THIS MANUAL CONTAINS THE OPERATING
INSTRUCTIONS AND SAFETY INFORMATION FOR YOUR SCAG MOWER. READING
THIS MANUAL CAN PROVIDE YOU WITH
ASSISTANCE IN MAINTENANCE AND ADJUSTMENT PROCEDURES TO KEEP YOUR
MOWER PERFORMING TO MAXIMUM EFFICIENCY. THE SPECIFIC MODELS THAT THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERATING YOUR
MACHINE, PLEASE READ ALL THE INFORMATION ENCLOSED.
PART NUMBER 03085
Page 2
WARNING:
FAILURE TO FOLLOW SAFE OPERATING PRACTICES
MAY RESULT IN SERIOUS INJURY.
* Keep all shields in place, especially the grass discharge chute.
* Before performing any maintenance or service, stop the machine and
remove the spark plug wire and ignition key.
* If a mechanism becomes clogged, stop the engine before cleaning.
* Keep hands, feet and clothing away from power-driven parts.
* Read this manual completely as well as other manuals that came
with your mower.
* Keep others off the tractor (only one person at a time)
REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR!
Hazard control and accident prevention are dependent upon the awareness,
concern, prudence, and proper training of the personnel involved in the
operation, transport, maintenance, and storage of the equipment.
This manual covers the operating instructions
and illustrated parts list for:
SWU36A-15KA with a serial number of 6190001 to 6199999
SWU48A-17KA with a serial number of 6200001 to 6209999
SWU52A-17KA with a serial number of 6210001 to 6219999
Always use the entire serial number listed on the serial number
tag when referring to this product.
Limited Warranty Statement............................................Inside Back Cover
II
Page 5
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.
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.
A replacement Operator's Manual is available from
your Scag Servicing Dealer or by contacting Scag
Power Equipment, Service Department at P.O. Box
152, Mayville, WI 53050. Please indicate the
complete model and serial number of your Scag
product.
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
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 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 on safety decals and throughout this manual that alerts the viewer to the existence
and relative degree of the hazard.
The Right and Left, Front and Rear of the
machine are referenced from the operators perspective when in the normal operating position and
facing the forward travel direction.
GENERAL SAFETY INSTRUCTIONS
READ THIS OPERATOR'S MANUAL and
instructions furnished with attachments.
Perform only those maintenance procedures described
in this manual. If major repairs are ever needed or
assistance is desired, contact an Authorized Scag
Dealer. To ensure optimum performance and safety,
always purchase genuine SCAG replacement parts
and accessories.
Your safety and the safety of others depends
significantly upon your knowledge and
understanding of all correct operating practices and
procedures of this machine.
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 irrepairable 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.
1
Page 6
ISO Symbols
CE Mark
SYMBOLDESCRIPTION
Parking Brake
On/Start
SYMBOLDESCRIPTION
TransmissionChoke
Spinning Blade
48071S
Spring Tension on Idler
Off/Stop
Oil
WARNING
Falling Hazard
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
2
Page 7
SYMBOLDESCRIPTIONSYMBOLDESCRIPTION
SlowFast
481039S
Continuously variable - Linear
Pinch Point
Hourmeter/elapsed operating hours
Cutting element - Basic symbol
Cutting element - Engage
Cutting element - Disengage
Keep bystanders away
Read operator's manual
3
Page 8
BEFORE OPERATING
WHILE OPERATING
1. Know the controls and how to stop quickly.
2. Do not allow children to operate the machine. Do
not allow adults to operate the machine without
proper instruction.
3. Remove all debris or other objects that might be
picked up and thrown by the cutter blades. Keep
all bystanders away from the mowing area.
4. Keep all shields, safety devices, and decals in
place. If a shield, safety device or decal is
defective or damaged, repair or replace it before
operating. Also, check all nuts, bolts and screws
for proper tightness, to assure the machine is in
safe operating condition.
5. Do not operate the machine while wearing sandals, tennis shoes, sneakers or shorts. Also, do
not wear loose fitting clothing which could get
caught in moving parts. Always wear long pants
and substantial shoes. Wearing safety glasses and
safety shoes is advisable and required by some
local ordinances and insurance regulations.
6. Fill the fuel tank with clean, fresh gasoline, with a
minimum octane rating of 87. Avoid spilling
gasoline. Gasoline is highly flammable, handle it
carefully.
A. Use an approved gasoline container.
B. Do not fill the tank while the engine is hot or
running.
C. Do not smoke while handling gasoline.
D. Fill the fuel tank outdoors and up to approxi-
mately 1" (25 mm) below the bottom of the
filler neck.
