Scag SW36A-16KAI, SW48V-15KH, SW32-15KAI, SW48V-16KAI, SW52V-17KAI User Manual

OPERATOR’S

MANUAL

SW

Walk-Behind

Model: SW32-15KAI

SW36A-15KH

SW36A-16KAI

SW36A-17KAI

SW48V-15KH

SW48V-16KAI

SW52V-17KAI

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. 03224 Rev. 2
Scag Power Equipment	PRINTED 1/2009
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.

•ALWAYS FOLLOW OSHA APPROVED OPERATION.

•DO NOT operate on steep slopes.

•Always travel across slopes.

•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:

SW32-15KAI	with a serial number of	D5700001 to D5799999
SW36A-15KH	with a serial number of	D5800001 to D5899999
SW36A-16KAI	with a serial number of	D5900001 to D5999999
SW36A-17KAI	with a serial number of	E5900001 to E5999999
SW48V-15KH	with a serial number of	D6000001 to D6099999
SW48V-16KAI	with a serial number of	D6100001 to D6199999
SW52V-17KAI	with a serial number of	D6200001 to D6299999

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 Maintenance Considerations & storage.....................................................................................	5
2.6 Using a spark arrestor.....................................................................................................................	6
2.7 SAFETY AND INSTRUCTIONAL DECALS..................................................................................................	7
SECTION 3 - SPECIFICATIONS.................................................................................................	8
3.1 ENGINE.........................................................................................................................................................	8
3.2 Electrical................................................................................................................................................	8
3.3 ENGINE DECK..............................................................................................................................................	8
3.4 Cutter Deck.............................................................................................................................................	8
3.5 Weights and Dimensions......................................................................................................................	9
3.6 PRODUCTIVITY............................................................................................................................................	9
SECTION 4 - OPERATING INSTRUCTIONS............................................................................	10
4.1 CONTROLS AND INSTRUMENT IDENTIFICATION .................................................................................	10
4.2 SAFETY INTERLOCK SYSTEM.................................................................................................................	11
4.3 INITIAL RUN-IN PROCEDURES................................................................................................................	11
4.4 STARTING THE ENGINE............................................................................................................................	11
4.5 GROUND TRAVEL AND STEERING..........................................................................................................	11
4.6 ENGAGING THE DECK DRIVE (CUTTER BLADES)................................................................................	12
4.7 HILLSIDE OPERATION..............................................................................................................................	13
4.8 PARKING THE MOWER..............................................................................................................................	13
4.9 AFTER OPERATION...................................................................................................................................	13
4.10 REMOVING CLOGGED MATERIAL.........................................................................................................	14
4.11 MOVING MOWER WITH ENGINE STOPPED...........................................................................................	14
4.12 RECOMMENDATIONS FOR MOWING.....................................................................................................	14
SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS................................................	15

I

R

Table of Contents

SECTION 6 - ADJUSTMENTS..................................................................................................	18
6.1 DRIVE CONTROL ADJUSTMENTS...........................................................................................................	18
6.2 Throttle Control and Choke Adjustments.............................................................................	18
6.3 CUTTER DECK BELT ADJUSTMENTS.....................................................................................................	18
6.4 BELT ALIGNMENT.....................................................................................................................................	19
6.5 ADJUSTING CUTTING HEIGHT................................................................................................................	19
6.6 electric clutch adjustment.........................................................................................................	22
SECTION 7 - MAINTENANCE..................................................................................................	23
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS.......................................................	23
7.2 Lubrication............................................................................................................................................	24
7.3 Engine Oil................................................................................................................................................	26
7.4 Engine Fuel System.............................................................................................................................	26
7.5 Engine Air Cleaner.............................................................................................................................	27
7.6 CUTTER BLADES......................................................................................................................................	27
7.7 TIRES..........................................................................................................................................................	28
SECTION 8 - ILLUSTRATED PARTS LIST...............................................................................	29
8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES......................................................................	29
32" & 36A CUTTER DECKS.............................................................................................................................	30
48V & 52V CUTTER DECKS............................................................................................................................	32
NOTES..............................................................................................................................................................	34
CASTER ASSEMBLY.......................................................................................................................................	35
ENGINE DECK..................................................................................................................................................	36
HANDLE ASSEMBLY.......................................................................................................................................	38
INSTRUMENT PANEL......................................................................................................................................	40
PEERLESS TRANSMISSION 700-070 ............................................................................................................	41
WIRE HARNESSES..........................................................................................................................................	42
REPLACEMENT DECALS AND INFORMATION PLATES..............................................................................	44
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.

