Scag Power Equipment SFC-21-4GX Manual de usuario

PART NO. 03539

PRINTED 01/23

PRINTED IN USA

Scag Power Equipment

Division of Metalcraft of Mayville, Inc.

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 efciency. The specic models that

this book covers are listed on the inside cover. Before operating your machine,

please read all the information enclosed.

OPERATOR’S

MANUAL

Models: SFC-21-4GX

SFC-21-5CV

SFC-21-7CV

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 all safety instructions on this product and in the manual to avoid

personal injury or death.

• ALWAYS FOLLOW OSHA APPROVED OPERATION.

• This product is capable of amputating hands and feet and throwing objects.

• Keep hands, feet and clothing away from power-driven parts.

• 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.

• If a mechanism becomes clogged, stop the engine before cleaning.

• Keep others o󰀨 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:

SFC-21-4GX with a serial number of W5000001 to W5099999

SFC-21-5CV with a serial number of W5100001 to W5199999

SFC-21-7CV with a serial number of W5200001 to W5299999

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

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 ASSEMBLY INSTRUCTIONS ....................................................................................................................2

1.5 SYMBOLS ...................................................................................................................................................3

SECTION 2 - SAFETY INFORMATION ......................................................................................4

2.1 INTRODUCTION.........................................................................................................................................4

2.2 SIGNAL WORDS ........................................................................................................................................4

2.3 BEFORE OPERATION CONSIDERATIONS ............................................................................................ 4

2.4 TESTING THE BLADE STOP SYSTEM ...................................................................................................5

2.5 OPERATION CONSIDERATIONS.............................................................................................................6

2.6 MAINTENANCE CONSIDERATIONS AND STORAGE ......................................................................7

2.7 USING A SPARK ARRESTOR...................................................................................................................8

2.8 SPARK IGNITION SYSTEM.......................................................................................................................8

2.9 SAFETY AND INSTRUCTIONAL DECALS..............................................................................................9

SECTION 3 - SPECIFICATIONS ..............................................................................................10

3.1 ENGINE .....................................................................................................................................................10

3.2 CONTROLS...............................................................................................................................................10

3.3 MOWER .....................................................................................................................................................10

3.4 CUTTER DECK.........................................................................................................................................10

3.5 WEIGHTS AND DIMENSIONS ................................................................................................................ 11

3.6 PRODUCTIVITY........................................................................................................................................ 11

SECTION 4 - OPERATING INSTRUCTIONS ...........................................................................12

4.1 CONTROLS AND INSTRUMENT IDENTIFICATION ............................................................................ 12

4.2 TESTING THE BLADE STOP SYSTEM .................................................................................................13

4.3 INITIAL RUN-IN PROCEDURES.............................................................................................................14

4.4 STARTING THE ENGINE.........................................................................................................................14

4.5 GROUND TRAVEL ...................................................................................................................................15

4.6 ENGAGING THE CUTTER BLADES ......................................................................................................15

4.7 SLOPE OPERATION................................................................................................................................16

4.8 PARKING THE MOWER ..........................................................................................................................16

4.9 AFTER OPERATION ................................................................................................................................16

4.10 REMOVING CLOGGED MATERIAL .....................................................................................................17

4.11 MOVING MOWER WITH ENGINE STOPPED......................................................................................17

4.12 RECOMMENDATIONS FOR MOWING ................................................................................................17

4.13 ADJUSTING CUTTING HEIGHT ...........................................................................................................18

Table of Contents

SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ...............................................19

SECTION 6 - ADJUSTMENTS .................................................................................................22

6.1 SELF-PROPEL DRIVE ADJUSTMENTS................................................................................................22

6.2 THROTTLE CONTROL AND CHOKE ADJUSTMENTS ....................................................................... 24

6.3 TRANSMISSION DRIVE BELT................................................................................................................24

6.4 BLADE CONTROL BAR CABLE ADJUSTMENT .................................................................................24

6.5 CUTTER DECK ADJUSTMENTS............................................................................................................25

