Scag MAG User Manual

OPERATOR'S MANUAL

MAGNUM III MODEL MAG

FROM SERIAL NUMBER 70001 TO 79999

PART 03034

WARNING

FAILURE TO FOLLOW SAFE OPERATING PRACTICES

MAY RESULT IN SERIOUS INJURY.

* Keep all shields in place, especially the grass discharge chute. * Before performing any maintenance or service, stop the machine and remove the spark plug wire and ignition key. * If a mechanism becomes clogged, stop the engine before cleaning. * Keep hands, feet and clothing away from power-driven parts. * Read this manual completely as well as other manuals that came

with your mower.

* Keep others off the tractor (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, 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:

All MAG Machines

with a serial number of 27870001- 27879999

Always use the entire serial number listed on the serial number tag when referring to this product.

Section 1

GENERAL INFORMATION

1.1 INTRODUCTION

Your mower was built to highest standards in the industry. However, the prolonged life and maximum efficiency of your mower depend on you following the operating, maintenance and adjustment instructions in this manual.

If additional information or service is needed, contact your Scag Power Equipment Dealer.

We encourage you to contact your dealer for repairs. All Scag dealers are informed of the latest methods to service this equipment and provide prompt and efficient service in the field or at their service shop. They carry a full line of Scag service parts.

USE OF OTHER THAN ORIGINAL SCAG REPLACEMENT PARTS WILL VOID THE WARRANTY.

When ordering parts, always give the model and serial number of your tractor and cutting deck. The serial plates are located where shown in Figure 1-1.

For pictorial clarity, some illustrations and Figures in this manual may show shields, guards or plates open or removed. Under no circumstances should your mower be operated without these devices in place.

All information is based upon product information available at time of approval for printing. Scag Power Equipment reserves the right to make changes at any time without notice and without incurring any obligation.

1.2 DIRECTION REFERENCE

The Right and Left, Front and Rear of the machine are referenced from the operators right and left when seated in the normal operating position and facing the forward travel direction.

1.3 SERVICING THE ENGINE AND DRIVE TRAIN COMPONENTS

The detail servicing and repair of the engine, hydraulic pump and motors and gear boxes are not covered in this manual; only routine maintenance and general service instructions are provided. For service of these components during the limited warranty period, it is important to contact your Scag dealer or find a local authorized servicing agent of the component manufacturer. Any unauthorized work done on these components during the warranty period may void your warranty.

Tractor Serial Number Plate Location

Figure 1-1 Serial Plate Locations

Cutter Deck Serial Number Plate Location

SAFETY INFORMATION

2.1 INTRODUCTION

Your mower is only as safe as the operator. Carelessness or operator error may result in serious bodily injury or death. Hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper training of the personnel involved in the operation, transport, maintenance and storage of the equipment. Make sure every operator is properly trained and thoroughly familiar with all the controls before operating the mower.

Section 2

The signal word DANGER denotes that an extremely hazardous situation exists on or near the machine that could result in high probability of death or irreparable injury if proper precautions are not taken.

WARNING:

READ THIS OPERATORS MANUAL BEFORE ATTEMPTING TO START YOUR MOWER.

A replacement manual is available from your authorized Scag Service Dealer or by Contacting Scag Power Equipment, Service Department at P.O. Box 152, Mayville, WI 53050. There is nominal charge of $2.00 for each manual. Please indicate the complete model and serial number of your Scag product.

2.2 SIGNAL WORDS

This symbol means Attention! Become Alert! Your Safety is Involved!" The symbol is used with the

following signal words to attract your attention to safety messages found on the decals and throughout this manual. The message that follows the symbol contains 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 distinctive word on safety decals and throughout this manual that alerts the viewer to the existence and relative degree of the hazard.

The signal word WARNING denotes a hazard exists on or near the machine that can result in injury or death if proper precautions are not taken.

CAUTION:

The signal word CAUTION is a reminder of safety practices on or near the machine that could result in personal injury if proper precautions are not taken.

Your safety and the safety of others depend significantly upon your knowledge and understanding of all correct operating practices and procedures of this machine.

2.3 BEFORE OPERA TION CONSIDERATIONS

1. NEVER allow children to operate this riding mower. Do not allow adults to operate this machine without proper instructions.

