Instruction/ maintenance manual of the product STT-31BSG Scag Power Equipment
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MODEL STT-31BSG OPERATOR’S MANUAL THIS MANUAL CONT AINS THE OPERA TING INSTRUCTIONS AND SAFETY INFORMA- TION FOR YOUR SCAG MOWER. READING THIS MANUAL CAN PROVIDE YOU WITH ASSIST ANCE IN MAINTENANCE AND AD- JUSTMENT PROCEDURES TO KEEP YOUR MOWER PERFORMING T O MAXIMUM EFFI- CIENCY .
F AILURE TO FOLLOW SAFE OPERA TING PRACTICES MA Y RESUL T IN SERIOUS INJUR Y . * Keep all shields in place, especially the grass discharge chute. * Before performing any maintenance or service, stop the machine and remove the spark plug wires and ignition key .
I T ABLE OF CONTENTS SUBJECT PA G E Section 1 - General Information 1.1 Introduction ............................................................................................................................. 1 1. 2 Directional Reference ...........
II T ABLE OF CONTENTS (CONT'D) SUBJECT PA G E Section 6 - Adjustments 6. 1 Parking Brake Adjustment .................................................................................................... 20 6. 2 T ravel Adjustments .................
1 GENERAL INFORMA TION 1.1 INTRODUCTION Y our mower was built to the highest standards in the industry . However , the prolonged life and maximum efficiency of your mower depends on you following the operating, maintenance and adjustment instructions in this manual.
2 CE Mark T ransmission Choke On/Start Spring T ension on Idler Oil Off/Stop SYMBOL DESCRIPTION SYMBOL DESCRIPTION ISO Symbols Spinning Blade 48071S Parking Brake WARNING FALLING HAZARD USE ONLY SCAG .
3 Slow Fast Cutting Element - Engage Cutting Element - Basic symbol Cutting Element - Disengage Continuously V ariable - Linear Read Operator's Manual Keep Bystanders A way Pinch Point 481039S SY.
4 SAFETY INFORMA TION This symbol means “Attention! Become Alert! Y our Safety is Involved!" The symbol is used with the following signal words to attract your attention to safety messages found on the decals on the machine and throughout this manual.
5 10. DO NOT add fuel to a running or hot engine. Allow the engine to cool for several minutes before adding fuel. 1 1 . Keep flammable objects (cigarettes, matches, etc.
6 Section 2 2.4 OPERA TION CONSIDERA TIONS (CONT'D) 3. T o prevent tipping or loss of control, start and stop smoothly , avoid unnecessary turns and travel at reduced speed. 4. When using any attachment, never direct the discharge of material toward bystanders or allow anyone near the machine while in operation.
7 Section 2 2.6 SAFETY AND INSTRUCTIONAL DECALS WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 481039 390S0150C 481568 FORWARD REVERSE F R 482580 482710 482290 482286 .
8 SPECIFICA TIONS Section 3 SCA G “SABRE T OO TH TIGER” ZER O-TURN RIDER MODEL: STT– 31BSG ENGINE General Type: Heavy duty industrial/commercial Brand: Briggs Daihatsu Vanguard Liquid Cooled 31 .
9 Section 3 SPECIFICA TIONS (CON'T) SCA G “SABRE T OO TH TIGER” ZER O-TURN RIDER MODEL: STT– 31BSG CUTTER DECK Type: SMST-72A ("Advantage") & SMST-61A ("Advantage") - Floating, adjustable anti- scalping, hybrid design combines out-front and belly-mount designs.
10 Section 4 OPERA TING INSTRUCTIONS Do not attempt to operate this mower unless you have read this man ual. Learn the location and purpose of all controls and instruments bef ore you operate this mower . 4.1 CONTROLS AND INSTR UMENT IDENTIFICA TION Before operating the mower , familiarize yourself with all mower and engine controls.
11 Section 4 5 . V oltmeter (Figur e 4-1). Indicates the condition of the charging system. When the engine is running, in normal operating conditions, the needle should be in the 12 to 14 volt range. 6 . Oil Pressure (Figure 4-1). Indicates engine oil pressure.
12 Section 4 4.3 INITIAL RUN-IN PROCEDURES (First Day of Use or Approximately 10 Hours) 1. Check all belts for proper alignment and wear at 2, 4 and 8 hours. 2. Change the engine oil and oil filter after the first 5 hours of operation. (See Section 7.
13 Section 4 T o steer the mower left while traveling forward, pull the left steering lever back. The further the lever is pulled back, the quicker the mower will turn left. T o steer the mower right while traveling forward, pull the right steering control lever back.
