Scag STT-31BSG User Manual 2

MODEL STT-31BSG

OPERATOR’S MANUAL

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 CONTAINED ON THE INSIDE COVER. BEFORE OPERATING YOUR MACHINE, PLEASE READ ALL THE INFORMATION ENCLOSED.

PART NUMBER 03093

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 wires 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:

ST T-31BSG with a serial number of 6830001 to 6839999 SMST-61A with a serial number of 6850001 to 6859999 SMST-72A with a serial number of 6860001 to 6869999

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

TABLE OF CONTENTS

SUBJECT PAGE Section 1 - General Information

1.1 Introduction .............................................................................................................................1

1.2 Directional Reference .............................................................................................................1

1.3 Servicing the Engine and Drive Train Components ................................................................1

Section 2 - Safety Information

Symbols ............................................................................................................................... 2-3

2.1 Introduction .............................................................................................................................4

2.2 Signal Words ...........................................................................................................................4

2.3 Before Operation Considerations ...........................................................................................4

2.4 Operation Considerations ........................................................................................................5

2.5 Maintenance Considerations ...................................................................................................6

2.6 Safety and Instructional Decals ..............................................................................................7

Section 3 - Specifications ....................................................................................................... 8-9

Section 4 - Operating Instructions

4.1 Controls and Instrument Identification ..................................................................................10

4.2 Safety Interlock System........................................................................................................ 11

4.3 Initial Run-In Procedures ......................................................................................................12

4.4 Starting the Engine ................................................................................................................ 12

4.5 Ground Travel and Steering ..................................................................................................12

4.6 Engaging the Deck Drive ..................................................................................................... 13

4.7 Hillside Operation .................................................................................................................14

4-8 Parking the Mower ............................................................................................................... 14

4.9 After Operation .................................................................................................................... 14

4.10 Removing Clogged Material ................................................................................................. 15

4.11 Moving Mower with Engine Stopped ................................................................................... 15

4.12 Recommendations for Mowing .............................................................................................15

4.13 Adjusting Cutting Height ....................................................................................................... 16

Section 5 - Troubleshooting Cutting Conditions.............................................................. 17-19

TABLE OF CONTENTS (CONT'D)

SUBJECT P AGE

Section 6 - Adjustments

6.1 Parking Brake Adjustment ....................................................................................................20

6.2 Travel Adjustments ............................................................................................................... 20

6.3 Throttle Control and Choke Adjustments .............................................................................. 22

6.4 Belt Adjustment .................................................................................................................... 22

6.5 Belt Alignment ...................................................................................................................... 22

6.6 Cutter Deck Adjustments ..................................................................................................... 23

Section 7 - Maintenance

7.1 Maintenance Chart ............................................................................................................... 25

7.2 Lubrication Fitting Points ...................................................................................................... 26

7.3 Hydraulic System ..................................................................................................................28

7.4 Engine Oil ............................................................................................................................. 29

7.5 Engine Fuel System .............................................................................................................. 30

7.6 Engine Air Cleaner................................................................................................................ 30

7.7 Battery .................................................................................................................................. 30

7.8 Drive Belts ............................................................................................................................32

7.9 Cutter Blades ........................................................................................................................32

7.10 Tires ...................................................................................................................................... 33

7.11 Cutter Deck Gearbox ........................................................................................................... 34

7.12 Cooling System ..................................................................................................................... 34

7.13 Body, Deck, Hopper and Upholstery .................................................................................... 35

Section 8 - Illustrated Parts List

SMST 61"Adv., 72" Adv. Cutter Decks ................................................................................... 36-37

Cutter Deck Controls ................................................................................................................ 38-39

Sheet Metal Components.......................................................................................................... 40-41

Deck Drive Components .......................................................................................................... 42-43

Radiator, Coolers & Engine Brackets.................................................................................44-45

Brake & Steering Components..... .....................................................................................46-47

Fuel & Hydraulic System ......................................................................................................... 48-49

Electrical System ...................................................................................................................... 50-51

Hydraulic Pump Assembly - BDP-21L .................................................................................... 52-53

Wire Harness, STT-31BSG ............................................................................................................ 54

Replacement Decals ................................................................................................................. 55-56

Section 1

GENERAL INFORMATION

1.1 INTRODUCTION

Your 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.

