Scag Power Equipment V-RIDE SVR36A-20FX User manual

OPERATOR’S
MANUAL
Part No. 03259
Printed 1/10
Printed in USA
© 2010
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.
V-Ride
Model: SVR36A-20FX
SVR48V-24FX
SVR52V-26FX

WARNING
FAILURETO 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.•
Under no circumstances should the machine be operated on slopes greater than 20• degrees. ALWAYS FOLLOW OSHA APPROVED OPERATION.
Stay two cut widths away from slopes, drop offs, ditches and retaining walls.•
DO NOT back down a slope or ramp.•
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 mow• er (only one person at a time)
REMEMBER -YOUR MOWER IS ONLY AS SAFE ASTHE 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 OFTHE EQUIPMENT.
This manual covers the operating instructions and illustrated parts list for:
SVR36A-20FX with a serial number of E8200041 to E8299999
SVR48V-24FX with a serial number of E8300031 to E8399999
SVR52V-26FX with a serial number of E8400031 to E8499999
Always use the entire serial number listed on the serial number tag when referring to this product.

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Table of Contents
Table of Contents
GENERAL INFORMATIONSECTION 1 - ...................................................................................1
1.1 INTRODUCTION...........................................................................................................................................1
1.2 DIRECTION REFERENCE...........................................................................................................................1
1.3 SERVICINGTHE ENGINE AND DRIVETRAIN COMPONENTS.................................................................1
1.4 SYMBOLS ....................................................................................................................................................2
SAFETY INFORMATIONSECTION 2 - ......................................................................................3
2.1 INTRODUCTION...........................................................................................................................................3
2.2 SIGNALWORDS..........................................................................................................................................3
2.3 BEFORE OPERATION CONSIDERATIONS................................................................................................3
2.4 OPERATION CONSIDERATIONS................................................................................................................4
2.5 MAINTENANCE CONSIDERATIONS & STORAGE....................................................................................6
2.6 USING A SPARK ARRESTOR.....................................................................................................................6
2.7 SAFETY AND INSTRUCTIONAL DECALS.................................................................................................7
SPECIFICATIONSSECTION 3 - ................................................................................................8
3.1 ENGINE ........................................................................................................................................................8
3.2 ELECTRICAL ...............................................................................................................................................8
3.3 ENGINE DECK.............................................................................................................................................8
3.4 CUTTER DECK ............................................................................................................................................8
3.5WEIGHTS AND DIMENSIONS.....................................................................................................................9
3.6 PRODUCTIVITY ...........................................................................................................................................9
OPERATING INSTRUCTIONSSECTION 4 - ...........................................................................10
4.1 CONTROLS AND INSTRUMENT IDENTIFICATION ................................................................................10
4.2 SAFETY INTERLOCK SYSTEM................................................................................................................11
4.3 INITIAL RUN-IN PROCEDURES................................................................................................................11
4.4 STARTINGTHE ENGINE ...........................................................................................................................11
4.5 GROUNDTRAVEL AND STEERING.........................................................................................................12
4.6 ENGAGINGTHE DECK DRIVE (CUTTER BLADES)................................................................................13
4.7 HILLSIDE OPERATION..............................................................................................................................14
4.8 PARKINGTHE MOWER.............................................................................................................................14
4.9 AFTER OPERATION..................................................................................................................................14
4.10 REMOVING CLOGGED MATERIAL ........................................................................................................14
4.11 MOVING MOWERWITH ENGINE STOPPED..........................................................................................15
4.12 RECOMMENDATIONS FOR MOWING....................................................................................................15
4.13 ADJUSTING CUTTING HEIGHT.............................................................................................................15
TROUBLESHOOTING CUTTING CONDITIONSSECTION 5 - ...............................................16