2. DO NOT mow when children and/or others are present.

3. Clear the area to be mowed of objects that could be picked up and thrown by the cutter blades.

4. DO NOT carry passengers.

5. DO NOT wear loose fitting clothing that could get caught in moving parts. Do not operate the machine wearing shorts; always wear adequate protective clothing including long pants. Wearing safety glasses, safety shoes and a helmet is advisable and is required by some local ordinances and insurance regulations.

Section 2

6. Prolonged exposure to loud noise can cause hearing impairment or loss. Operator hearing protection is recommended, particularly for continuous operation of the mower. Wear suitable hearing protection.

7. Keep the machine and attachments in good operating condition. Keep all shields and safety devices in place. If a shield, safety device or decal is defective or damaged, repair or replace it before operating the

machine.

WARNING:

This machine is equipped with an interlock system intended to protect the operator and others from injury. This is accomplished by preventing the engine from starting unless the parking brake is applied and the blades are disengaged. The system also shuts off the engine if the operator removes his foot from the interlock pedal with the mower running and the parking brake not engaged. Never operate equipment with the interlock system disconnected or malfunctioning.

2.4 OPERATION CONSIDERATIONS

1. Know the function of all controls and how to stop quickly.

2. Reduce speed and exercise extreme caution on slopes and in sharp turns to prevent tipping or loss of control. Be especially cautious when changing directions on slopes.

WARNING:

DO NOT operate on steep slopes. To check a slope, attempt to drive up it (with cutter deck down). If machine can drive up the slope without the wheels slipping, reduce speed and use extreme caution. ALWAYS FOLLOW OSHA APPROVED OPERATION.

3. Do not stop or start suddenly. WHEN GOING UPHILL OR DOWN HILL, MOW UP AND DOWN THE FACE OF SLOPES, NEVER ACROSS THE FACE.

8. Be sure interlock switches are functioning correctly .

9. Fuel is flammable; handle with care.

10.Equipment must comply with the latest requirements per ANSI J137 and/or ANSI S279 when driven on public roads.

11.DO NOT operate without a chute deflector installed; keep the deflector in lowest possible position.

12.Check the blade mounting bolts at frequent intervals for proper tightness.

13.Make sure all hydraulic fluid connections are tight and all hydraulic hoses and lines are in good condition before starting the machine.

4. When using any attachment, never direct the discharge of material toward bystanders nor allow anyone near the machine while in operation.

5. Before attempting to start the engine, disengage power to all attachments and engage the parking brake. DO NOT depress the right foot pedal.

6. If the mower discharge ever plugs, shut off the engine, remove the ignition key, and wait for all movement to stop before removing the obstruction.

7. Be alert for holes, rocks, and roots in the terrain and other hidden hazards. Keep away from any drop off. Beware of overhead obstructions (low limbs, etc.), underground obstacles (sprinklers, pipes, tree roots, etc.). Cautiously enter a new area. Be alert for hidden hazards.

8. Disengage power to mower before backing up. Do not mow in reverse unless absolutely necessary and then only after observation of the entire area behind the mower.

Section 2

9. DO NOT turn sharply. Use care when backing up.

10.Use counterweights or wheel weights when suggested in this manual.

11.Watch for traffic when crossing roads or operating near roadways

12.Mow only in daylight or good artificial light.

13.Take all possible precautions when leaving the machine unattended, such as disengaging the mower, lowering the attachments, setting the parking brake, stopping the engine, and removing the key.

14.Disengage power to the attachments when transporting or when not in use.

15.The machine and attachments should be stopped and inspected for damage after striking a foreign object, and damage should be repaired before restarting and operating the machine.

16.DO NOT touch the engine or the muffler while the engine is running or immediately after stopping. These areas may be hot enough to cause a burn.

2.5 MAINTENANCE CONSIDERATIONS

1. Never make adjustments to the machine with the engine running unless specifically instructed to do so. If the engine is running, keep hands, feet, and clothing away from moving parts.

2. Remove the key from the ignition switch to prevent accidental starting of the engine when servicing or adjusting the machine.

3. Keep all nuts, bolts and screws tight to ensure the machine is in safe working condition. Check blade mounting bolts frequently to be sure they are tight.