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.

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 the 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

When ordering parts, always give the model and serial number of your tractor. The serial number plate is located where shown in Figures 1-1.

SERIAL NUMBER PLATE LOCATION

4,991,382

4,998,948

4,118,617

4,487,006

4,885,903

OF THE FOLLOWING PATENTS:

4,920,733

MANUFACTURED UNDER ONE OR MORE

4,967,543

Figure 1-1 Tractor Serial Number Plate Location

PATENTS PENDING

MODEL

SERIAL

Mayville, Wisconsin 53050

Division of Metalcraft of Mayville, Inc.

Patents Issued and Pending

390S0137

The detail servicing and repair of the engine, hydraulic pumps and gearboxes 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.

ISO Symbols

CE Mark

SYMBOL DESCRIPTION

Parking Brake

On/Start

SYMBOL DESCRIPTION

TransmissionChoke

Spinning Blade

48071S

Spring Tension on Idler

Off/Stop

Oil

WARNING

Falling Hazard

FALLING HAZARD

USE ONLY SCAG APPROVED

RIDING ATTACHMENTS

SEE OPERATOR'S MANUAL

481109

SYMBOL DESCRIPTION SYMBOL DESCRIPTION

481039S

Fast

Continuously Variable - Linear

Pinch Point

Slow

Cutting Element - Basic symbol

Cutting Element - Engage

Hourmeter/Elapsed Operating Hours

Thown Object Hazard

Keep Bystanders Away

Cutting Element - Disengage

Read Operator's Manual

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. and thoroughly familiar with all of the controls before operating the mower.

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

Make sure every operator is properly trained

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:

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

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. Please indicate the complete model and serial number of your Scag product when requesting replacement manuals.

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 on the machine 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.

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 depends significantly upon your knowledge and understanding of all correct operating practices and procedures of this machine.

2.3 BEFORE OPERATION 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.

Signal Word:

The signal word is a distinctive word found on the safety decals on the machine and throughout this manual that alerts the viewer to the existence and relative degree of the hazard.

4. DO NOT carry passengers.

Section 2

2.3 BEFORE OPERATION CONSIDERATIONS (CONT'D)

5. DO NOT wear loose fitting clothing that could get tangled 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.

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

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.

10. DO NOT add fuel to a running or hot engine. Allow the engine to cool for several minutes before adding fuel.

11. Keep flammable objects (cigarettes, matches, etc.), open flames and sparks away from the fuel tank and fuel container.

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

-NOTE-

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

13. DO NOT operate without the side discharge chute installed and in the down position.

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 deck drive is disengaged, the parking brake is on, the steering control levers are in the neutral position and the operator is in the seat. The system shuts off the engine if the operator leaves the seat with the deck drive engaged and/or the steering control levers are not in the neutral postion and the parking brake is not engaged. Never operate equipment with the interlock system disconnected or malfunctioning.

8. Be sure the interlock switches are functioning correctly.

9. Fuel is flammable; handle it with care. Fill the fuel tank outdoors. Never fill it indoors. Use a funnel or spout to prevent spillage. Clean up any spillage before starting the engine.

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

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

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. T o check a slope, attempt to back up it (with the cutter deck down). If the machine can back up the slope without the wheels slipping, reduce speed and use extreme caution. ALWAYS FOLLOW OSHA APPROVED OPERATION.

Section 2

2.4 OPERATION CONSIDERATIONS (CONT'D)

3. To 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.

5. Before attempting to start the engine, with the operator in the seat, disengage power to the cutter deck, place the steering control levers in the neutral position and engage the parking brake.

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. Do not use your hand to dislodge the clogged discharge chute. Use a stick or other device to remove clogged material.

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

14. 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.

15. 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.

16. DO NOT run the engine inside a building or a confined area without proper ventilation. Exhaust fumes are hazardous and could cause death.

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.

7. Be alert for holes, rocks, roots and other hidden hazards in the terrain. Keep away from any dropoff. 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 the cutter deck before backing up. Do not mow in reverse unless absolutely necessary and then only after observation of the entire area behind the mower.

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

10. Disengage power to the cutter deck before crossing roads, walks or gravel drives.

11. Mow only in daylight or good artificial light.

12. 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.

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.

4. Do not change the engine governor settings or overspeed the engine. See the engine operator's manual for information on engine settings.