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Table of Contents
ADJUSTMENTSSECTION 6 - .................................................................................................19
6.1 PARKING BRAKE ADJUSTMENT ............................................................................................................19
6.2TRAVEL ADJUSTMENT.............................................................................................................................19
6.3THROTTLE CONTROL AND CHOKE ADJUSTMENTS............................................................................21
6.4 BELT ADJUSTMENTS...............................................................................................................................21
6.5 BELT ALIGNMENT.....................................................................................................................................21
6.6 CUTTER DECK ADJUSTMENTS ..............................................................................................................21
6.7 ELECTRIC CLUTCH ADJUSTMENT.........................................................................................................26
6.8 FRONTWEIGHT ADJUSTMENT..............................................................................................................26
6.9 OPERATOR CUSHION ADJUSTMENT.....................................................................................................27
MAINTENANCESECTION 7 - ..................................................................................................29
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS ......................................................29
7.2 LUBRICATION............................................................................................................................................30
7.3 HYDRAULIC SYSTEM...............................................................................................................................32
7.4 ENGINE OIL ...............................................................................................................................................33
7.5 ENGINE FUEL SYSTEM............................................................................................................................34
7.6 ENGINE AIR CLEANER.............................................................................................................................34
7.7 BATTERY - ELECTRIC START MODELS..................................................................................................35
7.8 CUTTER BLADES......................................................................................................................................36
7.9TIRES..........................................................................................................................................................37
7.10 BODY AND DECK....................................................................................................................................37
ILLUSTRATED PARTS LISTSECTION 8 - ..............................................................................38
8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES......................................................................38
NOTES..............................................................................................................................................................39
36A CUTTER DECK.........................................................................................................................................40
48V & 52V CUTTER DECKS ...........................................................................................................................42
CUTTER DECK CONTROLS...........................................................................................................................44
SHEET METAL COMPONENTS ......................................................................................................................46
STEERING CONTROLS AND FUEL COMPONENTS.....................................................................................48
HYDRAULICS AND ENGINE COMPONENTS ................................................................................................50
ELECTRICAL SYSTEM ...................................................................................................................................52
HYDRAULIC PUMP ASSEMBLY.....................................................................................................................54
REPLACEMENT DECALS AND INFORMATION PLATES .............................................................................56
SVR ELECTRICAL SCHEMATIC.....................................................................................................................58
LIMITEDWARRANTY - COMMERCIAL EQUIPMENT.........................Following Section 8

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Section 1
INTRODUCTION1.1
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 where shown in Figure 1-1.
R
MODEL
SERIAL
Division of Metalcraft of Mayville, Inc.
Mayville, Wisconsin 53050
Patents Issued and Pending
SERIAL NUMBER
PLATE LOCATION
Mower Serial Number Plate LocationFigure 1-1.
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.
WARNING
Forpictorialclarity,someillustrationsandfigures
inthismanual mayshowshields,guardsorplates
openorremoved.Undernocircumstancesshould
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.
DIRECTION REFERENCE1.2
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.
SERVICINGTHE ENGINE AND DRIVE1.3
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.

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Section 1
SYMBOLS1.4
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Choke Transmission
Parking Brake
48071S
Spinning Blade
On/Start Spring Tension on Idler
Off/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
Crush Hazard. CE Mark
Thrown Object Hazard
Keep Bystanders Away
Read Operator's Manual

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Section 2
INTRODUCTION2.1
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,maintenanceandstorageof theequipment.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
accidentsor injuries occurringtothemselves,otherpeople
or property.
READ THIS OPERATOR’S MANUAL BEFORE
ATTEMPTING TO STARTYOUR MOWER.
A replacement manual is available from your authorized
Scag Service Dealer or by contacting Scag Power
Equipment,Service Department at P.O.Box152,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.
SIGNALWORDS2.2
This symbol means “Attention! Become Alert! Your
Safety is Involved!" Thesymbolisused with thefollowing
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
possibledeath,carefullyreadthemessage!Besuretofully
understand the causes of possible injury or death.
SIGNALWORD:
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
couldresult inhighprobabilityofdeathor irreparableinjury
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
Thesignal word“CAUTION”isareminderofsafetypractices
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.
BEFORE OPERATION2.3
CONSIDERATIONS
NEVER allow children to operate this mower.Do not1. allow adults to operate this machine without proper
instructions.
Do not mow when children and/or others are2. 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.
DO NOT allow children to ride or play on the3. machine, it is not a toy.
Clear the area to be mowed of objects that could be4. picked up and thrown by the cutter blades.
DO NOT carry passengers.5.
DO NOT operate the machine under the influence of6. alcohol or drugs.
SAFETY INFORMATION

