Scag STC52V-27CV-SS User Manual

OPERATOR’S

MANUAL

Tiger Cat

Models: STC48V-19KAI

STC48V-23CV

STC48V-25CV

STC48V-26BS

STC52V-25CV

STC52V-27CV

STC52V-27CV-SS

STC61V-25CV

STC61V-27CV

Congratulations on owning a Scag mower! This manual contains the operating instructions and safety information for your Scag mower. Reading this manual can provide you with assistance in maintenance and adjustment procedures to keep your mower performing to maximum efficiency. The specific models that this book covers are listed on the inside cover. Before operating your machine, please read all the information enclosed.

© 2009	PART NO. 03250 Rev.4
Scag Power Equipment	PRINTED 9/2009
Division of Metalcraft of Mayville, Inc.	PRINTED IN USA

WARNING

FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT

IN SERIOUS INJURY OR DEATH.

•Read this manual completely as well as other manuals that came with your mower.

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

•Under no circumstances should the machine be operated on slopes greater than 15 degrees. ALWAYS FOLLOW OSHA APPROVED OPERATION.

•DO NOT mow on wet grass. Wet grass reduces traction and steering control.

•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.

•Keep others off the mower (only one person at a time)

REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR!

Hazard control and accident prevention are dependent upon the awareness, concern, 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:

STC48V-19KAI	with a serial number of	E4600001 to E4699999
STC48V-23CV	with a serial number of	E4700001 to E4799999
STC48V-25CV	with a serial Number of	E9000001 to E9099999
STC48V-26BS	with a serial number of	E4800001 to E4899999
STC52V-25CV	with a serial number of	E4900001 to E4999999
STC52V-27CV	with a serial number of	E6200001 to E6299999
STC52V-27CV-SS	with a serial number of	E8900001 to E8999999
STC61V-25CV	with a serial number of	E5000001 to E5099999
STC61V-27CV	with a serial number of	E6300001 to E6399999

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

Table of Contents

R

Table of Contents
SECTION 1 - GENERAL INFORMATION...................................................................................	1
1.1 Introduction...........................................................................................................................................	1
1.2 Direction Reference............................................................................................................................	1
1.3 Servicing The Engine and Drive Train Components.................................................................	1
1.4 Symbols.....................................................................................................................................................	2
SECTION 2 - SAFETY INFORMATION.......................................................................................	3
2.1 Introduction...........................................................................................................................................	3
2.2 Signal Words...........................................................................................................................................	3
2.3 Before Operation considerations................................................................................................	3
2.4 Operation Considerations................................................................................................................	4
2.5 Roll-over protection system..........................................................................................................	6
2.6 Maintenance Considerations & storage.....................................................................................	8
2.7 Using a spark arrestor.....................................................................................................................	8
2.8 SAFETY AND INSTRUCTIONAL DECALS..................................................................................................	9
SECTION 3 - SPECIFICATIONS...............................................................................................	10
3.1 ENGINE.......................................................................................................................................................	10
3.2 Electrical..............................................................................................................................................	10
3.3 Tractor....................................................................................................................................................	10
3.4 Cutter Deck...........................................................................................................................................	11
3.5 Hydraulic System................................................................................................................................	11
3.6 Weights and Dimensions....................................................................................................................	11
3.7 PRODUCTIVITY..........................................................................................................................................	11
SECTION 4 - OPERATING INSTRUCTIONS............................................................................	12
4.1 CONTROLS AND INSTRUMENT IDENTIFICATION .................................................................................	12
4.2 SAFETY INTERLOCK SYSTEM.................................................................................................................	13
4.3 INITIAL RUN-IN PROCEDURES................................................................................................................	13
4.4 STARTING THE ENGINE............................................................................................................................	14
4.5 GROUND TRAVEL AND STEERING..........................................................................................................	14
4.6 ENGAGING THE DECK DRIVE (CUTTER BLADES)................................................................................	15
4.7 HILLSIDE OPERATION..............................................................................................................................	16
4.8 PARKING THE MOWER..............................................................................................................................	16
4.9 AFTER OPERATION...................................................................................................................................	16
4.10 REMOVING CLOGGED MATERIAL.........................................................................................................	16
4.11 MOVING MOWER WITH ENGINE STOPPED...........................................................................................	17
4.12 RECOMMENDATIONS FOR MOWING.....................................................................................................	17
4.13 ADJUSTING CUTTING HEIGHT..............................................................................................................	17
4.14 Towing (optional hitch accessory)...........................................................................................	18
SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS................................................	19
I

R

Table of Contents

SECTION 6 - ADJUSTMENTS..................................................................................................	22
6.1 PARKING BRAKE ADJUSTMENT.............................................................................................................	22
6.2 TRAVEL ADJUSTMENTS...........................................................................................................................	22
6.3 Throttle Control and Choke Adjustments.............................................................................	24
6.4 BELT ADJUSTMENT..................................................................................................................................	24
6.5 BELT ALIGNMENT.....................................................................................................................................	24
6.6 CUTTER DECK ADJUSTMENTS...............................................................................................................	24
6.7 Custom-Cut Baffle Adjustment....................................................................................................	26
6.8 electric clutch adjustment.........................................................................................................	27
SECTION 7 - MAINTENANCE..................................................................................................	28
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS.......................................................	28
7.2 Lubrication............................................................................................................................................	29
7.3 Hydraulic System................................................................................................................................	31
7.4 Engine Oil...............................................................................................................................................	32
7.5 Engine Fuel System.............................................................................................................................	32
7.6 Engine Air Cleaner.............................................................................................................................	33
7.7 Battery....................................................................................................................................................	34
7.8 DRIVE BELTS.............................................................................................................................................	35
7.9 CUTTER BLADES......................................................................................................................................	35
7.10 TIRES........................................................................................................................................................	36
7.11 BODY, DECK, AND UPHOLSTERY..........................................................................................................	36
SECTION 8 - ILLUSTRATED PARTS LIST...............................................................................	37
8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES......................................................................	37
48V & 52V CUTTER DECKS............................................................................................................................	38
61V CUTTER DECK..........................................................................................................................................	40
CUTTER DECK CONTROLS............................................................................................................................	42
SHEET METAL COMPONENTS.......................................................................................................................	44
STC FOLDABLE ROLL-OVER PROTECTION SYSTEM.................................................................................	46
STC SUSPENSION SEAT.................................................................................................................................	48
NOTES..............................................................................................................................................................	49
DRIVE SYSTEM COMPONENTS.....................................................................................................................	50
ENGINE & ATTACHING PARTS.......................................................................................................................	52
STEERING COMPONENTS..............................................................................................................................	54
BRAKE COMPONENTS...................................................................................................................................	56
WHEEL MOTOR PART NUMBER IDENTIFICATION.......................................................................................	58
NOTES..............................................................................................................................................................	59
FUEL AND HYDRAULIC SYSTEM...................................................................................................................	60
ELECTRICAL SYSTEM....................................................................................................................................	62
BDP-10A HYDRAULIC PUMP ASSEMBLY.....................................................................................................	64
REPLACEMENT DECALS AND INFORMATION PLATES..............................................................................	66
ELECTRICAL SCHEMATIC..............................................................................................................................	68
LIMITED WARRANTY - COMMERCIAL EQUIPMENT..........................	Following Section 8
II