4. Do not change the engine governor settings or overspeed the engine.

5. To reduce fire hazard, keep the engine free of grass, leaves, excessive grease and dirt.

6. Hydraulic fluid is under high pressure. Keep body and hands away from pin holes or nozzles that eject hydraulic fluid under high pressure. Use only cardboard or paper to search for leaks.

7. Hydraulic fluid under high pressure may have sufficient force to penetrate skin and cause serious injury. If hydraulic fluid is injected into the skin it must be surgically removed within a few hours by a doctor or gangrene may result.

Section 2

2.6 SAFETY AND INSTRUCTIONAL DECALS

DANGER

SPINNING BLADE

KEEP CLEAR

CONTACT CAN INJURE

48071

WARNING

ROTATING BLADES AND BELTS

KEEP HANDS, FEET & CLOTHING CLEAR KEEP ALL GUARDS IN PLACE SHUT OFF ENGINE & DISENGAGE BLADE CLUTCH BEFORE SERVICING CLEAR AREA OF DEBRIS BEFORE MOWING USE CAUTION IN DIRECTING DISCHARGE KEEP BYSTANDERS, CHILDREN & PETS AWAY READ INSTRUCTION MANUAL BEFORE OPERATING

DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING

KIT, OR ENTIRE GRASS CATCHER INSTALLED

481040

WARNING

INSTALL BELT COVER BEFORE

OPERATING MACHINE

READ OPERATOR'S MANUAL

481039

Section 3

3.1 ENGINE

SPECIFICATIONS

General Type ............................................................................. Heavy Duty Industrial/Commercial Diesel

Brand ......................................................................................... Kubota 28 HP Super 5 Series, Electric Start

Model ......................................................................................... D1105-B

Horsepower ................................................................................ SAE Gross Intermittent, 28 HP @ 3000 RPM

Type ........................................................................................... Horizontal Shaft, Water Cooled, 4-Cycle Diesel

Displacement ............................................................................. 1123 cc.

Low Idle..................................................................................... 850 - 950 RPM

Cylinders ................................................................................... 3

Order of Firing .......................................................................... 1-2-3

Direction of Rotation ................................................................. Counter-clockwise (Viewed From Flywheel End)

Fuel Injection Pump .................................................................. Bosch MD Type, Mini Pump

Injection Pressure ...................................................................... 1,991 psi

Injection Timing (Before T.D.C.) ............................................. 19°

Compression Ratio .................................................................... 23:1

Starting System ......................................................................... Electric Starting with Cell Starter, Glow Plug In Combustion

Chamber

Fuel ............................................................................................ Diesel Fuel No. 2 -D (ASTM D975)

Oil Type ..................................................................................... API Sandard, CD Grade or Better

Oil Filter .................................................................................... Full Flow Oil Filter Cartridge

Oil Capacity ............................................................................... 4 Quarts With Filter

Cooling Pressurized, Sealed Cooling System, 170° F Thermostat, Blade

Fan, Cooling Capacity 8 Quarts Belts:

Alternator .............................................................................. See Engine Manual for Part Number

Fan......................................................................................... Scag Part Number - 481114

Electric Clutch ...................................................................... Scag Part Number - 481104

Hydraulic Pump .................................................................... Scag Part Number - 481103

3.2 ELECTRICAL

Battery ....................................................................................... 12 Volt

Charging System ....................................................................... Alternator

Charging Output ....................................................................... 12 Volt, 30 Amp

System Polarity .......................................................................... Negative Ground

Starter ........................................................................................ 12 Volt Electric Ring Gear Type, Key and Solenoid Operated

Interlock Switches ..................................................................... Left Foot Pedal, Blade Brake, and Parking Brake

Fuses .......................................................................................... Two (2) 30 Amp

3.3 TRACTOR

Drive Motors ............................................................................. 12 Cu. In. Cast Iron High Torque Motors

Steering ...................................................................................... Chain and Sprocket

Forward and Reverse Control ................................................... Pedal Operated Linkage Connected To The Hydraulic Pump

Parking Brake ............................................................................ Lever Actuated Linkage to Drum Brakes on Both Drive Wheel

Assemblies Wheels:

(2) Front Caster .................................................................... 12 x 3.5