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

6. Hydraulic fluid is under high pressure. Keep body and hands away from pinholes or nozzles that eject hydraulic fluid under high pressure. If you need service on your hydraulic system, please see your authorized Scag dealer. 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

WARNING

INSTALL BELT COVER BEFORE

OPERATING MACHINE

READ OPERATOR'S MANUAL

FORWARD

481039

REVERSE

WARNING

DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING

KIT, OR ENTIRE GRASS CATCHER INSTALLED

482165

481568

IMPORTANT ADJUSTMENT

PROCEDURES

READ OPERATOR'S MANUAL

FOR MORE DETAILS

Check tire pressure-

(Drive tires - 12 psi,

Caster tires - 25 psi)

NEUTRAL ADJUSTMENT

Loosen jam nuts

Rotate turnbuckle

With an operator in the seat,

engine running, control levers

in neutral and the parking brake

disengaged - adjust control

linkage. Loosen jam nuts. If wheel

rotates forward, adjust turnbuckle

CCW. If wheel rotates rearward, adjust turnbuckle CW. Adjust until drive wheel stops turning. Tighten

jam nuts. Repeat for opposite side.

TRACKING ADJUSTMENT

If the machine pulls to the right,

adjust LH control linkage CCW to

slow left wheel. If the machine pulls to the left, adjust RH control linkage CCW to slow right wheel.

Readjust neutral if necessary.

Gearbox lubricant:

SAE 80W90 gear oil

FREE WHEEL OPERATION

To move machine without running

the engine, rotate both dump valve

levers located at the LH side of

the pumps CCW 1/2 turn to

"freewheel" positions. Return

levers to original position to

operate the mower.

HYDRAULIC TANK FLUID LEVEL

Check hydraulic fluid level

daily while fluid is cool.

Fluid level should be 3-1/4"

below top of filler neck.

Fill with SAE 20W50 motor oil only.

IMPORTANT!:

Do not overfill. Room for hot

fluid expansion must be allowed

or resulting expansion may cause

leaks in the system.

390S0150A

481588

Section 3

SPECIFICATIONS

SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDER

MODEL: STT– 31BSG

ENGINE

General Type: Heavy duty industrial/commercial Brand: Briggs Daihatsu Vanguard Liquid Cooled 31 HP Model: DM950G Horsepower: 31 HP @ 3600 RPM Type: water cooled 4 cycle, overhead valve, 3 cylinder, gas engine Displacement: 952 cc Cylinders: 3 inline sleeves Governor: High-speed flyweight governor, runs faster than engine crankshaft, provides precision

speed governing and a steady low idle, 3600 rpm (±100 rpm), idle set at 1500 rpm Air Intake Group: Canister type air filter system. Exhaust Group: Single exhaust canister muffler Fuel Pump Group: Electric fuel pump with mechanical choke and fuel shutdown solenoid Oil Pump Group: Positive displacement Gerotor oil pump with remote oil filter, capacity 3.2 U.S. quarts

(3.0 ltrs) with oil filter Valve Group: Overhead Electrical/Charging System: 12 volt battery with alternator, solid state ignition with key start, 40 amp regulated

charging system using a microprocessor and one ignition coil for each cylinder, solenoid

shift type starter

ENGINE DECK

Fuel Tank: 10 gallon (38.0 litres) seamless polyethylene tank with fuel gauge gas cap Drive Wheels/Tires: 24x12-12 four-ply pneumatic tubeless, radius edge, offset rims to improve operators view Parking Brake: Lever operated interlocked parking brake prevents operation with parking brake engaged Frame: Compact tractor frame with structural steel tubing construction

DRIVE SYSTEM

Type: Hydro drive with two variable displacement pumps and two cast iron motors for

independent control of each drive wheel Hydro Pumps: Two Hydro-Gear Model BDP 21L pumps with dump valves for movement without running

engine Drive Wheel Motors: Two 23 cubic inch cast-iron high torque wheel motors Transmission Belt Idler: Self-adjusting, self-tightening, sealed bearings Hydro Fluid Cooling Group: 6 qt. capacity nylon fluid reservoir, uses SAE 20W50 fluid and 10 micron filter Steering/Travel Control: Twin lever fingertip steering control with gas shock dampeners for smooth, responsive

control to each wheel Axles: 1-1/4" heavy-duty, tapered motor shafts Wire Harness: 14 gauge wire Safety Group: Seat actuated engine kill, neutral interlock, mower engagement (BBC) switch, parking

brake Instrument Panel: Voltmeter, water temperature gauge, oil pressure gauge, key switch, throttle, fuses, manual

choke, BBC switch (hourmeter located at rear of machine) Forward Ground Speed Range: 0 to 10.5 mph Reverse Ground Speed Range: 0 to 5.0 mph