E. Wipe up any spilled gasoline.
7. Before attempting to start the engine, shift the
transmission into neutral, move the blade engagement switch to the OFF position, and move the
neutral latches to neutral.
1. Start the engine when the neutral latches are in the
neutral lock position, the cutter blades are disengaged, and the transmission is in neutral.
2. Do not run the engine in a confined area without
adequate ventilation. Exhaust fumes are hazardous and could possibly be deadly.
3. Using the machine demands attention. To
prevent loss of control:
A. Mow only in daylight or when there is good
artificial light.
B. Watch for holes or other hidden hazards.
C. Do not drive close to a drop-off, ditch, creek
bank, or other hazard.
D. Reduce speed when making sharp turns and
when turning on hillsides.
E. Always be sure of your footing. Keep a firm
hold on the handles and walk---never run.
F. Do not operate where conditions are slippery.
4. The discharge chute must always be installed and
in the down position on the side discharge cutter
deck except when the Scag optional grass catcher
or mulching plate are properly installed. If the
discharge area should plug, shut the engine off
and wait for all movement to stop before removing the obstruction.
5. Disengage the blades and wait for them to stop
before crossing gravel drives, walks or roads.
6. Shut the engine off and wait until the blades come
to a complete stop before removing the grass
catcher container.
7. Never raise the cutter deck while the blades are
rotating.
8. Always park the mower and/or start the engine on
a level surface.
4
Page 9
9. If the cutting blades should strike a solid object
or the equipment should start to vibrate abnormally, stop the engine, disconnect the spark plug
wire, and check immediately for the cause.
Vibration is generally a warning of trouble.
Check the machine for damaged or defective
parts. Repair any damage before starting the
engine or operating the cutter deck. Be sure the
blades are in good condition and the blade bolts
are tight.
10. Reduce speed and exercise extreme caution on
slopes and in sharp turns to prevent tipping or
loss of control. Be especially cautious when
changing directions on slopes.
WARNING:
DO NOT operate on steep slopes. To check a
slope, attempt to back up it (with the cutter deck
down). If the machine can back up the slope
without the wheels slipping, reduce speed and
use extreme caution. ALWAYS FOLLOW OSHA
APPROVED OPERATION.
11. Do not touch the engine or muffler while the
engine is running or soon after it is stopped.
These areas could be hot enough to cause a burn.
12. Before leaving the operators position or leaving
the mower unattended, shift the transmission into
neutral, place the neutral latches in the neutral
lock position, and move the blade engagement
switch to OFF. Shut the engine OFF and remove
the key.
13. Do not pass or stand on the grass discharge side
of any mower with the engine running. Stop
operation when another person approaches.
14. Use only Scag approved riding attachments.
Scag Approved Riding Attachments:
RS-2
RS-ZT
Using unapproved attachments, (especially "standup" riding attachments) may be hazardous.
MAINTENANCE AND STORAGE
1. Disconnect the spark plug wire from the spark
plug to prevent accidental starting of the engine
when servicing, adjusting or storing the machine.
2. If the mower must be tipped to perform maintenance or adjustment, remove the battery if it has
one, drain the gasoline from the fuel tank and the
oil from the crankcase.
3. To reduce potential fire hazard, keep the engine
free of excessive grease, grass, leaves and
accumulations of dirt.
4. Be sure the machine is in safe operating condition
by keeping nuts, bolts, and screws tight. Check
the blade mounting bolts and nuts frequently to be
sure they are tightened.
5. If the engine must be running to perform a maintenance adjustment, keep hands, feet, clothing and
other parts of the body away from the cutter deck
blades and other moving parts.
6. Do not overspeed the engine by changing governor settings. To be sure of safety and accuracy,
have an authorized dealer check maximum engine
speed with a tachometer.
7. The engine must be shut off before checking the
oil or adding oil to the crankcase.
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
8. Allow the engine to cool before storing the
mower in any enclosure such as a garage or
storage shed. Make sure the fuel tank is empty if
the machine is to be stored in excess of 30 days.
Do not store the mower near any open flame or
where gasoline fumes may be ignited by a spark.
5
Page 10
9. Always store gasoline in a safety-approved, red
container.
10. Be careful when servicing the battery as it contains acid, which is corrosive and could cause
burns to skin and clothing.
MOWER OPERATION
1. Read and understand the safety instructions
before attempting to operate this machine.
2. Before starting the engine:
11. Batteries release explosive gases when being
charged or discharged. Keep batteries away from
any source of sparks and/or flame.