Section 1

R

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.

THE REPLACEMENT OF ANY PART ONTHIS PRODUCT BY OTHERTHANTHE MANUFACTURER'S AUTHORIZED REPLACEMENT PART MAY ADVERSELY AFFECTTHE PERFORMANCE, DURABILITY OR SAFETY OF THIS PRODUCT.

USE OF OTHERTHAN ORIGINAL SCAG REPLACEMENT PARTS WILL VOID THE WARRANTY.

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

SERIAL NUMBER

PLATE LOCATION

S C A G

Power Equipment

Model

Serial

STC 2001 SPL-1

Figure 1-1. Mower Serial Number Plate Location

USE ONLY SCAG APPROVED ATTACHMENTS AND ACCESSORIES.

Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine. See Section 8, Paragraph 8-1.

WARNING

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

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.

1

R

Section 1

1.4 Symbols
SYMBOL	DESCRIPTION	SYMBOL	DESCRIPTION
	Choke		Transmission
	Parking Brake		Spinning Blade
		48071S
	On/Start		Spring Tension on Idler
	Off/Stop		Oil
	Falling Hazard		Thrown Object Hazard
	Fast		Slow
	Continuously Variable - Linear		Cutting Element - Basic Symbol
	Pinch Point		Cutting Element - Engage
481039S
	Hour meter/Elapsed Operating Hours		Cutting Element - Disengage
	STT Models		CE Mark

Seat must be installed under the seat hold down bracket during installation. Failure to secure the seat under the hold down bracket could result in serious injury or death in a roll over.

								Thrown Object Hazard		Read Operator's Manual
								Keep Bystanders Away

2

Section 2

R

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 of the controls before operating the mower. The owner/user can prevent and is responsible for accidents or injuries occurring to themselves, other people or property.

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 or contact us via the Internet at www.scag.com. The manual for this machine can be downloaded by using the model and serial number or use the contact form to make your request. Please indicate the complete model and serial number of your Scag product when requesting replacement manuals.

2.2 Signal Words

Danger

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.

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.

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.

Signal Word:

It 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.

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. Keep children out of the mowing area and in the watchful care of a responsible adult other than the operator. Be alert and turn machine off if a child enters the area.

3.DO NOT allow children to ride or play on the machine, it is not a toy.

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

5.DO NOT carry passengers.

6.DO NOT operate the machine under the influence of alcohol or drugs.

3

R

Section 2

7.If the operator(s) or mechanic(s) cannot read English or Spanish, it is the owner's responsibility to explain this material to them.

8.DO NOT wear loose fitting clothing. Loose clothing, jewelry or long hair 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.

WARNING

Always wear hearing protection. Operating this machine over prolonged periods of time can cause loss of hearing.

9.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 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 position and the parking brake is not engaged. Never operate equipment with the interlock system disconnected or malfunctioning.

10.Be sure the interlock switches are functioning correctly.

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

12.DO NOT add fuel to a running or hot engine. Allow the engine to cool for several minutes before adding fuel. Never fuel indoors or inside enclosed trailers.

13.Keep flammable objects (cigarettes, matches, etc.), open flames and sparks away from the fuel tank and fuel container. Use only approved containers.

14.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.

15.Do not operate without the side discharge chute installed and in the down position or with an optional grass catcher or mulch plate completely installed.

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

17.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.

WARNING

DO NOT operate on steep slopes.To 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. Under no circumstances should the machine be operated on slopes greater than 15 degrees. ALWAYS FOLLOW OSHA APPROVED OPERATION.

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.

4

Section 2

R

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.

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.

Caution

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.

WARNING

DO NOT use your hand to dislodge the clogged discharge chute. Use a stick or other device to remove clogged material after the engine has stopped running and the blades have stopped turning.

7.Be alert for holes, rocks, roots and other hidden hazards in the terrain. Keep away from any dropoffs. 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 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. If you must mow in reverse, maintain a constant lookout to the rear of the machine and mow slowly.

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

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

11.Mow only in daylight or good artificial light.

12.NEVER raise the deck with the blades engaged.

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.

DANGER

DO NOT run the engine inside a building or a confined area without proper ventilation. Exhaust fumes are hazardous and contain carbon monoxide which can cause brain injury and death.

16.Keep hands and feet away from cutter blades and moving parts. Contact can injure.

17.Transport the mower using a heavy duty trailer or truck. Insure the trailer or truck has all of the necessary lighting and markings as required by

laws, codes, and ordinances. Secure a trailer with a safety chain.

18.Be cautious when loading and unloading onto trailers or trucks. Use only a full width ramp. Ramp angle should be no more than 15 degrees. Back up the ramp and drive down forward.