4
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If the operator(s) or mechanic(s) cannot read English7. or Spanish, it is the owner's responsibility to explain
this material to them.
DO NOT wear loose fitting clothing.Loose clothing,8. 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.
Keep the machine and attachments in good9. 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 neutral lock lever
is in the neutral lock position, and the operator
is in the operating position.The system shuts off
the engine if the operator steps off the operator
platform with the deck drive engaged or if the
neutral lock lever is placed in the drive position
(D) andthe parking brakeis applied.Never operate
equipment withthe interlock system disconnected
or malfunctioning.
Be sure the interlock switches are functioning10. correctly.
Fuel is flammable;handle it with care.Fill the fuel11. tank outdoors. Never fill it indoors.Use a funnel or
spout to prevent spillage. Clean up any spillage
before starting the engine.
DO NOT add fuel to a running or hot engine. Allow12. the engine to cool for several minutes before adding
fuel. Never fuel indoors or inside enclosed trailers.
Keep flammable objects (cigarettes, matches, etc.),13. open flames and sparks away from the fuel tank and
fuel container.Use only approved containers.
Equipment must comply with the latest requirements14. per SAE J137 and/or ANSI/ASAE S279 when driven
on public roads.
Do not operate without the side discharge chute15. installed and in the down position or with an optional
grass catcher or mulch plate completely installed.
Check the blade mounting bolts at frequent intervals16. for proper tightness.
Make sure all hydraulic fluid connections are tight17. and all hydraulic hoses and lines are in good
condition before starting the machine.
OPERATION CONSIDERATIONS2.4
Know the function of all controls and how to stop1. quickly.
WARNING
DO NOT operate on steep slopes. Under no
circumstances should the machine be operated
on slopes greater than 20 degrees. ALWAYS
FOLLOW OSHA APPROVED OPERATION.
Reduce speed and exercise extreme caution on2. slopes and in sharp turns to prevent tipping or loss
of control. Be especially cautious when changing
directions on slopes.
Stay two cut widths away from slopes, drop offs,3. ditches and retaining walls.
To prevent tipping or loss of control, start and stop4. smoothly, avoid unnecessary turns and travel at
reduced speed.
When using any attachment, never direct the5. discharge of material toward bystanders or allow
anyone near the machine while in operation.
Start the engine with the operator in the operating6. position, cutter blades are disengaged, parking
brake is engaged, and the neutral lever is in neutral.
If the mower discharge ever plugs, shut off the7. engine, remove the ignition key, and wait for all
movement to stop before removing the obstruction.