(2) Drive ............................................................................... 2 x 10.5 -12, 4-ply Pneumatic Tubeless, Radius Edge

(1) Rear ................................................................................ 18 x 8.50 -8 NHS

Fuel Tank ................................................................................... Seamless Polyethylene Tank; 8 Gallon Capacity

Tire Pressure:

Front Caster .......................................................................... 25 PSI

Drive..................................................................................... 15 PSI

Rear ...................................................................................... 15 PSI

Section 3

3.3 TRACTOR (CONT'D)

Seat ............................................................................................ Milsco Seat With Adjustment Lever For Forward and Back

Movement Travel Speed:

Forward ................................................................................ 0 - 8 MPH Infinitely Variable

Reverse ................................................................................. 0 - 4.3 MPH Infinitely Variable

3.4 CUTTER DECK

No. of Blades ............................................................................. 3

Width of Cut:

Mag-61 ................................................................................. 61 in.

Mag-72 ................................................................................. 72 in.

Blade Size:

Mag-61 ................................................................................. 1/4 thick x 21" long, milled edge, 5150 alloy steel

Mag-72 ................................................................................. 1/4 thick x 24-1/2" long, milled edge, 5150 alloy steel

Blade Spindles ........................................................................... Cast Iron with Easy Removable Taper Hubs

Deck Drive................................................................................. Belt Driven Electric Clutch Connected to Drive Shaft to

Gearbox on Deck

Electric Clutch Type ................................................................. Warner Mag Stop Electric Clutch

Blade Brake ............................................................................... Lever Controlled Linkage to Band Type Brake. Brake Hub

Connected to Drive Shaft

Cutting Height ........................................................................... Switch on Instrument Panel Controls Electric Actuator;

Cutting Heights - 1-1/2" to 5-1/2"

Deck Tilt .................................................................................... Switch on Instrument Panel Controls Electric Actuator

Cutter Deck Belts:

Blade and Gearbox Drive (Mag-61) .................................... Scag Part Number - 48204

Blade and Gearbox Drive (Mag-72) .................................... Scag Part Number - 48089

Blade Drive (Mag-61) .......................................................... Scag Part Number - 48265

Blade Drive (Mag-72) .......................................................... Scag Part Number - 481295

Gearbox Type ............................................................................. Sealed Housing, Bevel Gear and Pinion Type

Drive Shaft ................................................................................ Quick-Disconnect Shaft With Two High Speed U-Joints

3.5 HYDRAULIC SYSTEM

Hydraulic Pump ......................................................................... Sunstrand Series 15

Hydraulic Cooler ....................................................................... Part of Radiator

Hydraulic Oil Filter ................................................................... 10 Micron Spin-on Element Type

Hydraulic Reservoir................................................................... High Density Polyethylene; 13 Quart Capacity

3.6 WEIGHTS AND DIMENSIONS

Length:

Mag-61 ................................................................................. 120.0"

Mag-72 ................................................................................. 120.0"

Tracking Width:

Mag-61 ................................................................................. 54.0"

Mag-72 ................................................................................. 54.0"

Overall Width:

Mag-61 ................................................................................. 73.0"

Mag-72 ................................................................................. 84.0"

Overall Width (with Discharge Chute Up):

Mag-61 ................................................................................. 62.0"

Mag-72 ................................................................................. 73.0"

Overall Height ........................................................................... 51.0"

Operating Weight:

Mag-61 ................................................................................. 1,750 lb.

Mag-72 ................................................................................. 1,800 lb.

OPERATING INSTRUCTIONS

CAUTION:

Do not attempt to drive this mower unless you have read this manual. Learn the location and purpose of all controls and instruments before you operate this mower.

4.1 CONTROLS AND INSTRUMENT IDENTIFICATION

Before operating the mower, familiarize yourself with all mower and engine controls. Knowing the location, function and operation of these controls is important for safe and efficient operation of the mower.

A. Instrument Panel (See Figure 4-1)

1. Ignition Switch: The ignition switch is used to start and stop the engine and has four positions; PREHEAT, OFF, ON, and START. Rotate the key to the PREHEAT position to energize the glow plug. Hold the key at the PREHEAT position until the yellow indicator light for the glow plug turns off, then release and rotate the key to the START position.