19.When transporting the mower, make sure the park brake is engaged, the steering control levers are in the neutral position, the engine is off with the key removed, and the wheels have been blocked.

20.Tie the mower down securely using straps, chains, cable, or ropes. Both front and rear straps must be directed down and outward from machine.

21.Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.

22.NEVER leave the machine running unattended.

5

R

Section 2

2.5 Roll-over protection system

WARNING

Keep the roll bar in the raised and locked position and the seat belt securely fastened during operation. Failure to do so could cause serious injury or loss of life.

This 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. Do not mow on wet grass. Wet grass reduces traction and steering control.

Any or all parts of the Roll-Over Protection System MUST NOT be removed. Failure to adhere to this guideline could result in injury or death.

WARNING

There is no roll-over protection when the roll bar is in the down position.

Lower the roll bar only when absolutely necessary.

Raise the roll bar as soon as clearance permits.

DO NOT wear the seat belt when the roll bar is in the down position.

ALWAYS wear seat belt when roll bar is in the up position.

Operate the machine smoothly, no sudden turns, starts or stops.

Check the area carefully before mowing for proper overhead clearance (i.e. branches, doorways, etc.).

DO NOT contact any overhead object with the roll bar.

Lower the roll bar only when absolutely necessary.

1.To lower the roll bar, loosen the tension knob on both the left hand and right hand bar. See Figure 2-1.

2.Remove the hairpin cotter pins and remove the two

(2) lock pins. See Figure 2-2.

3.Lower the roll bar to the down position.

4.To raise the roll bar, lift the bar to the upright position.

5.Install the two (2) lock pins through the hole, secure with the two (2) hairpin cotter pins and tighten the tension knobs. See Figure 2-2. Remove the seat belt from the retainer brackets.

UPRIGHT AND

LOCKED POSITION

TENSION

KNOBS

Figure 2-1. Foldable Roll-Over Protection System

HAIR PIN

TENSION

KNOB

LOCK PIN

Figure 2-2. ROPS Hinge

The potential exposure of the seat belt to severe environmental conditions make it crucial to inspect the seat belt system regularly.

6

Section 2

R

It is recommended that the seat belt be inspected on a daily basis for signs of damage. Any seat belt system that shows cuts, fraying, extreme or unusual wear, significant discoloration due to UV exposure, dirt or stiffness, abrasion to the seat belt webbing, or damage to the buckle, latch plate, hardware or any other obvious problem should be replaced immediately.

WARNING

Failure to properly inspect and maintain the seat belt can cause serious injury or loss of life.

1.Check the full length of the seat belt webbing for cuts, wear, fraying, dirt and stiffness. See Figure 2-3.

2.Check the seat belt webbing in areas exposed to ultra violet rays from the sun or extreme dust or dirt. If the original color of the webbing in these areas is extremely faded and/or is packed with dirt, the physical strength of this webbing may have deteriorated. If this condition exists, replace the seat belt system.

3.Check the buckle and latch for proper operation and determine if the latch plate is excessively worn, deformed, or if the buckle is damaged or cracked. See Figure 2-3.

INSPECT BUCKLE & LATCH

INSPECT WEBBING

Figure 2-3. Seat Belt Inspection

WARNING

Reduce speed when turning, operating on slopes, slick or wet surfaces. Allow extra distance to stop.

Stay off of slopes too steep for safe operation. To check a slope, attempt to back up it (with the cutter deck down). If the machine can not back up the slope without the wheels slipping, do not operate the machine on this slope. Under no circumstances should the machine be operated on slopes greater than 15 degrees.

DO NOT mow near drop-offs, ditches or embankments. The machine could suddenly roll over if a wheel goes over the edge or if the edge caves in.

Operate the machine smoothly, no sudden turns, starts or stops on a slope.

NEVER tow on slopes. The weight of the towed equipment may cause loss of traction and loss of control.

DO NOT permit untrained personnel to operate the machine.

Be cautious when loading and unloading onto trailers or trucks.

Use only a full width ramp.

Ramp angle should be no more than 15 Degrees.

Back up the ramp and drive down forward.

7

R

Section 2

2.6 Maintenance Considerations & storage

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.Disengage drives, lower implement, set parking brake, stop engine and remove key or disconnect spark plug wire to prevent accidental starting of the engine when servicing or adjusting the machine. Wait for all movement to stop before adjusting, cleaning or repairing.

3.Disconnect battery or remove spark plug wire before making any repairs. Disconnect the negative terminal first and the positive last. Reconnect the positive first and the negative last.

4.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.

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

6.To reduce fire hazard, keep the cutting units, drives, muffler and engine free of grass, leaves, excessive grease, oil and dirt.

7.Park the machine on level ground and engage the parking brake.

8.NEVER allow untrained personnel to service the machine.

9.Use care when checking blades. Use a Blade Buddy, wrap the blade(s) or wear gloves and USE CAUTION when servicing blades. Only replace blades. NEVER straighten or weld blades.

10.Keep all parts in good working condition. Replace all worn or damaged decals.

11.Use jack stands to support components when required.

12.Carefully release pressure from components with stored energy.

WARNING

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. If hydraulic fluid is injected into the skin, it must be surgically removed within a few hours by a doctor or gangrene may result.

13.Let the engine cool before storing.

14.DO NOT store the machine near an open flame.

15.Shut off fuel while storing or transporting.

16.DO NOT store fuel near flames or drain indoors.

17.Charge batteries in an open, well ventilated area, away from spark and flames. Unplug charger before connecting or disconnecting from battery. Wear protective clothing and use insulated tools.

2.7 Using a spark arrestor

The engine in this machine is not equipped with a spark arrestor muffler. It is in violation of California Public Resource Code Section 4442 to use or operate this engine on or near any forest covered, brush covered or grass covered land unless the exhaust system is equipped with a spark arrestor meeting any applicable local or state laws. Other states or federal areas may have similar laws. Check with your state or local authorities for regulations pertaining to these requirements.