- IMPORTANT -

The replacement of any part on this product by other than the manufacturer's authorized replacement part may adversely affect the performance, durability or safety of this product.

Use of other than 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 on the frame of the machine between the engine and transmission were shown in Figure 1-1.

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 8-1.

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 and transmission 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.

Figure 1-1. Mower Serial Number Plate Location

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 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 and the transmission is in neutral. The system shuts off the engine if the operator releases the operator pressence levers with the deck drive engaged and/or the transmission is not in neutral. 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.

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.

2.4 Operation Considerations

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

WARNING

DO NOT operate on steep slopes. 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.

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.Start the engine when the neutral latches are in the neutral lock position, the cutter blades are disengaged, and the transmission is in neutral.

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.

4

Section 2

R

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, stopping the engine, and removing the key.

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

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

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.

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.

19.When transporting the mower, make sure the transmission is in neutral, the neutral latches are in the neutral lock 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.

2.5 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.Place the transmission in neutral, neutral latches in the neutral lock position, 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.Remove spark plug wire before making any repairs.

5

R

Section 2

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.

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.

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.

2.6 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.

6

Section 2

R

2.7 SAFETY AND INSTRUCTIONAL DECALS

WARNING

DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING

KIT, OR ENTIRE GRASS CATCHER INSTALLED

483405

WARNING

INSTALL BELT COvER BEFORE

OPERATING MACHINE

READ OPERATOR'S MANUAL

483405

WARNING

ROTATING BLADES AND BELTS

*Keep hands, feet & clothing clear

*Keep all guards in place

*Shut off engine & disengage blade clutch before servicing

*Use caution in directing discharge

*Read instruction manual before operating

DO NOT OPERATE UNLESS GRASS CATCHER, MULCHING KIT OR

DISCHARGE CHUTE IS INSTALLED 483406

483406

483402

SPINNING BLADES

KEEP CLEAR

BLADE CONTACT & THROWN

OBJECTS CAN INJURE

483505

483505

WARNING

Operation of this equipment may create sparks that can start res around dry vegetation. A spark

arrestor may be required. The operator should contact local re agencies for laws or regulations relating to

re prevention requirements.

483900

483900 (supplied with California models only)

	MOUNT RIDING	WARNING
		FALLING HAzARD
	ATTACHMENT	USE ONLY SCAG APPROvED
	HERE
		RIDING ATTACHMENTS
		SEE OPERATOR'S MANUAL 483404