Section 4

Do not hold the key in the START position longer than 15 seconds. If the engine does not start, return the key to the OFF position for at least 60 seconds before a restart attempt is made. Prolonged cranking can damage the starter motor and shorten battery life. Release the key when the engine starts and it will automatically return to the run position. To stop the engine, rotate the key counter-clockwise to the OFF position.

2. Glow Plug Indicator Light: Yellow indicator turns off when glow plugs have been properly energized after the ignition switch is turned and held in the PREHEAT position.

3. Hourmeter: Indicates the number of hours the engine has been operated. It operates whenever the ignition key is in the ON position. Can be used to keep track of maintenance intervals and the amount of time required to perform various tasks.

4. Voltmeter: Indicates the battery condition and charge level.

Engine

Oil Pressure

Switch

Blade Brake

Control

Lever

Hourmeter

Temperature Gauge

Mower

Deck Lift

Switch

Figure 4-1 Instrument Panel

Mower

Deck Height

Switch

Fuel Gauge

Voltmeter

Ignition

Switch

Throttle

Lever

Fuse

Holders

Glow Plug

Indicator

Light

Section 4

INTERLOCK

PEDAL

5. Temperature Gauge: Indicates engine coolant temperatures. Green zone indicates proper working temperature. Red zone indicates engine over heating and the engine should be shut off immediately.

6. Fuel Gauge: Indicates the amount of fuel in the fuel tank.

7. Engine Oil Pressure Indicator Light: Indicator will light if oil pressure drops below a safe operating pressure. Stop the engine immediately; determine the cause and correct the problem before continuing operation.

8. Mower Deck Lift Switch: This switch raises and lowers the deck for road travel, etc. Pushing the switch forward tilts the mower deck back. Pulling the switch back tilts the deck forward.

Parking Brake

Lever

Forward/Reverse

Foot Pedal

Figure 4-2

C. Foot Pedals

9. Mower Deck Height Switch: This switch raises and lowers the cutting height of the mower deck. An indicator is located above the deck that gives the cutting height setting. Pushing the switch forward raises the deck cutting height. Pulling the switch back lowers the deck cutting height.

10.Fuse Holders: Two 30 amp fuses protect the mowers electrical system. To replace fuses, pull fuse out of socket and install new fuse.

B. Levers

1. Blade Brake Control Lever (Figure 4-1): Used to engage and disengage the mower blade brake. Pulling the lever down and to the right engages the brake and stops the blades from rotating. Pushing the lever up and to the left disengages the brake, allowing blades to rotate.

2. Throttle Lever (Figure 4-1): Regulates engine speed. Push the lever forward to increase or pull the lever backwards to decrease the engine speed.

3. Parking Brake Lever (Figure 4-2): Used to engage and disengage the parking brakes. Pull the lever backwards to engage the parking brake. Push the lever forward to disengage the parking brake.

1. Forward/Reverse Foot Pedal (Figure 4-2): Used to select the travel direction of the mower. Pressing the pedal forward moves the mower in the forward direction. Pressing the pedal backwards moves the mower in the backward (reverse) direction.

2. Interlock Switch Pedal (Figure 4-3): Stops the mower when operator's left foot in raised off the pedal.

Figure 4-3 Interlock Pedal

Section 4

4.2 SAFETY INTERLOCK SYSTEM

This mower is equipped with a safety system that prevents the engine from starting unless the mower blade brake is disengaged and parking brake is engaged. The system also shuts the engine off if the operator's left foot is raised from the interlock pedal with the mower and parking brakes disengaged.

WARNING:

Never operate the mower with the interlock system disconnected or malfunctioning. Do not disconnect or bypass any switch; injury to yourself and others or property damage could result.

If the safety interlock system is malfunctioning or if you want to ensure that it is working properly, perform the tests in Table 4-1. Stop the test and have the system inspected and repaired if:

4.3 INITIAL RUN-IN PROCEDURES (First Day of Use or Approximately 10 Hours)

1. Check all belts for proper tension at 2, 4 and 8 hours; adjust as needed.

2. Check the neutral adjustment. If necessary, adjust the linkage so that the mower does not move when forward and reverse pedal is in neutral (See Adjustments in Section 6).