Date of Issue: November, 2000 Specifications Subject To Change Without Notice

-NOTE-

The machine will travel at 10.5 mph for transport purposes. For best cutting performance the forward travel speed should be adjusted depending upon the cutting conditions.

Section 3

SPECIFICATIONS (CON'T)

SCAG “SABRE TOOTH TIGER” ZERO-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. "Advantage" special extended front edge allows Bahia or other tough grasses to enter the deck

standing upright for a clean cutting. Construction: 10-gauge steel top reinforced with 7 gauge support plate, deck skirt is 7 gauge steel True Cutting Width: 72" cutter deck = 71.5 inches (181.6 cm); 61" cutter deck = 61.0" (155.0cm) Cutting Height Adjustment: Foot-operated pedal adjustment from operators seat,

1" to 6" in 1/2" increments Cutter Blades: 72" = Three (3) 24" blades; 61" = Three (3) 21" blades Cutter Deck Drive: Drive shaft to 90 degree gear box Blade Engagement: Electric blade engagement clutch with control panel knob Discharge Opening: Extra wide 11.5" discharge opening with spring loaded discharge chute Caster Wheels: 13 x 5 x 6 caster wheels with tapered roller bearing pivots Spindles: Heavy duty 1-1/8" top dimension spindle shaft, cast housing, taper roller bearing, low

maintenance with top access grease fitting and grease overfill relief poppet Spindle Pulleys: Cast-iron with easily removed taper hubs Cutter Deck Belts: B-section with Kevlar cord Anti-Scalp Rollers: Two front, two rear 4-1/2" adjustable, two rear 12" fixed

ADDITIONAL SPECIFICATIONS

Seat: Thick padded seat cushions with special springs. Padded arm rests, lever adjustment

forward and back.

APPROXIMATE DIMENSIONS

72" 61"

Length: 92.0" 88.0" Tracking Width: 56.0 56.0" Width: 83.5 72.0" Width (with discharge chute up): 73.0 61.5" Height: 47.0 47.0" Turning Radius: zero radius turning zero radious turning Weight: 1550 lbs. 1550 lbs.

PRODUCTIVITY

The following chart will aid you in determining how many acres your Scag mower will cut per day.

The chart is an estimate based on 8 hours per day cutting time at 4 MPH with an allowance for overlap and turns.

Cutting Width: 36" 48" 52" 61" 72"

Acres Per Day: 9.5 12.5 13.5 16 19

Date of Issue: November, 2000 Specifications Subject To Change Without Notice

OPERATING INSTRUCTIONS

CAUTION:

Do not attempt to operate 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.

Section 4

1. Ignition Switch (Figure 4-1). The ignition switch is used to start the engine and has three positions; OFF, ON, and START.

2. Mower Deck Switch (Figure 4-1). Used to engage 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.

3. Engine Choke Control (Figure 4-1). Used to start a cold engine.

4. Engine Throttle Control (Figure 4-1). Used to control the engine speed. Pushing the lever forward increases engine speed. Pulling the lever back decreases engine speed. Full back position is the IDLE position. Full forward is the cutting position.

WA TER TEMPERA TURE

MOWER DECK SWITCH

OIL PRESSURE

IGNITION SWITCH

VOLTMETER

LEFT STEERING

PARKING BRAKE

START

OFF

CONTROL

ENGINE THROTTLE

MOWER DECK

PULL OUT TO ENGAGE

CONTROL

PUSH IN TO DISENGAGE

ENGINE CHOKE

CONTROL

481669

FUSES

DUMP VALVE

DECK LIFT

RIGHT STEERING

CONTROL

CUTTING HEIGHT

ADJUSTMENT

DECK RELEASE

irjf;o3rf

aljalefja

sorgf

aljalefja

afkrjf ;w

CHOKE

OFF

481348

FUEL GAUGE

HOURMETER

Figure 4-1 Controls and Instruments

BSG99CONTROLS

Section 4

5. Voltmeter (Figure 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. Reference the engine operator's manual for further information.