!CAUTION

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

483404

Molded in Fuel Tank

7

R

Section 3

	SPECIFICATIONS
3.1 ENGINE
General Type.................................................................................................		Heavy Duty Industrial/Commercial Gasoline
Brand.......................................................................................................................................................		Kohler, Kawasaki
Horsepower:
(Scag Model SW32-15KAI)......................................................................................		15 HP (Spec. # FH430V-BS33-R)
(Scag Model SW36A-15KH, SW48V-15KH).......................................................................		15 HP (Spec. # PS-41621)
(Scag Model SW36A-16KAI, SW48V-16KAI)..........................................................		16 HP (Spec. # FH480V-BS24-R)
(Scag Model SW36A-17KAI, SW52V-17KAI)..........................................................		17 HP (Spec.# FH541V-BS38-R))
Cylinders...................................................................................................................		2 with Cast-Iron Sleeves - Kawasaki
.........................................................................................................................................		1 with Cast-Iron Sleeve - Kohler
Governor................................................	Mechanical Type with Variable Speed Control Set At 3600 RPM (+/- 100 RPM)
Idle Speed:
Kohler.....................................................................................................................................		1200 RPM (+/- 75 RPM)
Kawasaki..............................................................................................................................		1550 RPM (+/- 150 RPM)
Fuel......................................................................................		Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump...............................................................................................		varies - see engine manufacturer's specifications
Starter:
Kohler / Kawasaki...................................................................................................................................		Recoil Starter
3.2 Electrical
Starter.........................................................................................................................		Electrical Ignition wi.Recoil Starter
Interlock Switches................................................		Operator Presence, Mower Engagement (BBC), Transmission Neutral
Instrument Panel.................................................................................................		Key Switch, Throttle Lever, PTO Switch,
3.3 ENGINE DECK
Drive System.......................................................................................		Dual Belt Drive w/5-Speed Peerless Transmission
Steering/Travel Control.....................................................................................................		Clutch/Brake Fingertip Steering
Wheels:
(2) Front Caster.....................................................................................................		9 X 3.5 Flat-Free w/Roller Bearings
(2) Drive - ................................................................................		15 x 6.5-6 Two-Ply Pneumatic Tubeless, Radius Edge
Tire Pressure:
Front Caster....................................................................................................................................................		Flat-Free
Drive...................................................................................................................................................................		12 PSI
Fuel Tank.........................................................	6-Gallon Seamless Polyethylene Tank with Large Opening and Fuel Cap
Travel Speed:
Forward...........................................................................................................................................................		2-6 MPH
Reverse...........................................................................................................................................................		0-2 MPH
-NOTE- The machine will travel at 6 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.......................................................................................................................		Out-Front design with anti-scalp rollers
Construction................................	7-Gauge Deck Top w/10-Gauge Reinforced Spindle Area, 7-gauge (3/16") Deck Skirt.
True Cutting Width:
32............................................................................................................................................................		33" (81.3 cm)
36..........................................................................................................................................................		35.5" (90.2 cm)
48...........................................................................................................................................................		48" (122.0 cm)
52...........................................................................................................................................................		52" (132.0 cm)

8

Section 3

R

Cutting Height Adjustment.	............................................................... Adjustment from, 1-3/4" to 4-1/4" 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
Discharge Chute...................................................................................................	Black, Polypropylene (Plastic), Flexible
Spindles.............................................................................	Cast - Iron Housing, Tapered Roller Bearings with Top Access
	Grease Fitting and Grease Overfill Relief Poppet
Spindle Pulleys.........................................................................................................	Split Steel with Tapered Locking Hub
Cutter Deck Belts...................................................................	B - section with Kevlar Cord. Self-Adjusting, Self-Tightening
Electric Clutch Type.................................................................................................	Ogura Heavy Duty PTO Clutch Brake

3.5 Weights and Dimensions	32 / 36A	48V	52v
Length.....................................................................................	70" / 72".............................	76".....................................	76"
Tracking Width.........................................................................	32" / 37".............................	37".....................................	37"
Overall Width w/chute down....................................................	43" / 47"............................	60.5".................................	64.5"
Overall Width w/chute up........................................................	33" / 37".............................	49".....................................	53"
Overall Height.......................................................................	40.5 / 40.5".........................	40.5".................................	40.5"
Operating Weight..................................................................	450# / 470#.........................	515#.................................	535#

3.6 PRODUCTIVITY	32 / 36	48	52
Cutting Width...........................................................................	32" / 36"	............................. 48".....................................	52"
Acres Per Day..........................................................................	8.3 / 9.3............................	12.4..................................	13.5

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 4 MPH with a 20% allowance for overlap and turns.

9

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. Turn the key to the on position before pulling the recoil starter.

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.Left Steering / Brake Control (Figure 4-1). Used to control the mower's left wheel when traveling forward or reverse. Pull upward to apply brake.