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Section 2
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.
Be alert for holes, rocks, roots and other hidden8. hazards in the terrain. Keep away from any drop
offs.Beware of overhead obstructions (low limbs,
etc.), underground obstacles (sprinklers, pipes, tree
roots, etc.).Cautiously enter a new area. Be alert for
hidden hazards.
Disengage power to cutter deck before backing up.9. 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.
DO NOT turn sharply. Use care when backing up.10.
Disengage power to cutter deck before crossing11. roads, walks or gravel drives.
Mow only in daylight or good artificial light.12.
NEVER raise the deck with the blades engaged.13.
Take all possible precautions when leaving the14. machine unattended, such as disengaging the
mower, stopping the engine, and removing the key.
Disengage power to the attachments when15. transporting or when not in use.
The machine and attachments should be stopped16. 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.
Keep hands and feet away from cutter blades and17. moving parts. Contact can injure.
Transport the mower using a heavy duty trailer18. 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.
Be cautious when loading and unloading onto19. trailers or trucks. Use only a full width ramp. Always
back on and drive off a trailer.
When transporting the mower, make sure the neutral20. lock lever is in neutral lock, the engine is off with the
key removed, the parking brake is engaged and the
wheels have been blocked.
Tie the mower down securely using the tie down21. points located on the front and rear of the machine.
See Figure 2-1 and 2-2. Secure using straps, chains,
cable, or ropes.Both front and rear straps must be
directed down and outward from machine.
TIE DOWN
POINT TIE DOWN
POINT
FrontTie Down PointsFigure 2-1.

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Section 2
TIE DOWN
POINT TIE DOWN
POINT
RearTie Down PointsFigure 2-2.
Use care when approaching blind corners, shrubs,22. trees, or other objects that may obscure vision.
NEVER leave the machine running unattended.23.
MAINTENANCE CONSIDERATIONS &2.5
STORAGE
Never make adjustments to the machine with the1. engine running unless specifically instructed to do
so. If the engine is running, keep hands, feet, and
clothing away from moving parts.
Place the neutral lock lever in neutral lock, engage2. the 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.
Remove spark plug wire before making any repairs.3.
Keep all nuts, bolts and screws tight, to ensure the4. machine is in safe working condition. Check blade
mounting bolts frequently to be sure they are tight.
Do not change the engine governor settings or5. overspeed the engine.See the engine operator's
manual for information on engine settings.
To reduce fire hazard, keep the cutting units, drives,6. muffler and engine free of grass, leaves, excessive
grease, oil and dirt.
Park the machine on level ground.7.
NEVER allow untrained personnel to service the8. machine.
Use care when checking blades.Use a Blade Buddy,9. wrap the blade(s) or wear gloves and USE CAUTION
when servicing blades. Only replace blades.NEVER
straighten or weld blades.
Keep all parts in good working condition. Replace all10. worn or damaged decals.
Use jack stands to support components when11. required.
Carefully release pressure from components with
12. stored energy.
WARNING
Hydraulicfluid isunderhigh pressure.Keepbody
and hands away from pin holes 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.
Let the engine cool before storing.13.
DO NOT store the machine near an open flame.14.
Shut off fuel while storing or transporting.15.
DO NOT store fuel near flames or drain indoors.16.
USING A SPARK ARRESTOR2.6
The engine in this machine is not equipped with a spark
arrestor muffler. It is in violation of California Public
ResourceCodeSection4442touse oroperatethisengine
on or near any forest covered, brush covered or grass
covered land unless the exhaust system is equipped with
a spark arrestor meetingany applicablelocal or state laws.
Otherstates orfederalareas mayhavesimilarlaws.Check
withyourstateorlocalauthoritiesforregulationspertaining
to these requirements.

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Section 2
SAFETY AND INSTRUCTIONAL DECALS2.7
483407
483402
483397
483406
2009 SVR Safety Decals
482291
484075
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)
483405