7. Hourmeter (Figure 4-1). Indicates the number of hours the engine has been operated. It operates whenever the engine is running. It can be used to keep track of maintenance intervals and the amount of time required to perform various tasks.

8. Fuse Holders (Figure 4-1). There are two 20amp fuses and one 40-amp fuse that protect the mowers electrical system. To replace fuses, pull fuse out of the socket and install a new fuse.

9. Left Steering Control (Figure 4-1). Used to control the mower's left wheel when traveling forward or reverse.

DUMP VALVE

CONTROL

390S0141BSG

Figure 4-2 Dump V alve Control

15 . Cutting Height Adjustment (Figure 4-1). Used

to set the cutter deck at the desired cutting height.

16. Deck Release Lever (Figure 4-1). Used to lock the cutter deck in the transport position. Push the foot pedal forward and lift up on the release lever to release the cutter deck for normal mowing.

10 . Right Steering Control (Figure 4-1). Used to

control the mower's right wheel when traveling forward or reverse.

11. Parking Brake Control (Figure 4-1). Used to engage and disengage the parking brakes. Pull the lever back to engage the parking brakes. Push the lever forward to disengage the parking brakes.

12 . Fuel Tank Gauge (Figure 4-1). Indicates the

amount of fuel in the fuel tank.

13. Dump Valve Control Levers (Figure 4-2).

Located on the hydraulic pumps, used to freewheel the mower. Rotating the levers clockwise until they stop allows the unit to move under hydraulic power. The levers must be in this position during operation of the mower. Rotating the levers counter-clockwise allows the mower to be moved by hand (free-wheeling).

14. Deck Lift Foot Lever (Figure 4-1). Used to raise and lower the cutter deck.

17 . Temperature Gauge (Figure 4-1). Indicates the

operating temperature of the engine.

4.2 SAFETY INTERLOCK SYSTEM

The mower is equipped with a safety interlock system that prevents the engine from starting unless the deck drive is disengaged, the parking brake is engaged, the steering control levers are in the neutral position and the operator is in the seat. The interlock system shuts off the engine if the operator leaves the seat with the steering control levers not in the neutral position and/or the cutter blades engaged and the parking brake not engaged.

WARNING:

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

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 7.4.)

3. Check hydraulic oil level in reservoir. (See Section

7.3.)

4. Check for loose hardware. Tighten as needed.

5. Check interlock system for proper operation. (See

Section 4.2.)

6. Check tire pressure. Adjust pressure if necessary.

(See Section 7.10)

4.4 STARTING THE ENGINE

7. Turn the ignition key to the 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 prevent overheating of the starter motor. Prolonged cranking can damage the starter motor and shorten battery life.

8. Allow engine to warm before operating the mower.

4.5 GROUND TRAVEL AND STEERING

-IMPORTANT-

If you are not familiar with the operation of a machine with lever steering and/or hydrostatic transmissions, the steering and ground speed operations should be learned and practiced in an open area, away from buildings, fences, or obstructions. Practice until you are comfortable with the handling of the machine before attempting to mow. Learn the operation on flat ground before operating on slopes.

CAUTION:

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

1. Be sure the fuel shutoff valve, located behind the operator's seat, is completely open. (See section 7.5.)

2. Sit in the operators seat and place the steering control levers in the neutral position.

3. Engage the parking brake.

4. Place the PTO switch in the disengaged position.

5. If the engine is cold, choke the engine as needed.

6. Move the engine throttle control to about half engine speed.

-IMPORTANT-

Start practicing with a slow engine speed and slow forward travel.

Learn to feather the steering controls to obtain a smooth operating action.

Practice operating the mower until you are comfortable with the controls before proceeding to mow.

Forward Travel

To travel forward with the mower, disengage the parking brake and slowly push the steering control levers forward an equal distance. The further the steering control levers are pushed forward the greater the forward speed will be. To increase the speed, push the steering control levers further forward and to decrease the speed, pull the steering control levers back.

To stop the forward travel, pull the steering control levers back to the neutral position.