SECTION 7 - MAINTENANCE..................................................................................................26

7.6 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS ................................................26

7.7 ENGINE OIL ..............................................................................................................................................27

7.8 ENGINE FUEL SYSTEM ..........................................................................................................................27

7.9 ENGINE AIR CLEANER...........................................................................................................................29

7.10 DRIVE BELT............................................................................................................................................29

7.11 CUTTER BLADE.....................................................................................................................................30

7.12 WHEELS..................................................................................................................................................31

7.13 BODY AND DECK ..................................................................................................................................31

SECTION 8 - ILLUSTRATED PARTS LIST..............................................................................32

8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES ................................................................32

CUTTER DECK...............................................................................................................................................34

SHEET METAL COMPONENTS....................................................................................................................36

BAG ASSEMBLY ............................................................................................................................................38

HANDLE BAR COMPONENTS .....................................................................................................................40

REAR DRIVE SYSTEM COMPONENTS ......................................................................................................42

FUEL SYSTEM (MACHINES WITH 7CV ENGINE)......................................................................................44

REPLACEMENT DECALS AND INFORMATION PLATES ........................................................................46

LIMITED WARRANTY - ..........................................................................INSIDE BACK COVER

Section 1

GENERAL INFORMATION

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. Be aware that using

attachments with the mower may affect stability. Be sure to

follow the directions found in the operator's manual. See

Section 8, Paragraph 8-1.

WARNING

For pictorial clarity, some illustrations and gures

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 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, transmissions

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 Authorized Scag

Power Equipment 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.

1.1 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

Authorized Scag Power Equipment Dealer.

We encourage you to contact your Authorized Scag Power

Equipment 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 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 right side on the frame. See Figure 1-1.

LOT

ABCD

1234

Division of Metalcraft of Mayville

Assembled in West Bend, WI

www.scag.com/patents

Meets CPSC

blade safety

requirements

Figure 1-1. Mower Serial Number Plate Location

Section 1

1.4 ASSEMBLY INSTRUCTIONS

1. In an open area, remove the grass bag, hardware

bag and mower from the packaging.

2. With help from an assistant, loosen the two (2) 3/8-

16 elastic flange nuts identified and raise the handle

bar assembly. See Figure 1-2.

Figure 1-2. Lift the Handle Bar Assembly

3. While holding the handle bar assembly in place,

secure using four (4) 3/8-16 x 3/4" carriage bolts

and four (4) 3/8-16 elastic flange nuts provided as

shown tighten mounting hardware and pivot bolts

See Figure 1-3.

Figure 1-3. Secure the Handle Bar Assembly

4. The engine installed on this mower is shipped

"dry" from the factory. Add the recommended

amount of oil to the engine per the engine operator's

manual supplied with this mower.

5. Install the fabric grass collection bag over the bag

frame weldment. See Figure 1-4.

Figure 1-4. Install the Fabric Grass Collection Bag

6. Secure the fabric grass collection bag to the frame

weldment using the eight (8) hooks located on the

each side. See Figure 1-5.

Figure 1-5. Install the Grass Collection Bag

7. Install the grass collection bag onto the back of the

mower.

8. Assembly is now complete on the mower.

Section 1

1.5 SYMBOLS

SYMBOL DESCRIPTION SYMBOL DESCRIPTION

Choke

Transmission

Parking Brake

48071S

Spinning Blade

On/Start

Spring Tension on Idler

O󰀨/Stop

Oil

Falling Hazard

Thrown Object Hazard

Fast

Slow

Continuously Variable - Linear

Cutting Element - Basic Symbol

481039S

Pinch Point

Cutting Element - Engage

Hour meter/Elapsed Operating Hours

Cutting Element - Disengage

Keep Bystanders Away

Read Operator's Manual

Section 2

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.

This product is capable of amputating hands and feet and

throwing objects. Always follow all safety instructions on this

product and in the manual to avoid personal injury or death.