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Section 3
SPECIFICATIONS
ENGINE3.1
General Type ................................................................................................Heavy Duty Industrial/Commercial Gasoline
Brand..................................................................................................................................................................Kawasaki
Horsepower:
(Scag Model SVR36A-20FX) ..................................................................................20 HP (Spec.# FX600V-AS09-R)
(Scag Model SVR48V-24FX)....................................................................................24 HP (Spec.# FX691V-AS11-R)
(Scag Model SVR52V-26FX)....................................................................................26 HP (Spec.# FX730V-AS06-R)
Cylinders.....................................................................................................................................2 with Cast-Iron Sleeves
Governor................................................Mechanical Type with Variable Speed Control Set At 3600 RPM (+/- 100 RPM)
Idle Speed:
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:
Kawasaki....................................................................................................Electric Starting with solenoid shift starter
ELECTRICAL3.2
Starter..................................................................12-Volt Electric Ring Gear Type, Key and Solenoid Operated Interlock
Interlock Switches............................................................Operator Presence, Mower Engagement (BBC), Neutral Lever
Instrument Panel ..........................Key Switch, Throttle Lever, Choke Lever, PTO Switch, Hour Meter and Neutral Lever
ENGINE DECK3.3
Drive System............................................................................. Hydraulic Drive with Two Variable Displacement Pumps
and Two Cast-Iron High Torque Wheel Motors
Hydraulic Pumps.............................................................Two Hydro-Gear model PG Series 10 cc. Hydraulic Pumps
with Dump Valves for movement without the engine running
Hydraulic Drive Motors.....................................................Two Hydro-Gear Model HGM 12P Cast-Iron Wheel Motors
Steering/Travel Control..............................................Twin Lever Steering Control with Individual Control to Each Wheel
Parking Brake...........................................................................Lever Actuated Linkage to Brakes on Both Drive Wheels
Wheels:
(2) Front Caster..................................................................................................11 X 4-5 Flat-Free w/Roller Bearings
(2) Drive - ................................18 x 7.0-8 (36"), 20 x 10.5-8 (48" &52") Four-Ply Pneumatic Tubeless, Radius Edge
Tire Pressure:
Front Caster....................................................................................................................................................Flat-Free
Drive.................................................................................................................................................................. 12 PSI
Fuel Tank........................................................................5-1/2 Gallon Seamless PolyethyleneTank with Large Opening,
Fuel Cap, Fuel Gauge and Integrated Cup Holder
Travel Speed:
Forward ..............................................................................................................................................0 up to 8.5 MPH
Reverse..............................................................................................................................................0 up to 6.0 MPH
-NOTE- The machine will travel at 8.5 mph for transport purposes. For best cutting performance the forward travel
speed should be adjusted depending upon the cutting conditions.
CUTTER DECK3.4
Type......................................................................................................................Out-Front design with anti-scalp rollers
Construction .............................................................................36 / 48 = 7-Gauge Deck Top, 7-gauge (3/16") Deck Skirt
52 = 10-Gauge DeckTop, 7-Gauge (3/16") Deck Skirt

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Section 3
True Cutting Width:
36 .........................................................................................................................................................35.5" (90.2 cm)
48 ..........................................................................................................................................................48" (122.0 cm)
52 ..........................................................................................................................................................52" (132.0 cm)
Cutting Height Adjustment................................................................Adjustment from, 1-1/2" to 4-1/2" 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 Cords
Electric Clutch Type................................................................................................Ogura Heavy Duty PTO Clutch Brake
WEIGHTS AND DIMENSIONS SVR-36A SVR-48V SVR-52V3.5
Length (with foot plate down)...................................................... 71".............................69-1/2'"...........................71-3/4"
Length (with foot plate in transport position)............................... 67" .............................65-1/2" ............................67-3/4
Tracking Width......................................................................... 35-1/2".......................... 41-3/4" ...........................41-3/4"
Overall Width w/chute down.................................................... 47-3/4"..........................61-1/4" ...........................65-1/4"
Overall Width w/chute up......................................................... 37-1/4".......................... 49-3/4" ...........................53-3/4"
Overall Height.......................................................................... 46-1/2" ..........................47-1/2" ...........................47-1/2"
Operating Weight.......................................................................775#..............................860#................................860#
PRODUCTIVITY 36 48 523.6
Cutting Width 36" 48" 52"
Acres Per Day 14 18.6 20.2
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.