6.Right Steering / Brake Control (Figure 4-1). Used to control the mower's right wheel when traveling forward or reverse. Pull upward to apply brake.

TRANSMISSION SHIFT
LEVER		ENGINE
		THROTTLE
NEUTRAL LATCH		CONTROL
		NEUTRAL LATCH
		RIGHT STEERING /
		BRAKE CONTROL
LEFT STEERING /
BRAKE CONTROL
		OPERATOR PRESSENCE
OPERATOR PRESSENCE	MOWER	CONTROL
CONTROL	DECK
IGNITION	SWITCH
SWITCH

Figure 4-1. Controls and Instruments

10

Section 4

R

7.Transmission Shift Lever (Figure 4-1). Used to select the forward speed or selecting reverse. The machine must be at a complete stop before shifting between gears or shifting between forward and reverse.

8.Neutral Latch (Figure 4-1). Used to secure the belt drive system in neutral. Apply neutral latches when parking the machine.

9.Operator Pressence Control (Figure 4-1)

The operator pressence control levers must be depressed before the transmission is shifted out of neutral or engaging the mower deck.

4.2 SAFETY INTERLOCK SYSTEM

The mower is equipped with a safety interlock system that shuts off the engine if the operator releases the operator presence levers with the deck drive engaged and/or the transmission is not in neutral. Never operate equipment with the interlock system disconnected or malfunctioning..

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.

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 for loose hardware. Tighten as needed.

4.Check interlock system for proper operation. (See Section 4.2.)

5.Check tire pressure. Adjust pressure if necessary. (See Section 7.10.)

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 by the fuel tank, is completely open. (See Section 7.5.)

2.Apply the neutral latch levers

3.Shift the transmission into neutral.

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.

7.Turn the ignition key to the ON position.

8.Pull the recoil starter on the engine.

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 walk behind mower with a transmission, 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.

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.

11

R

Section 4

Forward Travel

To travel forward with the mower, select the desired speed using the transmission shift lever, pull steering / brake control levers upward, release the neutral latch for both sides and slowly release both the left and right steering / brake control levers.The higher the gear selected using the transmission shift lever, the faster the machine will travel.

To stop the forward travel, pull upward on the steering / brake control levers, lock the neutral latches and shift the transmission into neutral.

To steer the mower left while traveling forward, pull upward on the left steering / brake control lever.The further the lever is pulled upward, the quicker the mower will turn left.

To steer the mower right while traveling forward, pull upward on the right steering / brake control lever. The further the lever is pulled upward, the quicker the mower will turn right.

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, select the reverse gear using the transmission shift lever, pull steering / brake control levers upward, release the neutral latch for both sides and slowly release both the left and right steering / brake control levers. Keep the travel speed low while traveling in reverse.

- NOTE -

The mower may not travel straight in reverse.

To steer left while traveling in reverse, pull upward on the left steering / brake control lever. The further the lever is pulled upward, the quicker the mower will turn left.

WARNING

To avoid serious bodily injury and damage to the transmission, the machine must be at a full stop before shifting between gears or shifting between forward and reverse.

- NOTE -

Smooth operation of the steering / brake control levers will produce smooth mower operation.While learning the operation of the steering controls, keep the travel speed low.

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.

To steer right while traveling in reverse, pull upward on the right steering / brake control lever. The further the lever is pulled upward, the quicker the mower will turn right.

To stop the reverse travel, pull upward on the steering / brake control levers, lock the neutral latches and shift the transmission into neutral.

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 4-2.

12

Section 4

R

PULL UP TO ENGAGE

PUSH DOWN TO DISENGAGE

390S0138

Figure 4-2. 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.

4.7 HILLSIDE OPERATION

WARNING

DO NOT operate on steep slopes. 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.

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

3.Avoid sudden starts when mowing on slopes.

4.Travel across the slope whenever possible. Never up and down the slope.

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.Disengage the cutter blades.

3.Lock the neutral latches and shift the transmission into the neutral position.