8

Section 2

R

2.8 SAFETY AND INSTRUCTIONAL DECALS

!CAUTION

Avoid injury from burns. Shut off engine before removing fuel tank cap.

483397

START/DRIVEPROCEDURE

WARNING

INSTALL BELT COvER BEFORE

OPERATING MACHINE

READ OPERATOR'S MANUAL

483402

FORWARD R

483407

F REvERSE

481568

WARNING

	Operation of this equipment
	may create sparks that can
	start res around dry
	vegetation. A spark
	arrestor may be required.			483633
	The operator should contact
	local re agencies for laws			CAUTION
	re prevention	483900
483406	or regulations relating to		!
		requirements.
		483900		Avoid injury from burns.
				Shut off engine before
(supplied with California models only)				removing fuel tank cap.

Molded in Fuel Tank

483425

! W ARNING

AVOID SERIOUSINJURY OR DEATH

483444

483444		482709
	483300	2009 STC &STWC Safety Decals

9

R

Section 3

		SPECIFICATIONS
3.1 ENGINE
General Type.................................................................................................			Heavy Duty Industrial/Commercial Gasoline
Brand...........................................................................................................................			Briggs & Statton, Kohler, Kawasaki
Horsepower:
(Scag Model STC48V-19KAI).....................................................................................			19 HP (Spec.#FH580V-AS37R)
(Scag Model STC48V-23CV)..............................................................................................			23 HP (Spec.# PS-75607)
(Scag Model STC48V-25CV, STC52V-25CV, STC61V-25CV).........................................			25 HP (Spec# CV730-3112)
(Scag Model STC48V-26BS)......................................................................................			26 HP (Spec.# 44P7770115E1)
(Scag Model STC52V-27CV, STC52V-27CV-SS, STC61V-27CV)...................................			27 HP (Spec# CV740-3110)
Type...........................................................................................................			4 Cycle Gasoline, Twin Cylinder, Vertical Shaft
Cylinders.....................................................................................................................................			2 with Cast Iron Sleeves
Governor........................................................................		Mechanical Type with Variable Speed Control Set At 3600 RPM
Idle Speed:
Briggs & Stratton..........................................................................................................................................			1750 RPM
Kohler...........................................................................................................................................................			1900 RPM
Kawasaki......................................................................................................................................................			1550 RPM
Fuel Pump.......................................................................................................			Integral Fuel Pump with In-Line Fuel Filter
Fuel......................................................................................		Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump........................................................................................................................			Positive Displacement Gerotor™
Starter:
Briggs & Stratton..........................................................................................			Electric Starting with Bendix Shift Starter
Kohler / Kawasaki.....................................................................................			Electric Starting with Solenoid Shift Starter
Belts.................................................................................................................			Kevlar cord. Self-adjusting, Self-tightening
3.2 Electrical
Battery.....................................................................................................................................................................			12 Volt
Charging System................................................................................................................................................			Alternator
Charging Output:
Briggs & Stratton..................................................................................................................................			12 Volt, 16 Amp
Kohler...................................................................................................................................................			12 Volt, 15 Amp
Kawasaki..............................................................................................................................................			12 Volt, 13 Amp
System Polarity.......................................................................................................................................			Negative Ground
Starter.................................................................................		12 Volt Electric Ring Gear Type, Key and Solenoid Operated
Interlock Switches.......................................................		Seat, Neutral Control, Mower Engagement (BBC), Parking Brake
Instrument Panel.............................................................................................			Key Switch, Throttle Lever, Manual Choke,
			PTO Switch, Fuses and Safety Start Module
Fuses........................................................................................................................................................			Two (2) 20 Amp
3.3 Tractor
Drive System................	Hydraulic Drive with Two Variable Displacement Pumps and Two Cast-iron High-Torque Motors
Hydrostatic Pumps....	Two Hydro-Gear™ 10 cc/rev. Pumps with Dump Valves for movement without running the engine
Drive Wheel Motors..............................................................		Two Hydro-Gear™ or Parker Cast-Iron High-Torque Motors
Steering/Travel Control............................................................................................			Twin Lever Fingertip Steering Control
		with Individual Control to Each Wheel with Gas Spring Dampers
Parking Brake....................................................................		Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster (48"-52" Deck)....................................................			13 X 5-6 Four-Ply w/Tapered Roller Bearing Pivots
(2) Front Caster Wheel (61" Deck).............................................		13 x 6.5-6 Four-Ply w/Tapered Roller Bearing Pivots
(2) Drive - (48"-52" Deck)................................................		23 X 9.50 X 12 Four-Ply Pneumatic Tubeless, Radius Edge
(2) Drive - (61" Deck)..........................................................		24 x 12 x 12 Four-Ply Pneumatic Tubeless, Radius Edge
		10

Section 3

R

Tire Pressure:
Front Caster.......................................................................................................................................................	25 PSI
Drive...................................................................................................................................................................	12 PSI
Fuel Tanks.............................................	Dual 4-Gallon Seamless Polyethylene Tanks with Large Opening and Fuel Cap
Seat.....................................................................................................	Padded, Thick Cushion with Extra Spring Support
Travel Speed:
Forward.........................................................................................................................................................	0-10 MPH
Reverse...........................................................................................................................................................	0-5 MPH

-NOTE- The machine will travel at 10 mph for transport purposes. For best cutting performance the forward travel speed should be adjusted depending upon the cutting conditions.