3. Check the tires for proper inflation (See Section 7-2).

4. Check for loose hardware. Tighten as needed.

5. Perform Interlock Tests in Table 4-1.

6. Apply lubricant to all machine grease fittings. See Lubrication Chart in Section 7.2.

 the engine does not start in test 1, or

 the engine does start during tests 2 and 3, or

 the engine continues to run during tests 4 and 5.

Table 4-1 Interlock System Tests

Left Foot Parking Mower Engine Lifted From Brake Blade Operates Interlock Brake Pedal

Test Yes No On Off On Off Yes No

1 - X X X X 2 X X X X 3 - X X X X 4 X X X X 5 X X X X

Section 4

4.4 DIESEL ENGINE BREAK-IN

The proper break-in of a new diesel engine can make a difference in the performance and life of the engine. Perform the following break-in procedure during the first 50 hours of operation:

1. A new engine should be operated with as near full load as possible. However, the engine must be allowed to reach an operating temperature before operating at full load conditions.

2. The engine oil should be checked twice daily. Higher than normal oil consumption is not uncommon during the initial break-in period.

3. Change the oil and filter element after the first 40 hours of operation.

4. Check all engine belts for proper tension after the first 10 hours of operation and adjust, if necessary. Refer to Adjustments in Section 6.

4. Turn the ignition key switch to the PREHEAT position until the indicator light for the glow plug glows bright red. The colder the temperature, the longer it will take to energize the glow plug. This step is not necessary when starting a warm engine.

5. Turn the ignition key switch to START position and release the key as soon as the engine starts. Do not hold the key in the START position for more than 15 seconds at a time. Allow at least 60 seconds between each cranking attempt to inhibit overheating the starter motor. Prolonged cranking can damage the starter motor and shorten battery life.

6. Allow engine to warm to operating temperature.

4.6 OPERATOR COMFORT ADJUSTMENTS

Two adjustments can be made to make your mowing job comfortable. The steering handle can be adjusted up or down and the seat can be adjusted forward or back.

5. During the break-in period, check and tighten all engine hardware.

4.5 STARTING THE DIESEL ENGINE

CAUTION:

DO NOT USE STARTING FLUIDS. Use of starting fluids in the air intake system may be potentially explosive or cause “Runaway” engine condition that could result in engine damage and/or personal injury.

1. Be sure the fuel shut-off valve is completely open. The valve is located in the fuel line between the fuel tank and electric fuel pump (See Section 7).

2. Sit in the operators seat and depress the interlock foot pedal with your left foot. Make sure the parking brake and mower blade brake are engaged.

A. Adjusting Steering Handle Height

1. Remove the hardware securing the handle to the steering shaft. Two sets of holes are available to adjust the handle height.

Hardware

Second Bolt Hole

Figure 4-4 Steering Handle Adjustment

2. Move the handle to align with the other holes in the steering shaft. Install the hardware and tighten.

3. Set throttle lever to 3/4 throttle.

Section 4

B. Seat Adjustment

1. Pull the handle on the left side of seat (Figure 4-5) and move the seat either forward or back.

2. Release the handle to lock the position.

Figure 4-5 Seat Adjustment

4.7 ADJUSTING GROUND SPEED AND

DIRECTION

-NOTE-

If you are not familiar with the operation of the hydrostatic drive, practice turning and maneuvering with the foot controls before engaging the blades. Learn the operation in an open area away from buildings, fences, or obstructions. Learn the operation on a flat ground before operating on slopes. Start maneuvering with SLOW engine speed until you are familiar with all operating characteristics. Practice maneuvering the mower until you can make it go exactly where you intend.

1. To travel forward, depress the right foot pedal at the toe. (See Figure 4-6). The further the pedal is depressed the faster the mower will travel forward.

Figure 4-6 Forward - Depress Toe End of Pedal

-NOTE-

Before shifting from forward to reverse, or reverse to forward, come to complete stop then shift the foot pedal to the desired direction.

2. To travel backwards (reverse), depress the right foot pedal at the heel (See Figure 4-7). The further the pedal is depressed the faster the mower will travel backwards. Use slower traveling speed when traveling backwards and observe the area behind you before moving.

-NOTE-

If the mower is driven on public roads, it must comply with state and local ordinances as well as SAE J137 and/or ASME S279 requirements. Contact your local authorities for regulations and equipment requirements.

