only Briggs Stratton 35B...

Page 75: ...3 16 order by inch Clamp Vapor Recovery Hose 3 16 Clamp Cable 375 Dia Bushing 56 Dia Viton Bolt Hex Head 5 16 18 x 3 4 Clamp Fuel Return Fuel Hose 5 16 I D Non Perm order by inch Bolt Carriage 1 2 20...

Page 76: ...n 8 BDP 16A HYDRAULIC PUMP ASSEMBLY with COOLING FAN OR OR PORT A SIDE PORT B SIDE Overhaul Seal Kit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 17 18 19 20 20 21 21 22 23 24 25 26 27 28 29 30 31 32 33...

Page 77: ...287 HG51348 HG52016 HG52014 HG52256 HG44809 Overhaul Seal Kit Shroud Cylinder Block Kit 16cc Thrust Ball Bearing Assembly Variable Swashplate Slot Guide Trunnion Arm Block Spring Block Thrust Washer S...

Page 78: ...OUND STARTER A B CHOKE if applies THROTTLE S C A G PO WE R EQ UI PM EN T KOHLER EFI BRIGGS STRATTON KAWASAKI FD750 FD791 FD850 1 2 3 4 5 8 9 6 10 7 11 13 12 14 15 16 17 17 20 23 38 22 18 19 22 21 24 2...

Page 79: ...Cable FD750 35BV Control Cable Throttle Control Cable Throttle 35BV Capscrew 1 4 20 x 3 4 Bolt Carriage 1 4 20 x 1 2 Lock Nut 10 24 Cluster Gauge Key Switch Switch PTO Indicator Light Assy EFI DFI Po...

Page 80: ...n 8 REPLACEMENT DECALS AND INFORMATION PLATES 1 2 3 5 8 6 4 9 12 13 7 STT 2013 Decals 1 WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR S MANUAL 481568 FORWARD REVERSE F R 11 10 22 2...

Page 81: ...61 Velocity Plus Decal 72 Advantage Decal 72 Velocity Plus Decal Fuel Tank Decal Start Drive Decal Traction Control Decal Heavy Duty Commercial Decal Metalcraft USA Decal Belt Cover Decal Instrument...

Page 82: ...FILTER INDICATOR optional 20 AMP FUSE FUEL PUMP BATTERY A GROUND GROUND STARTER SOLENOID BRAKE INTERLOCK SWITCH TO ENGINE HARNESS LIGHT BLUE RED GRN W BLK STRIPE WHITE BLUE BLACK RED W YEL STRIPE GRE...

Page 83: ...FUEL PUMP GROUND MOT A STARTER SOLENOID ENGINE ENGINE LIGHT BLUE RED GRN W BLK STRIPE WHITE BLUE BLACK RED W YEL STRIPE GREEN RED BLACK BLACK WHT W BLK STRIPE YELLOW ORANGE PINK BROWN RED RED RED RED...

Page 84: ...R TO ENGINE HARNESS CHECK ENGINE LIGHT OFF G M A RUN B L A START B L S Position Key Switch Legend Position PTO Switch Legend OFF H F C D ON B C G H E A ORANGE LIGHT BLUE BROWN PINK RED W BLACK STRIPE...

Page 85: ...5 AMP FUSE 20 AMP FUSE 20 AMP FUSE AIR FILTER INDICATOR optional FUEL PUMP ENGINE WATER TEMP SENSOR BRAKE INTERLOCK SWITCH CHECK ENGINE LIGHT LIGHT BLUE GRN W BLK STRIPE BLUE RED W YEL STRIPE GREEN R...

Page 86: ...LTER INDICATOR optional SEAT SWITCH BRAKE INTERLOCK SWITCH RH NEUTRAL SWITCH GROUND BATTERY MOT A A GROUND STARTER TO ENGINE HARNESS ORANGE BROWN PINK RED W BLACK STRIPE BLACK GRN W BLK STRIPE WHITE B...

Page 87: ...81 R Section 8 NOTES...

Page 88: ...e of returning it to the owner after repair will be paid for by the owner Scag s responsibility is limited to making the required repairs and no claim of breach of warranty shall be cause for cancella...

Page 89: ...2016 Scag Power Equipment Division of Metalcraft of Mayville Inc...

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