Section 4

To 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.

To steer the mower right while traveling forward, pull the right steering control lever back. The further the lever is pulled back, the 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.

-IMPORTANT-

Do not travel forward over a curb. The mower will hang up on the curb. Raise the deck and travel backwards over the curb at a 45 degree angle. (see section 4.13 for cutter deck raising instructions)

Reverse Travel

To steer left while traveling in reverse, allow the left steering control lever to move forward. The further the control is allowed to move forward, the quicker the mower will turn left.

To steer right while traveling in reverse, allow the right steering control lever to move forward. The further the control is allowed to move forward, the quicker the mower will turn right.

To stop the reverse travel, allow the steering control levers to return to the neutral position. If the mower is to be parked, engage the parking brake.

4.6 ENGAGING THE DECK DRIVE (CUTTER BLADES)

1. Set the throttle at about 3/4 speed. Do not attempt to engage the deck drive at high speed as this shortens the electric clutch life  use only moderate engine speed when engaging the deck drive.

CAUTION:

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

CAUTION:

Before backing up, observe the rear for persons and obstructions. Clear the area before backing up. Possible injury or property damage could occur.

To travel in reverse, pull both handles back. Keep the travel speed low while traveling in reverse.

-NOTE-

The mower may not travel straight in reverse. Slight adjustments may need to be made using the steering controls.

2. Engage the deck drive by pulling out on the yellow switch, located on the instrument panel, (Figure 4-3) to the engage position.

PULL UP TO ENGAGE

PUSH DOWN TO DISENGAGE

STT99CES

Figure 4-3 Cutter Engage Switch

-NOTE-

A squealing noise may be heard when engaging or disengaging the deck drive. It is caused by the electric clutch plates meshing as the mower comes up to speed.

3. To disengage the deck drive, push the switch in to the disengage position.

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 OPERATION

WARNING:

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 reduces traction and steering control.

4.9 AFTER OPERATION

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

-IMPORTANT-

Do not wash a hot or running engine. Cold water will damage the engine. Use compressed air to clean the engine if it is hot.

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

3. Check the drive belts for proper alignment and any signs of wear. Correct and adjust if necessary.

T o avoid injury from burns, allow the mower to cool before removing the fuel tank cap and refueling.

2. To prevent tipping or loss of control, start and stop smoothly, avoid unnecessary turns and travel at reduced speed.

3. Keep tires properly inflated.

4.8 P ARKING THE MOWER

1. Place the steering control levers in the neutral position.

2. Disengage the cutter blades

3. Slow the engine to idle speed.

4. Engage the parking brake.

5. Turn the ignition key to the OFF position and remove the key.

4. After the mower has cooled down, fill the fuel tank with fresh, clean fuel at the end of every day of operation.

5. Check the tire pressure. Adjust pressure if necessary.

Section 4

4.10 REMOVING CLOGGED MA TERIAL

ROTATING BLADES

NEVER PUT YOUR HANDS INTO THE 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 clogged, shut off the engine and remove the ignition key. Using a stick or similar item, dislodge the clogged material. Then resume normal mowing.

4.11 MOVING MOWER WITH ENGINE

STOPPED

To free-wheel or move the mower around without the engine running, place the dump valve levers in the FREEWHEEL position (Figure 4-2). Disengage the parking brake and move the mower by hand. The dump valve levers must be returned to the DRIVE position to drive the mower.

5. 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 height.

6. Use a slow travel speed for trimming purposes.

7. Operate the engine at full throttle for best cutting. Mowing with a lower RPM causes the mower to tear the grass. The engine is designed to be operated at full speed.

8. Use the alternate stripe pattern for best lawn appearance. Vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass.

DUMP VALVE

CONTROL

4.12 RECOMMENDA TIONS FOR MOWING

1. Do not mow with dull blades. A dull blade will tear grass, resulting in poor lawn appearance, and require extra power.

2. The discharge chute must not be removed and must be kept in the lowest position to deflect grass clippings and thrown objects downward. Direct the side discharge away from sidewalks or streets to minimize cleanup of clippings. When mowing close to obstacles, direct the discharge away from the obstacles to reduce the chance of property damage by thrown objects.

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

4. Keep mower and discharge chute clean.

390S0141BSG

Figure 4-2 Dump V alve Control

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