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Section 4
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.
CONTROLS AND INSTRUMENT4.1
IDENTIFICATION
Before operating the mower, familiarize yourself with all
mower andenginecontrols.Knowingthelocation, function
and operation of these controls is important for safe and
efficient operation of the mower.
Ignition Switch (Figure 4-1).1. The ignition switch
is used to start the engine and has three positions;
OFF, ON, and START.
OPERATING INSTRUCTIONS
Mower Deck Switch (Figure 4-1).2. 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.
Engine Choke Control (Figure 4-1).3. Used to start
a cold engine.
EngineThrottle Control (Figure 4-1).4. 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.
Hourmeter (Figure 4-1).5. Indicates the number of
hours the engine has been operated. It operates
whenever the engine is running. 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.
RIGHT STEERING
CONTROL
DECK LIFT
PARKING BRAKE
CONTROL
CUTTING HEIGHT
ADJUSTMENT
NEUTRAL LOCK
CONTROL
LEFT STEERING
CONTROL
FUEL GAUGE
HOURMETER
MOWER DECK
SWITCH
IGNITION SWITCH
ENGINE CHOKE
CONTROL
ENGINE
THROTTLE
CONTROL
Controls and InstrumentsFigure 4-1.

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Section 4
Left Steering Control (Figure 4-1).6. Used to control
the mower's left wheel when traveling forward or
reverse. See Section 4.5 for further details regarding
the mower's travel controls.
Right Steering Control (Figure 4-1).7. Used to
control the mower's right wheel when traveling
forward or reverse. See Section 4.5 for further details
regarding the mower's travel controls.
Neutral Lock Lever (Figure 4-1).8. Used to
disengage the mower drive in the neutral lock
position (N) or to engage to the mower's drive in the
drive position (D).See Section 4.5 for further details
regarding the mower's travel controls.
Parking Brake Control (Figure 4-1).9. 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.
Deck Lift Lever (Figure 4-1).10. Used to raise and
lower the cutter deck.
Cutting Height Adjustment (Figure 4-1).11. Used to
set the cutter deck at the desired cutting height.
FuelTank Gauge (Figure 4-1).12. Indicates the amount
of fuel in the fuel tank.
SAFETY INTERLOCK SYSTEM4.2
The mower 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 neutral
lock lever is in the neutral lock position, and the operator
is in the operating position.The system shuts off the
engine if the operator steps off the operator platform
with the deck drive engaged or if the neutral lock lever
is placed in the drive position (D) and the parking brake
is applied. 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.
INITIAL RUN-IN PROCEDURES4.3
FIRST DAY OF USE OR APPROXIMATELY 20 HOURS
Check all belts for proper alignment and wear at 2, 41. and 8 hours.
Change the engine oil and oil filter after the first 202. hours of operation.See Section 7.4.
Check oil level in the hydraulic system reservoir.3. See Section 7.3
Check for loose hardware.Tighten as needed.4.
Check interlock system for proper operation.5. See Section 4.2.
Check tire pressure. Adjust pressure if necessary.6. See Section 7.10.
STARTINGTHE ENGINE4.4
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.
Be sure the fuel shutoff valve, located by the fuel1. tank, is completely open. See Section 7.5.
Place the neutral lock lever in the neutral position2. and disengage the the cutter blades .
Engage the parking brake.3.
If the engine is cold, choke the engine as needed.4.
Move the engine throttle control to about half engine5. speed.
Turn the ignition key to the start position and start6. the engine.
Allow engine to warm before operating the mower.7.