3.4 Cutter Deck

Type..........................	Floating, Adjustable, Anti-Scalping, Hybrid Design Combines Out-Front and Belly-Mount Designs
Construction.............................................................................................................................		Tri-plate deck construction
	Top of deck consists of three steel plates totaling nearly 1/2" of steel,7-gauge (3/16") deck skirt.
True Cutting Width:
48V.........................................................................................................................................................		48" (122.0 cm)
52V.........................................................................................................................................................		52" (132.0 cm)
61V.......................................................................................................................................................		61" (154.94 cm)
Cutting Height Adjustment.........		Foot-Operated Lever Adjustment from Operator's Seat, 1.00" to 5.5" in 1/4"increments
Cutter Blades.............................................................................		0.197 in. Thick, Milled Edge, Wear Resistant Marbain™
Blade Engagement.............................................................		Electric Blade Engagement Clutch with Control Panel Switch
		Connected to the Cutter Deck through a Belt.
Discharge Opening....................		Extra Wide Discharge Opening with Spring-Loaded Discharge Chute and Turbo Baffle
Discharge Chute...................................................................................................		Black, Polypropylene (Plastic), Flexible
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.............................................................................................		Split Steel with Easily Removed Taper Hubs
Cutter Deck Belts......................................		B-section and Cogged Type with Kevlar Cord. Self-Adjusting, Self-Tightening
Electric Clutch Type.................................................................................................		Ogura Heavy Duty PTO Clutch Brake

3.5 Hydraulic System

Hydraulic Oil Filter..........................................................................................................	10 Micron Spin-on Element Type
Hydraulic Reservoir................................................................................................................	Nylon; 2-1/2 Quart Capacity

3.6 Weights and Dimensions	48V	52V	61V
Length.........................................................................................	80".................................	80".....................................	80"
Tracking Width............................................................................	46.5"..............................	46.5".................................	46.5"
Overall Width w/chute down.......................................................	60.5"..............................	64.5.................................	73.5"
Overall Width w/chute up............................................................	49".................................	53".....................................	62"
Overall Height w/ROPS (up on Folding Models).........................	66".................................	66".....................................	66"
Overall Height w/ROPS down (Folding Models)..........................	54".................................	54".....................................	54"
Operating Weight w/ROPS........................................................	1050#.............................	1100#..............................	1150#

3.7 PRODUCTIVITY	48V	52V	61V
Cutting Width...............................................................................	48".................................	52".....................................	61"
Acres Per Day.............................................................................	18.6...............................	20.2..................................	23.7

The preceding 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 6 MPH with a 20% allowance for overlap and turns.

11

R

Section 4

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.

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.

5.Hourmeter (Figure 4-1). Indicates the number of hours the engine has been operated. It operates whenever the ignition key switch is in the ON position. Has preset maintenance reminders for engine and hydraulic system oil changes. Will start flashing scheduled maintenance 2 hours before preset time and continue flashing until 2 hours after. Automatically resets.

LEFT STEERING

CONTROL

					PARKING
					BRAKE
ENGINE THROTTLE CONTROL
MOWER
DECK	PUSHIN TO	DISENGAGE	PULLOUT TOENGAGE	FAST
SWITCH
	MOWER DECK	START		EqUIPMENTPOWER
IGNITION	ON
SWITCH
	OFF			CHOKE	FUSES
ENGINE
CHOKE

CONTROL

FUEL SWITCHING

VALVE

DECK LIFT

CUTTING HEIGHT

ADJUSTMENT

	RIGHT STEERING
	CONTROL
DUMP
VALVE	CUTTER DECK
	RELEASE LEVER
	SEAT BELT
	HOUR METER

SEAT HOLD DOWN

RELEASE LATCH

STC 2007 CAI

Figure 4-1. Controls and Instruments

12

Section 4

R

6.Fuse Holders (Figure 4-1). Two 20-amp fuses protect the mower’s electrical system. To replace fuses, pull fuse out of the socket and install a new fuse.

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

8.Right Steering Control (Figure 4-1). Used to control the mower's right wheel when traveling forward or reverse.

9.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.

10.Fuel Switching Valve (Figure 4-1). Located on the left side of the machine. Used to shut off fuel supply to the engine and change fuel supply between the fuel tanks. Rotate the valve counter clockwise to supply fuel from the tank on the left side only. Rotate the valve clockwise to supply fuel from the tank on the right side only.

11.Dump Valve Control Levers (Figure 4-2). Located on the hydraulic pumps, used to “free-wheel” the mower. Rotating the levers clockwise until they stop allows the unit to move under hydraulic power. The levers must be in this position and torqued to 10ft/lbs during operation of the mower. Rotating the levers counter-clockwise allows the mower to be moved by hand (free-wheeling).

DUMP VALVE

CONTROL LEVERS

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

15.Seat Belt (Figure 4-1). Used to secure the operator. Seat belt must be worn at all times when the ROPS is in the upright and locked position.

16.Seat Hold Down Release Latch (Figure 4-1).

Located behind the seat. Used to secure the seat in the operator's position. Release the latch to gain access under the seat.

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.

STC 2001 DVC

Figure 4-2. Dump Valve Control

12.Deck Lift Foot Lever (Figure 4-1). Used to raise and lower the cutter deck. Push full forward to lock in the transport position.

13.Cutting Height Adjustment (Figure 4-1). Used to set the cutter deck at the desired cutting height.

4.3 INITIAL RUN-IN PROCEDURES

First Day of Use or Approximately 20 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 20 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.)

13

R

Section 4

4.4 STARTING THE ENGINE

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.Secure the ROPS in the upright and locked position.

3.Sit in the operator’s seat, fasten seat belt and place the steering control levers in the neutral position.

4.Engage the parking brake.

5.Place the PTO switch in the disengaged position.

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

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

8.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.

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, pull levers inward out of the neutral lock position 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.

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.

9. 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.

Learn the operation on flat ground before operating on slopes.

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

14

- 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 Figure 4-1 items 12-14 for cutter deck raising description.)

Section 4

R

Reverse Travel

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.

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.

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

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 levers inward out of the neutral lock position and 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.

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, place the handles in the neutral lock position and engage the parking brake.

PULL UP TO ENGAGE

PUSH DOWN TO DISENGAGE

390S0138

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. This is normal.

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

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.

15

R

Section 4

4.7 HILLSIDE OPERATION

WARNING

DO NOT operate on steep slopes.To 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. Under no circumstances should the machine be operated on slopes greater than 15 degrees. ALWAYS FOLLOW OSHA APPROVED OPERATION.