14 Section 4 4. Always operate the engine at full throttle to properly maintain cutting speed. If the engine starts to lug down, reduce the forward speed and allow the engine to operate at maximum RPM. 4.7 HILLSIDE OPERA TION DO NO T operate on steep slopes.
15 Section 4 4.10 REMO VING CLOGGED MA TERIAL 1. If the discharge chute becomes clogged, shut off the engine and remove the ignition key . Using a stick or similar item, dislodge the clogged material.
16 Section 4 4.13 ADJUSTING CUTTING HEIGHT The mower deck can be adjusted from a height of 1-inch to 6 inches at 1/4-inch intervals. T o adjust the cutting height: 1. Disengage the power to the cutter blades. 2. Push the cutting height adjustment foot pedal all the way forward using your right foot until it locks in place.
Section 5 17 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 Dul.
Section 5 18 Uneven Cut on Flat Lift worn from blade Replace blade Ground - Wavy High-Low Blade upside down Mount with cutting edge toward Appearance, ground Scalloped Cut, or Rough Contour Deck plugg.
Section 5 19 Scalping - Blades Low tire pressures Check and adjust pressures Hitting Dirt or Cutting Very Close to Ground speed too fast Slow speed to adjust for conditions the Ground Cutting too low .
Section 6 20 ADJUSTMENTS 6.1 P ARKING BRAKE ADJUSTMENT WARNING: Do not operate the mower if the parking brake is not operable. Possible se vere injury could result. The parking brake linkage should be adjusted whenever the parking brake lever is placed in the “ENGAGE” position and the parking brake will not prevent the mower from moving.
Section 6 21 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. (T racking Adjustment, See Page 22). Neutral Adjustment 1. Be sure the dump valve levers are in the run position and the steering control levers are in the neutral lock position.
Section 6 22 T racking Adjustment Stop the engine and remove the key from the ignition before making an y adjustments. W ait for all moving parts to come to a complete stop before beginning work. The engine and drive unit can get hot during operation causing burn injuries.
Section 6 23 6.6 CUTTER DECK ADJUSTMENTS Cutter deck level, pitch and height are set at the factory . However , if these adjustments should ever need to be made, the following procedures will aid in obtaining the proper cutter deck adjustment.
Section 6 24 Cutter Deck Height The cutter deck height adjustment is made to ensure that the cutter deck is cutting at the height indicated on the cutting height index gauge. T o check for proper deck height, be sure that the mower is on a flat, level surface and the tires are properly inflated.
Section 6 25 2002 CCB MOUNTING HARD W ARE MOUNTING HARD W ARE Figure 6-8. Custom Cut Baffle 3. Move the Custom-Cut Baffle to desired position. (See Figures 6.9 through 6.1 1 for position). 4. Reinstall the mounting hardware as shown. (See Figures 6.10 though 6.
26 Section 7 MAINTENANCE 7.1 MAINTENANCE CHART - RECOMMENDED SER VICE INTER V ALS * Perform these maintenance procedures more frequently under extreme dusty or dirty conditions HOURS Break-In 8 40 10 0 200 500 Procedure Comments (First 10) X Check all hardware for tightness X Check hydraulic oil level See paragraph 7.
Section 7 27 + Compatible Greases: Mobilix #2 found at Mobil Service Stations Ronex MP found at Exxon Service Stations Super Lube MEP #2 & Super Stay-M #2 found at Conoco Stations Shell Alvania #2.
28 Section 7 Figure 7.1 Lubrication Fitting P oints GREASE FITTING LUBRICATION LUBRICANT / INTERVAL LITHIUM MP WHITE GREASE 2125 ( 40 HOURS / WEEKLY ) CHASSIS GREASE ( 100 HOURS / BI-MONTHLY ) CHASSIS.
Section 7 29 7.3 HYDRA ULIC SYSTEM A. Checking Hydraulic Oil Level The hydraulic oil level should be checked after the first 10 hours of operation. Thereafter , check the oil after every 200 hours of machine operation or monthly , whichever occurs first.
30 Section 7 A. Checking Engine Crankcase Oil Level The engine oil level should be checked after every 8 hours of operation or daily as instructed in the Engine Operator ’ s Manual furnished with this mower (See Figure 7-4).
Section 7 31 7.5 ENGINE FUEL SYSTEM A. Filling the Fuel T ank Fill the fuel tank at the beginning of each operating day to within 1 inch below the filler neck. Do not overfill. Use clean, fresh unleaded gasoline with a minimum octane rating of 87. B. Replacing In-Line Fuel Filter Element -NOTE- The fuel filter is located below the hydraulic tank.