-NOTE-

The left operator foot pedal must be depressed before operation.

Figure 4-7 Backward (Reverse) Operation- Depress

Heel End of Pedal

Section 4

3. Check that all systems function correctly.

4. When traveling, the throttle control can be adjusted to increase or decrease travel speed.

5. Reduce speed when turning around trees, shrubs, etc.

IMPORTANT:

Avoid high-speed turns on all surfaces. Tires can slip on grass and can wear rapidly on concrete and asphalt.

6. When going over curbs, first activate the mower deck lift switch to fully raise the deck to clear the curb. Go FORWARD over the curb.

4.8 ENGAGING THE MOWER

1. Set engine throttle about 1/2 speed. Do not attempt to engage the blade at high engine speed as this

shortens the electric clutch life  use only moderate engine speed when engaging the blades.

3. Always operate the engine at full throttle to properly maintain cutting speeds. If the engine starts to lug down, reduce the forward speed to allow the engine to operate at maximum RPM.

4.9 HILLSIDE OPERATION

WARNING:

To minimize the possibility of overturning, the least dangerous method of operating on hills and terraces is to travel vertically up and down the slope, not horizontally along the slope. Avoid any unnecessary turns and travel at reduced speed.

1. The mower has been designed for good traction and stability under normal mowing conditions. However, caution must be used when traveling on slopes, especially when the grass is wet. Wet grass limits traction and steering control.

2. Engage the mower blades by moving the blade brake lever down and to the right.

WARNING:

A safety interlock switch (left foot pedal) will cause the engine to stop if the blade brake is disengaged, and the left foot pedal is not depressed. The function of the switch should be checked by the operator raising his left foot and disengaging the blade brake; the engine should stop. If the switch is not working, it should be repaired or replaced before operating the mower. Do not disconnect the interlock safety switches because they are for the operator’s protection.

-IMPORTANT-

Do not engage the mower blades when transporting the mower across drives, loose materials, etc.

2. To inhibit tipping or loss of control, do not start or stop suddenly, avoid unnecessary turns and travel at a reduced speed.

3. Keep tires properly inflated.

4. Always travel up or down the slope, whenever possible; NEVER across the slope.

5. If the mower cannot climb the slope, the grade is too steep for safe operation. Do not make another attempt to climb the slope. Engage the blade brake to stop the blades and back down slowly.

Figure 4-8 Proper Operation on Slope

Section 4

-IMPORTANT-

If at all possible, do not engage the mower brake with engine running at high speed, since premature wear of the electric clutch will occur. Lower speed to near idle then engage the brake.

CAUTION:

The blade brake stops the blades from rotating. If the blades do not stop, contact your Scag Dealer.

CAUTION:

Remove the key from the ignition switch when leaving the mower unattended to inhibit children and inexperienced operators from starting the engine.

Figure 4-9 Improper Operation on Slope

4.10 STOPPING

1. Slow engine speed to idle.

2. Place the right foot pedal in the center (neutral) position.

3. Engage the blade brake.

4. Engage the parking brake and turn ignition key to OFF.

4.1 1 AFTER OPERA TION

1. Park the mower on a flat and level surface and fully lower the cutting deck to the ground. Stop the engine and engage the parking and blade brakes. Remove the key from the ignition switch.

-IMPORTANT-

If the radiator dirt screen is not removed and cleaned after every use, the screen will become clogged with grass clippings, etc., blocking the air flow through the radiator. This will cause a high engine operating temperature that may cause damage to the engine.

2. Clean the radiator dirt screen. See Section 7 for radiator dirt screen removal and cleaning instructions..

3. Wash the entire mower after each use. Do not use high pressure spray or direct the spray onto electrical components.

Section 4

-IMPORTANT-

Do not wash a hot or running engine. Use compressed air to clean the engine and the radiator fins. Cold water will damage the engine and/or radiator.

4. Keep the entire mower clean to inhibit serious heat damage to the engine or hydraulic oil circuit.

5. Recheck the cutter drive belts for proper tension, alignment and any signs of rubbing. Correct and adjust as necessary.