1.This 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. The Roll-Over Protection System is standard equipment for this machine. See Section 2.5, page 6 of this manual for further details.

2.To prevent tipping or loss of control, do not start or stop suddenly, avoid unnecessary turns and travel at reduced speed. If tires loose traction, disengage blades and proceed slowly off the slope.

3.Avoid sudden starts when mowing uphill. Sudden starts may cause the machine to tip backwards.

4.Loss of traction may occur when traveling down hill. Weight transfers to the front of the machine and may cause the drive wheels to slip causing loss of braking or steering.

5.Keep tires properly inflated.

4.8 PARKING THE MOWER

1.Park the machine on a flat, level surface only. Do not park the machine on an incline.

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

3.Disengage the cutter blades.

4.Slow the engine to idle speed.

5.Engage the parking brake.

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

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.

Danger

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

4.After the mower has cooled down, fill the fuel tank with fresh, clean fuel at the end of every day of operation. See Engine Owner's Manual for proper octane requirements.

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

4.10 REMOVING CLOGGED MATERIAL

Danger

ROTATING BLADES

NEVER PUTYOUR HANDS INTOTHE DISCHARGE CHUTE FOR ANY REASON!

Shut off the engine and remove the key and only then use a stick or similar object to remove material if clogging has occurred.

1.If the discharge chute becomes clogged, shut off the engine and remove the ignition key. Using a stick or similar item, dislodge the clogged material. Then resume normal mowing.

16

Section 4

R

4.11 MOVING MOWER WITH ENGINE STOPPED

To “free-wheel” or move the mower around without the engine running, rotate the dump valve levers counterclockwise. See Figure 4-4. Disengage the parking brake and move the mower by hand. When the machine is in the desired position, engage the parking brake and rotate the levers clockwise until they stop.The dump valve levers must be returned to the DRIVE position and torqued to 10ft/lbs to drive the mower.

DUMP VALVE

CONTROL LEVERS

STC 2001 DVC

Figure 4-4. Dump Valve Control

4.12 RECOMMENDATIONS FOR MOWING

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

WARNING

DO NOT operate without Discharge Chute, Mulching Kit, or entire Grass Catcher properly installed.

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.

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.

4.13 ADJUSTING CUTTING HEIGHT

The mower deck can be adjusted from a height of 1-1/2 inches to 5-1/2 inches at 1/4-inch intervals. To adjust the cutting height:

WARNING

DO NOT adjust the cutting height with the mower blades rotating. Disengage the power to the cutter blades and then adjust 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. See Figure 4-5.

HEIGHT ADJUSTMENT

PEDAL

1/	4
1

						4	2
				3/
		1/		2	2
	1/	4	3
5G	4
HEIGHT
CUTTIN

LANYARD

PIN

STC 2006 ACH

Figure 4-5. Adjusting Cutting Height

17

R

Section 4

3.Insert the lanyard pin into the cutting height index at the desired cutting height. Push forward on the deck lift foot lever, hold in place and pull back on the deck release lever. See Figure 4-6. Slowly release the foot pedal. A deck height decal is located on the cutting height index as an aid in adjusting the deck to the desired height. See Figure 4-5.

STC 2006 DRL

DECK RELEASE LEVER

Figure 4-6. Deck Release Lever

4.14 Towing (optional hitch accessory)

1.NEVER allow children or others in or on towed equipment.

2.Tow only with a machine that has a hitch designed for towing. Do not attach towed equipment except at the hitch point.

3.Follow manufacturer's recommendations for weight limit for towed equipment. 250/lbs. maximum towing weight.

4.NEVER tow on slopes. The weight of the towed equipment may cause loss of traction and loss of control.

5.Travel slowly and allow extra distance to stop.

6.Zero-turning with a trailer attached could cause damage to the trailer or mower.

18

Section 5

R

TROUBLESHOOTING CUTTING CONDITIONS

	Condition	Cause	Cure
	Stringers - Occasional	Low engine RPM	Run engine at full RPM
	Blades of Uncut Grass
		Ground speed too fast	Slow speed to adjust for conditions
		Wet grass	Cut grass after it has dried out
		Dull blades, incorrect sharpening	Sharpen blades
		Deck plugged, grass accumulation	Clean underside of deck
	Width of Deck	Belts slipping	Adjust belt tension
	SGB020
	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 RPM
		Belt slipping	Adjust belt tension
		Deck plugged, grass accumulation	Clean underside of deck
		Ground speed too fast	Slow speed to adjust for conditions
	Width of Deck
	SGB018	Wet grass	Cut grass after it has dried out
		Bent blades	Replace blades
	Streaking - Strips of
	Uncut Grass Between
	Cutting Paths

Not enough overlapping between rows Increase the overlap of each pass

Width	Width
of	of
Deck	SGB019 Deck

19

R

Section 5

TROUBLESHOOTING CUTTING CONDITIONS (CONT'D)

Condition	Cause	Cure
U n e v e n C u t o n F l at	Lift worn from blade	Replace blade
Ground - Wavy High-Low
Appearance, Scalloped	Blade upside down	Mount with cutting edge toward ground
Cut, or Rough Contour
	Deck plugged, grass accumulation	Clean underside of deck
	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
Width of Deck
SGB020	Dull blade	Sharpen blade
Uneven Cut on Uneven
Ground-WavyAppearance,
High-Low Scalloped Cut,
or Rough Contour
		May need to reduce ground speed, raise
	Uneven ground	cutting height, and/or change direction
		of cut

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
	Deck not level side-to side	Check for level and correct
Width of Deck
SGB023

20

Section 5

TROUBLESHOOTING CUTTING CONDITIONS (CONT'D)