INITIAL RUN-IN PROCEDURES (FIRST
DA Y OF USE OR APPROXIMA TEL Y 10
HOURS)
1. Check the belts for proper tension at 2, 4 and 8
hours. Check for abnormal wear and adjust as
needed.
2. Check the steering control rods for neutral
adjustment. (See Adjustments, page 7)
3. Check the tires for proper pressure.
Caster Wheels25 psi.
Drive Wheels15 psi.
4. Check for loose hardware. Tighten as needed.
5. Check the safety switches for proper adjustment:
* The engine will crank, but not start if the
machine is not in neutral.
* On electric start machines, the engine will
not crank if the PTO switch is on.
* The engine should crank and start if the
machine is in neutral and the PTO
engagement switch is OFF.
6. Apply lubricant to all the grease fittings.
Lubricant was applied at the factory. This is
just a precautionary check to make sure that
all the fittings have been lubricated properly.
* Check the oil level in the engine.
* Fill the fuel tank with clean, fresh, lead-free
gasoline.
* Open the fuel valve on the bottom of the fuel
tank.
-NOTE-
Use gasoline with an octane rating no less than
87.
* The transmission must be in NEUTRAL.
* The blade clutch switch must be in the OFF
position.
* The operator's presence levers must be
released.
* The neutral latches must be in the neutral lock
position.
* The key switch must be on.
3. Start the engine:
* Choke as required. If the engine is cold, pull
the choke knob out. When the engine starts,
slowly push the choke in. If the engine stalls,
repeat the above operation. When the engine
is warm, choking may not be necessary.
4. Engage the cutter blades by pulling the blade
clutch switch into the ON position. Push the
switch to the OFF position to disengage the cutter
blades.
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
390S0138
6
Page 11
-NOTE-
When the PTO is engaged or (possibly) disengaged, a squealing sound from the underside of
the machine is normal. It is caused by the
electric clutch plates meshing as the cutter
blades come up to speed. For best equipment
life, engage the clutch with the engine at 1/2
throttle, not under full load.
TRANSMISSION DRIVE BELT
The transmission drive belt on the SWU belt drive machine
has a spring-loaded idler system and needs no adjustment.
If you find that the transmission slips, see your local Scag
Servicing Dealer for service.
DRIVE CONTROL ADJUSTMENTS
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.
5. Shift the transmission into gear for the desired
mowing speed.
-NOTE-
Top speed is suggested only for transport!
6. While squeezing the steering brake levers with
both hands, release both neutral latches.
7. When the steering brake levers are released, the
machine will travel straight. To make a right
turn, squeeze the RH lever. To turn left, squeeze
the LH lever.
8. TO STOP, squeeze both levers, lock the neutral
latches, and shift the transmission into neutral.
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 1)
NEUTRAL
LATCH
NEUTRAL LOCK
POSITION
DRIVE POSITION
3/4"
STEERING
BRAKE LEVER
SC404GB
Figure 1. Steering Control Rod Adjustment
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.
CUTTER DECK BEL T ADJUSTMENTS
Due to a spring-loaded idler system, there is no adjustment necessary for the cutter deck belts. The 36" cutter
deck has one spring-loaded idler. The 48" cutter deck
has two spring loaded idlers.
"ADJUST-A-GRIP SETTINGS"
"Adjust-A-Grip," with three settings, allows hand force
adjustment in the field, with no tools required. To
operate the "Adjust-A-Grip", pull back on the handle
and move the lever up or down depending on the
amount of belt force needed (See Figure 2, page 8).
7
Page 12
SWU99AG
Figure 2. "Adjust-A-Grip"
Cutting conditions will determine what setting is needed
for the Adjust-A-Grip" and your machine. If the drive
belts slip due to high moisture conditions, the tension may
need to be increased. On the other hand, if the day is
dry and you are cutting on flat terrain the tension may be
decreased. To change the settings:
3. Using the deck handles, lift or lower the deck to the
desired cutting height and reinstall the hairpins. A
deck height decal is located on the deck mounting
frame as an aid in adjusting the deck to the desired
height.
4. Repeat the above process on the other side of the
cutter deck.
Lift deck with
handles only
1. Pull back and move the lever up to reduce tension
on the drive belt.
2. Pull back and move the lever down to increase
tension on the drive belt.
ADJUSTING CUTTING HEIGHT
The mower deck can be adjusted from a height of
1-inch to 4-1/2 inches at 1/2-inch intervals. To adjust the
cutting height:
WARNING:
Do not adjust the cutting height with the mower
blades rotating. Shut off the engine and remove
the ignition key. Bodily injury could occur from
the rotating blades. Lift cutter deck by the handles
only . Do not reach under the cutter deck to lift it.