6. Fill the fuel tank with fresh, clean fuel at the end of every day of operation.

7. Check the tire pressure. Inflate tires if necessary.

4.12 MOVING MOWER WITH THE ENGINE

STOPPED

To free-wheel or move the mower around without the engine running, rotate the dump valve handle (screw and nut) located on the side of the hydraulic pump to full open position. See Figure 4-10. Disengage the parking brake and move the mower by hand. The lever must be returned to the original position to operate the mower.

4.13 RECOMMENDATIONS FOR MOWING

1. Keep the mower deck and discharge chute clean.

2. Mow with sharp blades. A dull blade will tear grass, resulting in poor lawn appearance and takes extra power (slow mowing speed).

3. The discharge deflector must not be removed and must be kept in the lowest position to deflect grass clippings and thrown objects downward. Orient the side discharge away from sidewalks or street to minimize cleanup of clippings. When mowing close to obstacles, orient the discharge away from obstacles to reduce the chance of property damage by thrown objects.

4. Cut grass when it is dry and not too tall. Mow frequently and do not cut grass too short (cut off 1/3 or less of existing grass for best appearance).

5. Operate the engine at or near full throttle for best cutting. Mowing with a lower RPM causes the mower to not cut clean and tear the grass. The engine is designed to be operated at full speed.

6. Use slow travel speed for trimming purposes.

7. When mowing tall or wet grass, mow the grass twice. Raise the mower to the highest setting for the first pass and then make a second cutting pass to the desired height.

Dump Valve

Handle

Figure 4-10 Dump Valve Handle

8. Be sure the mower is leveled properly for a smooth cut. See Section 7, Adjustments.

Open

9. Use alternate stripe mowing pattern for best appearance and vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass.

4.14 ADJUSTING CUTTING HEIGHT

The mower deck height switch on the instrument panel is used to adjust the cutting height of the deck. Do not adjust the cutting height while the mower is moving. Stop the mower, then activate the deck height switch to position the deck at the desired height. A gauge is located on the right front of the mower (See Figure 4-11) for use in selecting the proper cutting height.

Figure 4-11 Mower Cutting Height Gauge

Section 4

4.15 TILTING THE MOWER DECK

CAUTION:

Do not tilt the deck with the mower blades rotating. Engage the blade brake before tilting the deck. Bodily injury or damage to the mower or property could result.

1. Stop the traveling movement of the mower and engage the blade brake.

2. Use the deck tilt control switch on the instrument panel to raise the deck.

3. Before lowering the deck, observe that there are no objects under the deck. Remove any objects then, activate the deck tilt switch to lower the deck.

Section 5

TROUBLESHOOTING CUTTING CONDITIONS

CONDITION

CAUSE

CURE

Stringers - Occasional Low engine RPM Run engine at full 3600 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 Clean underside of deck

Width of Deck

SGB020

Belts slipping Adjust belt tensions

Streaking - Strips of Dull, worn blades Sharpen blades Uncut Grass in Cutting Path Incorrect blade sharpening Sharpen blades

Low engine RPM Run engine at full 3600 RPM Belt slipping Adjust belt tension Deck plugged, grass accumulation Clean underside of deck Ground speed too fast Slow speed to adjust for conditions Wet grass Cut grass after it has dried out

Width of Deck

SGB018

Bent blades Replace blades

Streaking - Strips of Not enough overlapping Increase the overlap of each Uncut Grass Between between rows pass Cutting Paths

Width

Deck

SGB019

Width

Deck

TROUBLESHOOTING

Section 5

CONDITION

CAUSE

CURE

Uneven Cut on Flat Lift worn off of blade Replace blade Ground - Wavy High-Low Blade upside down Mount with cutting edge toward Appearance, ground Scalloped Cut, or Rough Contour 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 Dull blade Sharpen blade

Width of Deck

SGB020

Uneven Cut on Uneven ground May need to reduce ground speed, Uneven Ground - raise cutting height, and/or change Wavy Appearance, direction of cut High-Low Scalloped Cut, or Rough Contour

Width of Deck

SGB021

Sloping Ridge Across Tire pressures not equal Check and adjust tire pressure Width of Cutting Path

Wheels uneven Check and adjust tire pressure Deck mounted incorrectly See your authorized SCAG dealer

Width of Deck

SGB023

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