R

Condition	Cause	Cure
Scalping - Blades Hitting	Low tire pressures	Check and adjust pressures
Dirt or CuttingVery Close
to the Ground	Ground speed too fast	Slow speed to adjust for conditions
		May need to reduce ground speed, raise
	Cutting too low	cutting height, change direction of cut,
		and/or change pitch and level
		May need to reduce ground speed, raise
	Rough terrain	cutting height, and/or change direction
		of cut
Width of Deck	Ground speed too fast	Slow speed to adjust for conditions
SGB022
	Wet grass	Cut grass after it has dried out
Step Cut - Ridge in Center	Blades not mounted evenly	Adjust pitch and level
of Cutting path
	Bent blade	Replace blade
	Internal spindle failure	See your authorized SCAG dealer
	Mounting of spindle incorrect	See your authorized SCAG dealer
Width of Deck
SGB024
Slope Cut - Sloping Ridges	Bent spindle mounting area	See your authorized SCAG dealer
Across Width of Cutting
Path	Internal spindle failure	See your authorized SCAG dealer

Bent deck housing

See your authorized SCAG dealer

Width of Deck

SGB025

21

R

Section 6

ADJUSTMENTS

6.1 PARKING BRAKE ADJUSTMENT

WARNING

Do not operate the mower if the parking brake is not operable. Possible severe injury could result.

STC2002BA

LOOSEN
HERE	BRAKE
	HANDLE

The parking brake linkage should be adjusted whenever the parking brake lever is placed in the “ENGAGE” position and the parking brake will allow the mower to move. If the following procedures do not allow you to engage the parking brake properly, contact your Scag dealer for further brake adjustments.

1.Position a floor jack under the rear of the machine. Raise the machine and support it to prevent it from falling. Block the caster wheels to prevent the machine from moving. Remove the drive wheels.

2.With the brake in the engaged position, check the distance between the lower nut on the brake

actuator rod and the brake actuator lever on the LH side of the machine. The distance should be 1/8". See Figure 6-2.

3.If the distance is not at the specified measurement, loosen the jam nut at the clevis on the top of the brake actuator rod. See Figure 6-2.

4.Turn the bolt at the bottom of the brake actuator lever until the 1/8" measurement is achieved and tighten the jam nut at the clevis on the brake actuator rod. See Figure 6-2. If the 1/8" measurement can not

be achieved by adjusting the brake actuator rod, adjust the brake control rod. Adjust by loosening the jam nuts at both ends of the brake control rod and turning the rod until the proper distance is achieved. See Figure 6-1.

5.Repeat steps 2-4 on the RH side of the machine.

6.Replace the drive wheels and test the brake.

- NOTE -

If this procedure does not achieve proper brake adjustment, please contact your authorized Scag dealer.

Figure 6-1. Brake Adjustment

LOOSEN HERE

1/8"

390S0153-1

Figure 6-2. Brake Rod Adjustment

6.2 TRAVEL ADJUSTMENTS

Neutral or tracking adjustments will need to be made if:

A.The steering control levers are in the neutral position and the machine creeps forward or backward. (Neutral Adjustment, See Page 23).

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. (Tracking Adjustment, See Page 23).

22

Section 6

R

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.

2.With an operator in the seat, start the engine and disengage the parking brake.

3.Run the engine at full operating speed and check if the machine creeps forward or backwards.

4.Adjust the RH wheel by loosening the jam nuts on the steering control rod and turning the rod until the drive wheel turns in the forward direction. Turn the rod back until the drive wheel stops moving. Turn the rod an additional 1/2 turn. See Figure 6-3.

STC2002SCRA

	JAM	JAM
		NUTS
	NUTS
	ADJUST	ADJUST
	HERE	HERE
	RIGHT STEERING	LEFT STEERING
	CONTROL ROD	CONTROL ROD

Figure 6-3. Steering Control Rod Adjustment

5.Tighten the jam nuts and repeat for the LH wheel. See Figure 6-3.

6.Actuate the steering control levers forward and reverse several times and return them to the neutral position.

7.Check that the drive wheels remained in neutral and readjust if necessary.

8.Check that the steering control levers hit the stop before the pumps reach full stroke. Adjust as needed.

Tracking Adjustment

Caution

Stop the engine and remove the key from the ignition before making any adjustments. Wait for all moving parts to come to a complete stop before beginning work.

Caution

The engine and drive unit can get hot during operation causing burn injuries. Allow engine and drive components to cool before making any adjustments.

- NOTE -

Before proceeding with this adjustment, be sure that the caster wheels turn plus pivot freely and that the tire pressure in the drive wheels is correct. If the tire pressure is not correct, the machine will pull to the side with the lower pressure.

1.If at full speed the mower pulls right, it is an indication that the left wheel is turning faster than the right wheel. To adjust this condition, proceed as follows:

A. Stop the machine and place the steering control levers in the neutral position. Loosen the lock nuts securing the ball joints at each end of the LH steering control rod. Rotate the control rod to lengthen the rod and tighten the lock nuts. This will cause the control rod to stroke the LH pump less, slowing down the LH wheel. See Figure 6-3.

- NOTE -

If after making the adjustment as outlined in step 1A, the machine creeps forward or backward, perform the neutral adjustment. See Neutral Adjustment on page 23.

2.If at full speed the mower pulls left, it is an indication that the right wheel is turning faster than the left wheel. To adjust this condition, proceed as follows:

23

R

Section 6

A. Stop the machine and place the steering control levers in the neutral position. Loosen the lock nuts securing the ball joints at each end of the RH steering control rod. Rotate the control rod to lengthen the rod and tighten the lock nuts. This will cause the control rod to stroke the RH pump less, slowing down the RH wheel. See Figure 6-3.

- NOTE -

If after making the adjustment as outlined in step 2A, the machine creeps forward or backward, perform the neutral adjustment. See Neutral Adjustment on page 23.

6.3 Throttle Control and Choke

Adjustments

These adjustments must be performed by your Scag dealer to ensure proper and efficient running of the engine. Should either need adjustment, contact your authorized Scag service center.

6.4 BELT ADJUSTMENT

WARNING

Before removing any guards, shut the engine off and remove the ignition key.