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Section 4
GROUNDTRAVEL AND STEERING4.5
- IMPORTANT -
If you are not familiar with the operation of a
machine with lever steering and/or hydrostatic
transmissions, the steering and ground speed
operations should be learned and practiced in
an open area, away from buildings, fences, or
obstructions. Practice until you are comfortable
withthehandlingofthemachinebeforeattempting
to mow. Learn the operation on flat ground before
operating on slopes.
- IMPORTANT -
Start practicingwitha slowenginespeedandslow
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.
FORWARDTRAVEL
To travel forward with the mower, disengage the parking
brake, place the neutral lock lever in the drive (D) position
andslowlypushthesteeringcontrolleversforwardanequal
distance. Thefurtherthesteeringcontrolleversarepushed
forward, the greater the forward speed will be. To increase
the speed, push the steering control levers forward and
to decrease speed, pull the steering control levers back.
See Figure 4-2.
To stop the forward travel completely, pull the steering
control levers back to the neutral position.
To steer the mower to the left while traveling forward,
pull the left steering control lever back. The further the
steering control is pulled back, the quicker the mower will
turn left. See Figure 4-3.
To steer the mower to the right while traveling forward,
pull the right steering control lever back. The further the
steering control is pulled back, the quicker the mower will
turn right. See Figure 4-3.
- NOTE -
Smoothoperationofthesteeringcontrolleverswill
produce smooth mower operation.While learning
the operation of the steering controls, keep the
travel speed low.
REVERSETRAVEL
CAUTION
Disengage power to the mower before backing
up. Do not mow in reverse unless absolutely
necessary and then only after observation of the
entire area behind the mower.
CAUTION
Before backing up, observe the rear for persons
and obstructions. Clear the area before backing
up. Possible injury or property damage could
occur.
To travel in reverse, pull both steering control 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, engage the parking brake and place the neutral
lock lever in the neutral (N) position.

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Section 4
PUSH FOR
FORWARD
PULL BACK
FOR REVERSE
“N”FOR NEUTRAL LOCK
“D”FOR DRIVE
NEUTRAL
Forward / Reverse ControlsFigure 4-2.
WHILETRAVELING FORWARD,PULL BACK
ON RIGHT STEERING CONTROLTO STEER RIGHT
WHILETRAVELING FORWARD, PULL BACK
ON LEFT STEERING CONTROLTO STEER LEFT
Steering ControlsFigure 4-3.
ENGAGINGTHE DECK DRIVE (CUTTER4.6
BLADES)
Set the throttle at about 3/4 speed. Do not attempt to1. engage the deck drive at high speed as this shortens
the electric clutch life — use only moderate engine
speed when engaging the deck drive.
Engage the deck drive by pulling out on the yellow
2. switch, located on the instrument panel, to the
engage position. See Figure 4-2.
390S0138
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
Cutter Engage SwitchFigure 4-4.
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 are behind the mower.
CAUTION
Before backing up,observe behind the mower for
persons and obstructions. Clear the area before
backing up. Possible injury or property damage
could occur.
- NOTE -
A squealing noise may be heard when engaging
or disengaging the deck drive. It is caused by the
electricclutchplatesmeshingasthemowercomes
up to speed.This is normal.

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Section 4
To disengage the deck drive, push the switch in to3. the disengage position.
Always operate the engine at full throttle to properly
4. maintain cutting speed. If the engine starts to lug
down, reduce the forward speed and allow the
engine to operate at maximum RPM.
HILLSIDE OPERATION4.7
WARNING
DO NOT operate on steep slopes. Under no
circumstances should the machine be operated
on slopes greater than 20 degrees. ALWAYS
FOLLOW OSHA APPROVED OPERATION.
This mower has been designed for good traction and1. 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.
Stay two cut widths away from slopes, drop offs,2. ditches and retaining walls.
To prevent tipping or loss of control, do not start or3. stop suddenly, avoid unnecessary turns and travel
at reduced speed. If tires lose traction, disengage
blades and proceed slowly off the slope.
Avoid sudden starts when mowing uphill. Sudden4. starts may cause the machine to tip backwards.
Loss of traction may occur when traveling down hill.5. Weight transfers to the front of the machine and
may cause the drive wheels to slip causing loss of
braking or steering.
Never back down hill.6.
Keep tires properly inflated.7.
PARKINGTHE MOWER4.8
Park the machine on a flat, level surface only. Do not1. park the machine on an incline.
Disengage the cutter blades.
2.
Shift the neutral lock lever into the neutral (N)3. position.
Engage the parking brake.4.
Slow the engine to idle speed.5.
Turn the ignition key to the OFF position and remove6. the key.
AFTER OPERATION4.9
Wash the entire mower after each use. Do not1. 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.
Keep the entire mower clean to inhibit serious heat
2. damage to the engine or hydraulic oil circuit.
Check the drive belts for proper alignment and any3. 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.
After the mower has cooled down, fill the fuel tank
4. with fresh, clean fuel at the end of every day of
operation.See Engine Owner's Manual for proper
octane requirements.
Check the tire pressure. Adjust pressure if5. necessary.
REMOVING CLOGGED MATERIAL4.10
DANGER
ROTATING BLADES
NEVERPUTYOURHANDSINTOTHEDISCHARGE
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.
If the discharge chute becomes clogged, shut off
1. the engine and remove the ignition key. Using a stick
or similar item, dislodge the clogged material.Then
resume normal mowing.