READ THIS OPERATOR’S MANUAL BEFORE

ATTEMPTING TO START YOUR MOWER. MAKE

SURE THAT EVERYONE KNOWS WHERE THE

MANUAL IS LOCATED AND KEEP A RECORD OF

EACH EMPLOYEE THAT HAS READ THE MANUAL.

A replacement manual is available from your Authorized

Scag Power Equipment 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

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.

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.

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.

SAFETY INFORMATION

Section 2

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.

7. If the operator(s) or mechanic(s) cannot read

English, it is the owner's responsibility to explain this

material to them. A Spanish decal kit is available for

this model. See your local Authorized Scag Power

Equipment Dealer.

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 and substantial slip-resistant footwear.

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.

10. 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.

11. 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.

12. DO NOT start the engine until any spilled fuel has

been cleaned up or has evaporated.

13. Keep flammable objects (cigarettes, matches, etc.),

open flames and sparks away from the fuel tank and

fuel container. Use only approved containers.

14. See Section 7.3 ENGINE FUEL SYSTEM for fueling

procedure.

15. Equipment must comply with the latest requirements

per SAE J137 and/or ANSI/ASAE S279 when driven

on public roads.

16. Do not operate without the discharge plug installed

or with the grass catcher installed.

17. Check the blade mounting bolts at frequent intervals

for proper tightness.

2.4 TESTING THE BLADE STOP SYSTEM

The blade stop system should be tested each time before

using the machine. Check that the blade stops within 3

seconds of releasing the control bar as described below.

-IMPORTANT-

If the blade does not stop within 3 seconds of

releasing the control bar, contact your local

Authorized Scag Power Equipment Dealer

immediately to have the blade stop system

repaired.

TEST USING THE GRASS BAG

1. Remove the rear discharge plug.

2. Install the empty grass bag onto the rear of the

machine.

3. Start the engine. Allow the engine to warm up before

engaging the blade.

4. Engage the blade.

-NOTE-

The bag should begin to inflate, indicating that the

blade is rotating.

5. Watch the bag and release the control bar.

6. Immediately start counting out 3 seconds and watch

for the bag to deflate.

-NOTE-

If the bag does not deflate within 3 seconds of

releasing the control bar, the blade stop system

could be deteriorating or out of adjustment. Contact

your local Authorized Scag Power Equipment

Dealer immediately to have the blade stop system

repaired.

7. Shut the engine off and wait for all moving parts to

stop.

Section 2

TEST NOT USING THE GRASS BAG

1. Remove the grass bag.

2. Install the rear discharge plug.

3. Move the machine onto a paved surface such as

a driveway, sidewalk, parking lot or patio next to a

section of grass.

4. Position the machine next to a patch of grass and

approximately 3" away. See Figure 2-1.

5. Start the engine. Allow the engine to warm up before

engaging the blade.

6. Engage the blade.

-NOTE-

The grass next to the the machine should start to

move from the air flow, indicating that the blade

is rotating.

3”

Figure 2-1. Blade Stop

7. Watch the grass and release the control bar.

8. Immediately start counting out 3 seconds and watch

for the grass to stop moving.

-NOTE-

If the grass does not stop moving within 3 seconds

of releasing the control bar, the blade stop system

could be deteriorating or out of adjustment. Contact

your local Authorized Scag Power Equipment

Dealer immediately to have the blade stop system

repaired.

9. Shut the engine off and wait for all moving parts to

stop.

2.5 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. Do not mow or operate on excessively steep slopes.

Poor footing could cause a slip and fall accident.

4. To prevent tipping or loss of control, start and stop

smoothly, avoid unnecessary turns and travel at

reduced speed.

5. Immediately stop the machine if you lose drive

control while operating. Inspect the machine and

correct the problem before continuing to operate.

6. When using any attachment, never direct the

discharge of material toward bystanders or allow

anyone near the machine while in operation.

7. Start the engine when the blade control bar is in

the neutral lock position, and the drive control bar is

disengaged.

8. If the mower discharge ever plugs, shut off the

engine, remove the spark plug wire, and wait for all

movement to stop before removing the obstruction.

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