All drive belts are spring loaded and self-tensioning, however after the first 2, 4, 8 and 10 hours of operation, the belts should be checked for proper alignment and wear. Thereafter, check the belts after every 40 hours of operation or weekly, whichever occurs first.

6.5 BELT ALIGNMENT

Belt alignment is important for proper performance of your Scag mower. If you experience frequent belt wear or breakage, see your authorized Scag service center for belt adjustment.

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.

- NOTE -

Before proceeding with the cutter deck adjustments, be sure that all tires are properly inflated.

Cutter Deck Level

The cutter deck should be level from side-to-side for proper cutting performance. To check for level, be sure that the mower is on a flat, level surface, the tires are properly inflated and the cutter deck is set at the most common cutting height that you will use. On the RH side of the machine, check the distance from the bottom of the cutter deck to the floor. Next check the distance from the bottom of the cutter deck to the floor on the LH side of the machine. Both measurements should be the same. If the two measurements are different, the cutter deck level must be adjusted as follows:

1.On the front LH side of the cutter deck locate the cutter deck level adjusting bracket. See Figure 6-4.

ADJUST

HERE

LOOSEN

HERE

Figure 6-4. Cutter Deck Level Adjustment

2.Loosen the two (2) elastic stop nuts. Adjust the bolt up or down on the adjustment bracket to adjust the cutter deck until the distance from the bottom of the cutter deck to the floor is the same as the measurement on the RH side of the machine.

3.Tighten the two (2) elastic stop nuts to secure the cutter deck in the proper position.

24

Section 6

R

Cutter Deck Pitch

Cutter Deck Height

The pitch of the cutter deck should be equal between the front and rear of the cutter deck for proper cutting performance. To check for proper deck pitch, be sure that the mower is on a flat, level surface and the tires are properly inflated.

Check the distance from the top of the cutter deck to the floor at the rear RH side of the cutter deck directly behind the cutter deck hanging chains. Next check the distance from the top of the cutter deck to the floor at the front RH side of the cutter deck directly in front of the cutter deck hanging chains.The measurement at the front of the cutter deck should be the same as the rear of the deck. Make these measurements at the LH side of the cutter deck also. If the measurement at the front of the deck is not the same, the cutter deck pitch must be adjusted as follows:

1.Loosen the jam nut on both adjusting rods. See Figure 6-5.

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.To check for proper deck height, be sure that the mower is on a flat, level surface and the tires are properly inflated.

1.Place the cutter deck in the transport position. Loosen the jam nuts on both ends of the deck height control rod. See Figure 6-6.

	1/4
LOOSEN	1
	1/23
	X
	1/2
HERE	2
	CUT
	1/4
	4
	TINGHEIGHT
	5

ADJUSTMENT

ROD

LOCK NUT

STC2006CDP

Figure 6-5. Cutter Deck Level Adjustment

2.Using an adjustable jaw pliers, turn the adjusting rods on the non-threaded portion of the rod until the deck is equal front to back on both the RH and the LH side of the cutter deck. Tighten both lock nuts.

- NOTE -

To prevent the cutter deck from teetering, all four

(4) cutter deck hanging chains must have tension on them. If all four chains do not have tension on them and the deck teeters, you must readjust the cutter deck as outlined in the procedures above. All measurements should be taken from the top edge of the deck as the Velocity Plus decks have an uneven bottom edge.

CONTROL ROD

STC 2006 CDHA

Figure 6-6. Cutter Deck Height Adjustment

2.Turn the control rod (See Figure 6-6) until there is a 1/4" space between the rear deck stop and the top of the cutter deck. See Figure 6-7. Tighten the jam nuts on the control rod.

DECK 1/4"

STOP

STC2006CDS

Figure 6-7. Cutter Deck Stop

25

R

Section 6

3.Check the cutter deck cutting height by placing the lanyard pin in the 3" position on the cutting height index. Release the deck from the transport position and allow the deck to move to the 3" cutting height position.

4.Check the measurement from the floor to the cutter blade tip. If the measurement is not at 3", an adjustment can be made using the deck height control rod. See Figure 6-6.

- NOTE -

If an adjustment had to be made, be sure that the cutter deck can easily be locked into the transport position.

6.7 Custom-Cut Baffle Adjustment

The Custom-Cut Baffle is designed to deliver optimum airflow and superior cutting performance in any type of grass. The Custom-Cut Baffle can be raised or lowered to precisely tailor the deck's performance for the type of grass being cut.The baffle can be set in seven (7) different positions for optimum performance.

A. 3-1/2" or 3-3/4" Position - (See Figure 6-9). For very tall, wiry or tough-to-cut grass.

1	2
3	4

A

B

B.4" (factory setting), 4-1/4" or 4-1/2" Position - (See Figure 6-9). For general purpose cutting.This gives the best mix of cutting performance in all types of grass.

C.4-3/4" or 5-1/4" Position - (See Figure 6-9). Placing the baffle in either the 4-3/4" or 5-1/4" setting will enhance fall cutting (leaf pickup) and reduce cutter deck "blowout".

To adjust the Custom-Cut Baffle height:

1.Place the cutter deck in the transport position.

2.Remove the hardware securing the Custom-Cut Baffle to the cutter deck.

- NOTE -

Hardware location used in the illustrations are for reference only. Location of hardware may vary depending on cutter deck size.

3.Move the Custom-Cut Baffle to desired position. See Figure 6-9.

4.Reinstall the mounting hardware. Torque hardware to 39 ft-lbs.

1 2 3 4

A

B

Custom-Cut Baffle Adjustment
Mounting Slot Selected		Mounting Hardware Location
Slot “A”	Hole 1	Hole 2	Hole 3	Hole 4
Height (inches)	3-3/4”	4-1/4”	4-3/4”	5-1/4”
Slot “B”		Hole 2	Hole 3	Hole 4
Height (inches)		3-1/2”	4”	4-1/2”

Figure 6-9. 7-Position Custom-Cut Baffle Adjustment

26