1. Shut off the engine and remove the ignition key.
Remove Hair Pins
2K SWU DHA
Figure 3. Cutting Height Adjustment
CUTTER BLADES
Do not sharpen beyond 1/3 of the width of the blade.
(See Figure 3)
-NOTE-
Dress the blade with a file. Using a wheel
grinder may burn the blade. Check the balance
of the blade. If blades are out of balance,
vibration and premature wear of spindle assembly can occur. See your authorized Scag dealer
for blade balancing or special tools if you
choose to balance your own blades.
ANGLE BLADE BACK
DO NOT CUT IN
2. Remove the two hairpins from the adjusting pins on
one side of the cutter deck (Figure 3).
X
X MUST NOT EXCEED
30
1/3 BLADE WIDTH
SC4O8G
Figure 4. Blade Sharpening
8
Page 13
LUBRICATION & MAINTENANCE
BREAK-IN
8 HOURS (DAILY)
40 HOURS (WEEKLY)
+ Grease spindle until grease comes out the relief valve.
Compatible Greases:Lidok EP #2 (found at industrial shops)
Ronex MP (Exxon service stations)
Shell Alvania (Shell service stations)
100 HOURS (BIWEEKLY)
PROCEDURE
X
X
XCheck engine oilDo not over fill
XRemove debris from under belt coverMore often if needed
XSharpen cutter bladesMore often if needed
XGrease spindle bearings+ US Lithium MP White Grease 2125
XClean air filterMore often if needed
XCheck belt wear
XCheck tire pressureAdd or adjust as required
XChange engine oilSee engine mfg. information
XReplace air filterMore often if needed
XGrease caster wheel bearingsChassis grease
XGrease caster wheel pivot shaftsChassis grease
XGrease drive wheel bearingsChassis grease
XGrease transmission couplersChassis grease
XGrease idler bracket LH & RHChassis grease
XCheck all hardware for proper tightnessMore often if needed
Check all hardware for proper tightness
Change engine oil and filter at 5 hours
Mobilux #2 (Mobil service stations)
COMMENTS
XAdjust air gap on electric clutchContact your Scag dealer for information about
making this adjustment.
9
Page 14
TROUBLESHOOTING CUTTING CONDITIONS
CONDITION
CAUSE
CURE
Stringers - OccasionalLow engine RPMRun engine at full 3600 RPM
Blades of Uncut
GrassGround speed too fastSlow speed to adjust for conditions
Wet grassCut grass after it has dried out
Dull blades, incorrect sharpeningSharpen blades
Deck plugged, grass accumulationClean underside of deck
Low engine RPMRun engine at full 3600 RPM
Belt slippingAdjust belt tension
Deck plugged, grass accumulationClean underside of deck
Ground speed too fastSlow speed to adjust for conditions
Wet grassCut grass after it has dried out
Width of Deck
SGB018
Bent bladesReplace blades
Streaking - Strips ofNot enough overlappingIncrease the overlap of each
Uncut Grass Betweenbetween rowspass
Cutting Paths
Width
of
Deck
SGB019
Width
of
Deck
10
Page 15
TROUBLESHOOTING CUTTING CONDITIONS
CONDITION
CAUSE
CURE
Uneven Cut on FlatLift worn off of bladeReplace blade
Ground - Wavy
High-LowBlade upside downMount with cutting edge toward
Appearance,ground
Scalloped Cut, or
Rough ContourDeck plugged, grass accumulationClean underside of deck
Too much blade angle (deck pitch)Adjust pitch and level
Deck mounted improperlySee your authorized SCAG dealer
Bent spindle areaSee your authorized SCAG dealer
Dull bladeSharpen blade
Width of Deck
SGB020
Uneven Cut onUneven groundMay need to reduce ground speed,
Uneven Ground -raise cutting height, and/or change
Wavy Appearance,direction of cut
High-Low Scalloped
Cut, or Rough Contour
Width of Deck
SGB021
Sloping Ridge AcrossTire pressures not equalCheck and adjust tire pressure
Width of Cutting Path
Wheels unevenCheck and adjust tire pressure
Deck mounted incorrectlySee your authorized SCAG dealer
Width of Deck
SGB023
11
Page 16
TROUBLESHOOTING CUTTING CONDITIONS
CONDITION
CAUSE
CURE
Scalping - BladesLow tire pressuresCheck and adjust pressures
Hitting Dirt or
Cutting Very Close toGround speed too fastSlow speed to adjust for conditions
the Ground
Cutting too lowMay need to reduce ground speed,
raise cutting height, change direction
of cut, and/or change pitch and level
Rough terrainMay need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Ground speed too fastSlow speed to adjust for conditions
Width of Deck
SGB022
Wet grassCut grass after it has dried out
Step CutBlades not mounted evenlyAdjust pitch and level
Ridge in Center of
Cutting PathBent bladeReplace blade
Internal spindle failureSee your authorized SCAG dealer
Mounting of spindle incorrectSee your authorized SCAG dealer
Width of Deck
SGB024
Slope Cut - SlopingBent spindle mounting areaSee your authorized SCAG dealer
Ridges Across Width
of Cutting PathInternal spindle failureSee your authorized SCAG dealer
Type:Belt drive with twin power belts for increased friction to pulley surface and
"Adjust-A-Grip" traction control lever with three settings
Transmissions:Peerless 5-speed transmission, Model #700-070A with 9 spline coupler shaft
Steering/Travel Control:Clutch/brake fingertip steering, key lock switch. ("Adjust-A-Grip"
design allows minimum hand force to operate controls)
Brakes:6" drum, band brake, one on each wheel.