32 Section 7 Electric storage battery fluid contains sulfuric acid which is POISON and can cause SEVERE CHEMICAL BURNS. A v oid contact of fluid with eyes, skin, or clothing. Use proper protective gear when handling batteries. DO NO T tip any battery bey ond 45° angle in any direction.
Section 7 33 WARNING: B A TTERIES PRODUCE EXPLOSIVE GASES. Charge the battery in a well ventilated space so gases produced while charging can dissipate. Charging rates between 3 and 50 amperes are satisfactory if excessive gassing or spewing of electrolyte does not occur or the battery does not feel excessively hot (over 125°F).
34 Section 7 Figure 7-9 Blade Sharpening 2. Check the balance of the blade. If the blades are out of balance, vibration and premature wear can occur . See your authorized Scag dealer for blade balancing or special tools, if you choose to balance your own blades.
Section 7 35 The cutter deck gearbox can reach high operating temperatures. Allow the cutter deck gearbox to cool before servicing. CAUTION: 7.11 CUTTER DECK GEARBO X A. Checking Lubricant Level The fluid level in the cutter deck gearbox (Figure 7-12) should be checked after every 100 hours of operation or bi-weekly , whichever occurs first.
36 Section 7 3. Replace the radiator cap. Push down on the cap and turn clockwise until it stops. -NOTE- The cooling system should be flushed and the coolant r eplaced every 500 hours of op- eration or annually. See your Scag dealer for proper coolant replacement.
37 NOTES.
38 61A, 72A CUTTER DECKS 44 61 63 69 62 12 65 64 52 58 54 17 59 24 14 56 28 56 33 3 A A B B 4 14 29 20 53 28 52 24 58 24 52 66 32 13 68 55 55 29 58 2 3 13 23 57 3 11 50 13 46 60 49 67 24 35 48 9 16 19.
39 Ref. Part No. No. Description Ref. Part No. No. Description 42 43297 Spindle Bushing, Bottom 43 481035 Nut, Special 1 - 1/16-18 44 48114-04 Grease Fitting 45 48677 Relief Fitting, Tapered Spindle 46 482245 Spring, Discharge Chute 47 48038 Guide, Roller 48 482001 Cutter Blade, 21.
40 CUTTER DECK CONTROLS STT2002CDC 21 19 37 42 4 6 14 10 42 5 2 3 35 23 41 38 32 34 30 7 27 33 40 41 28 28 24 26 41 40 CUTTER DECK 13 40 39 31 41 40 39 43 9 8 45 20 18 36 16 44 17 41 40 26 11 29 22 40.
41 CUTTER DECK CONTROLS Ref. Part No. No. Description 1 04041-07 Flatwasher, 3/8” 2 481764 Link, Deck Lift 3 481765 Rod End, Female - 1/2-20 RH 4 481766 Rod End, Female - 1/2-20 LH 5 04020-27 Nut, J.
42 SHEET MET AL COMPONENTS STT-BSG 2002 SMC 46 48 47 48 15 50 26 30 25 12 15 19 9 1 23 24 A 31 32 33 34 29 33 36 37 40 39 38 41 42 43 55 35 44 15 27 22 54 20 28 15 14 13 12 11 10 16 17 A 20 5 3 4 8 7 .
43 SHEET MET AL COMPONENTS Ref. Part No. No. Description 1 451481 Fender Weldment, RH 2 04001-09 Bolt, Hex Head, 5/16-18 x 1, Zinc 3 43 606 Spacer 4 04041-07 Flatwasher, 3/8-.391 x .938 x .105 5 451448 Seat Plate Weldment 6 482597 Seat Assembly w/armrest 7 04001-45 Bolt, Hex Head 3/8-16 x 2.
44 DECK DRIVE COMPONENTS A To A B To B TO REAR OF ENGINE TO ENGINE FL YWHEEL 1 2 3 4 5 6 7 8 9 4 10 11 12 13 14 15 16 17 18 19 20 21 22 22 23 24 24 25 25 26 27 27 28 29 30 31 32 33 34 35 36 37 38 42 4.
45 1 422845 Belt Guard, Rear 2 481531 Hinge, Rear Belt Guard 3 481309 Latch, Hood 4 04003-07 Carr. Bolt 1/4-20 x .5” 5 04019-02 Nut, Serr. Flg. 1/4-20 6 04010-01 Screw, #10-32 x .
46 RADIA T OR, COOLERS & ENGINE BRA CKETS T O "A" A A TT ACHES TO FRAME 17 22 21 12 13 15 2 9 1 5 11 10 10 6 7 20 19 14 14 3 18 16 16 8 23 24 25 26 27 28 29 30 31 32 34 35 26 26 36 37 26.