4.Slow the engine to idle speed.

5.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.

13

R

Section 4

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.

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.

4.11 MOVING MOWER WITH ENGINE STOPPED

To “free-wheel” or move the mower around without the engine running, engage the neutral latches, shift the transmission to neutral and move the mower by hand.

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.

14

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

15

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

16

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

17

R

Section 6

ADJUSTMENTS

6.1 DRIVE CONTROL ADJUSTMENTS

1.Adjust the steering control rods so that there is approximately 3/4" clearance from the bottom of the rod to the bottom of the neutral latch slot when in the drive position. See Figure 6-1.

2.Adjust the steering brake rods so that the brakes do not apply until the steering levers are pulled tight to the handles. When the steering levers are locked in the neutral position the machine should move freely.

Neutral

Latch

Neutral Lock

Position

Drive Position

3/4"

Steering

Brake Lever

SC404GB05

6.3 CUTTER DECK BELT ADJUSTMENTS

WARNING

Before removing any guards, shut the engine off and remove the ignition key. Wait for all moving parts to come to a complete stop before beginning work.

1.Remove the belt cover.

2.Adjust the cutter deck drive belt using a belt tension gauge. Adjust the belt so that the belt moves 1/2" with 10 pounds of pressure. Adjust the tension by tightening or loosening the J-bolt. See Figure 6-2.

End Of L-Shaped	"J" Bolt	Belt
Bracket
Nut

Figure 6-1. Steering Control Rod Adjustment

- NOTE -

Operator pressence lever removed for clarity. Never operate equipment with the interlock system disconnected.

6.2 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.

CUTTER DECK DRIVE BELT TENSION	SC400G
ALIGNMENT IDLER - L.H.

Figure 6-2. Deck Drive Belt Adjustment

-NOTE-

Due to initial belt stretch and to prevent the belt from slipping, check this adjustment after the first 2 hours, 4 hours and 8 hours of operation.

3.Adjust the RH blade drive belt using a belt tension gauge. Adjust the belt so that the belt moves 1/2" with 10 pounds of pressure. Adjust the tension by tightening or loosening the J-bolt. See Figure 6-3 and Figure 6-4.

18

Section 6

R

BELT

WASHER

NUT

SC401G

Changes to the cutting height can be acheived by repositioning the cutter deck. (This adjustment will also effect the pitch of the deck). There are three available positions. See Figure 6-5.

Caster spacers also can be repositioned to change the cutting heights and to change the pitch of the cutter deck. See Figure 6-6.

LOW CUT (1-3/4" to 3")

Figure 6-3. Cutter Deck Belt Adjustment R.H.

BELT TENSION

ADJUSTMENT IDLER

DISCHARGE

AREA

CHECK BLADE DRIVE

BELT TENSION HERE

SC402G Rev.2

Figure 6-4. Cutter Deck Belt

6.4 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.

6.5 ADJUSTING CUTTING HEIGHT

The mower deck can be adjusted from a height of 1-3/4 inches to 4-1/4 inches at 1/4-inch intervals.

Due to many cutting conditions that exist, it is difficult to suggest a cutter deck setting that will work for every lawn. There are two adjustments that can be made to the cutter deck, pitch and height.

PITCH is the angle of the blades (comparing front to rear).

HEIGHT is the nominal distance the blade is off of the ground.This measurement is made with the blades pointed side to side and distance is measured between the cutting tip and ground. (Also see Blade Height Adjustment).

MID RANGE (2-1/2" to 3-3/4")

HIGH CUT (3-1/4" to 4-1/2")

Figure 6-5. Adjusting Cutting Height

Pin

Spacers

2003SGB005

Figure 6-6. Cutting Height Decal

BLADE HEIGHT ADJUSTMENT

Adjusting the blade height can be done by moving any number of the five smaller 1/4" spacers on the blade mounting bolts to the top of the spindle shaft or below the spindle shaft.

-NOTE-

All blades should be positioned equally.

19