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Section 4
MOVING MOWER WITH ENGINE4.11
STOPPED
To “free-wheel” or move the mower around without the
engine running, place the dump valve levers in the FREE-
WHEEL position. Disengage the parking brake and move
the mower by hand. The dump valve levers must be
returned to the DRIVE position and torqued to 7-10 ft/lbs
to drive the mower.
RECOMMENDATIONS FOR MOWING4.12
Do not mow with dull blades.A dull blade will tear1. 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.
The discharge chute must not be removed and2. 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.
Cut grass when it is dry and not too tall. Do not cut
3. grass too short (cut off 1/3 or less of existing grass
for best appearance). Mow frequently.
Keep mower and discharge chute clean.
4.
When mowing wet or tall grass, mow the grass twice.5. Raise the mower to the highest setting for the first
pass and then make a second pass to the desired
height.
Use a slow travel speed for trimming purposes.6.
Operate the engine at full throttle for best cutting.7. Mowing with a lower RPM causes the mower to tear
the grass.The engine is designed to be operated at
full speed.
Use the alternate stripe pattern for best lawn
8. appearance.Vary the direction of the stripe each
time the grass is mowed to avoid wear patterns in
the grass.
ADJUSTING CUTTING HEIGHT4.13
The mower deck can be adjusted from a height of 1-1/2
inch to 4-1/2 inches at 1/4-inch intervals. To adjust the
cutting height:
WARNING
DO NOT adjust the cutting height with the mower
bladesrotating.Disengage thepowerto the cutter
blades, put the neutral lock lever in the neutral
position,apply the parking brake and then adjust
cutting height.
Disengage the power to the cutter blades.
1.
Pull on the cutter deck lift lever lever all the way2. backward until it locks in place. See Figure 4-5.
Insert the lanyard pin into the cutting height index
3. at the desired cutting height. Pull backward on the
cutter deck lift lever, push and hold the lock button
See Figure 4-5. Slowly release the cutter deck lift
lever. A deck height decal is located on the cutting
height index as an aid in adjusting the deck to the
desired height.
CUTTER DECK
LIFT LEVER
LANYARD PIN
Adjusting Cutting HeightFigure 4-5.

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Section 5
CONDITION CAUSE CURE
STRINGERS - OCCASIONAL
BLADES OF UNCUT GRASS
Width of Deck
SGB020
Low engine RPM Run engine at full RPM
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
Belts slipping Adjust belt tension
STREAKING - STRIPS OF
UNCUT GRASS IN CUTTING
PATH
Width of Deck
SGB018
Dull, worn blades Sharpen blades
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
Wet grass Cut grass after it has dried out
Bent blades Replace blades
STREAKING - STRIPS OF
UNCUT GRASS BETWEEN
CUTTING PATHS
Width
of
Deck
Width
of
Deck
SGB019
Not enough overlapping between rows Increase the overlap of each pass
TROUBLESHOOTING CUTTING CONDITIONS