47 1 481810 Radiator 2 481742 Hose, Upper Radiator 3 481743 Hose, Lower Radiator 4 04030-03 Lockwasher, 5/16 (.317 x .586 x .078) Helical Spring 5 423628 Bracket, Air Cleaner 6 423539 Bracket, Engine .
48 BRAKE AND STEERING COMPONENTS STT2002B&SC A 1 2 10 11 33 17 9 19 23 41 11 21 34 36 57 73 48 47 46 5 23 53 42 43 44 45 15 56 70 69 71 62 15 65 60 64 67 60 52 41 34 23 51 50 34 35 TO RH PUMP TO L.
49 1 482340 Grip, Handle Bar 2 461386 Handle Bar (Includes item 1) 3 04001-32 Bolt, Hex Head 3/8-16 x 1-1/4" 4 04030-04 Lockwasher, 3/8" 5 04041-07 Flatwasher.
50 FUEL AND HYDRA ULIC SYSTEM D D D E F C I H G G F E A A B C DUMP VALVE B 2002 STT -BSG F&HS.eps I H T o Carburetor 39 13 14 15 23 24 26 40 16 17 32 36 37 Z 34 25 35 21 31 33 9 30 30 57 56 54 7 4.
51 FUEL AND HYDRA ULIC SYSTEM 1 04110-01 U-Nut 1/4-20 2 48136-13 Hose Clamp, 0.69 dia. 3 04001-03 Bolt, Hex Head 1/4-20 x 2.0” 4 48811 Hose, 3/8” ID Pushlock - (order by inch) 5 482505 Cooler, Oil.
52 ELECTRICAL SYSTEM B A C C B A 1 2 3 4 5 6 7 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 22 21 20 20 20 24 25 24 25 24 25 26 22 21 22 21 27 27 1 2 19 28 29 30 31 32 33 34 35 36 36 37 D D 19 38 E.
53 1 4811 76- 08 Cable, Positive Battery 2 4811 76- 07 Cable, Negative Battery 3 461467 Clutch, Electric PTO 4 481808 Module, Interlock 5 482283 Battery (Not Avail.
54 HYDRAULIC PUMP ASSEMBLY STT 2K BDP-21 11 4 9 11 2 12 10 6 8 7 18 5 14 17 19 20 22 21 23 24 16 25 26 28 27 3 Overhaul Seal Kit 1 3 25 13 15 HYDRA ULIC PUMP ASSEMBL Y - BDP-21L.
55 1 HG 2510065 Housing Kit (Includes Housing, Journal Bearing) 2 HG 2510066 End Cap 3 HG 50641 Straight Headless Pin 4 HG 50633 Socket Head Screw 5 HG 50381 End Cap Gasket 6 HG 2510071 Charge Pump Kit (Includes Charge Cover, Gerotor Assy.
56 RED RED BLUE BLK RED RED PINK ORG BRN PINK RED RED BLUE BLK RED RED RED ORG L T BLUE BRN L T BLUE WHITE W/RED GRN W/BLK GRN W/WHITE GRN RED RED BLK BLK RED RED RED RED RED RED ORG BRN BLK BLK BLK G.
57 REPLA CEMENT DECALS AND INFORMA TION PLA TES 482285 482286 481955 - 61A 481956 - 71A 48656 48404 481568 482290 4 81039 482507 482565 482580 481971 WARNING INSTALL BELT COVER BEFORE OPERATING MACHIN.
58 REPLA CEMENT DECALS AND INFORMA TION PLA TES 481921 R 481921 STT-31BSG Decals 2 481925 481664 481663 482710 481663 481664 481921 481937 48314 48825 482165.
LIMITED W ARRANTY - COMMERCIAL EQUIPMENT Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgment of Scag, to be defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealer without charge for parts and labor .
P ART NO. 03121 PRINTED 7/02 PRINTED IN USA © 2002 SCAG POWER EQUIPMENT DIVISION OF MET ALCRAFT OF MA YVILLE, INC..
An important point after buying a device Scag Power Equipment STT-31BSG (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Scag Power Equipment STT-31BSG yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Scag Power Equipment STT-31BSG - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Scag Power Equipment STT-31BSG you will learn all the available features of the product, as well as information on its operation. The information that you get Scag Power Equipment STT-31BSG will certainly help you make a decision on the purchase.
If you already are a holder of Scag Power Equipment STT-31BSG, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Scag Power Equipment STT-31BSG.
However, one of the most important roles played by the user manual is to help in solving problems with Scag Power Equipment STT-31BSG. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Scag Power Equipment STT-31BSG along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