Axles:1"
Wire Harness:14 gauge wire.
Safety Group:Hand actuated operator presence system with blade clutch and
transmission interlock to engine kill
Forward Speed Range:1.5 to 7.0 mph
Reverse Speed Range:3.0 mph
Date of Issue: October, 2000
Specifications Subject to Change Without Notice
13
Page 18
TECHNICAL SPECIFICA TIONS (CON'T)
CUTTER DECK
Type:Out-front floating design with anti-scalp rollers.
Construction:10-gauge steel reinforced with 7-gauge (3/16") Support plate.
7-gauge (3/16") deck skirt with easy clean-out design.
True Cutting Width:36.0 inches (90.2cm), 48.0 inches (122.0cm)
Blade Engagement:Electric blade engagement clutch with control panel switch
Cutting Height Adjustment:Manual adjustment 1" to 4-1/2" in 1/2" increments
Cutter Blades:.197 Thick Marbane
36" = Two (2) 18" blades
48" = Three (3) 16.5" blades
52" = Three (3) 18" blades
Discharge Opening:36", 48" & 52" = Extra wide 11.5"
Caster Wheels:11 x 4.5-5 smooth-tread flotation, roller bearings with quick pin removal
Spindles:Cast housing, taper roller bearing, low maintenance with top access
grease fitting and grease overfill relief poppet.
Spindle Pulleys:Cast-iron with easily removed taper hubs
Idler Arm:Spring-loaded self adjusting with permanent lubrication
Cutter Deck Belts:B-section with Kevlar® cord.
Fabric Grass Catcher:GC-F4 Grass Catcher with 4 cubic ft. capacity
Metal Grass Catcher:GC-4D Grass Catcher with 4 cubic ft. capacity and rope pull dump or
pickup and dump.
Sulky:RS-2 Two-Wheel Sulky with padded seat.
RS-ZT Two-Wheel Zero-Turn Sulky with padded seat.
Mulch MasterProvides individually baffled chambers with specially designed
deflectors to redistibute grass clippings within the chambers for improved
mulching. Includes serrated "Eliminator" cutter blades featuring
"Double-Cut" edge for high velocity shredding of grass clippings.
APPROXIMATE DIMENSIONSSWU36ASWU48ASWU52A
Length:79.5"74.0"75"
Length with grass catcher:79.5"74.0 "75"
Tracking Width:34.75"34.75"34.75"
Width:48.0"59.0"64"
Width (with discharge chute up):38.0"49. 0"53"
Width with grass catcher:56.0"6 8.0"72"
Height:41.25"41.25"41.25"
Height with grass catcher:41.25"41.25"41.25"
Weight:513 lbs.578 lbs.643 lbs.
Weight with grass catcher:553 lbs.618 lbs.686 lbs.
Date of Issue: October, 2000
Specifications Subject To Change Without Notice
14
Page 19
NOTES
15
Page 20
51
47
46
53
50
61
36" CUTTER DECK
63
62
60
32
34
48
49
59
58
57
56
54
49
51
48
52
50
50
53
45
To"A"
44
41
45
44
42
43
42
55
12
11
16
18
35
50
13
13
34
64
13
17
36
14
15
31
37
38
20
22
24
32
26
28
47
"A"
39
1
2
3
4
5
6
5
7
9
33
8
10
9
19
19A
41
40
39
21
23
25
27
22
16
2001-SWU-CD36
29
30
Page 21
36" CUTTER DECK
Ref. Part
No. NumberDescription
1461363Cutter Deck (Includes Decals)
204017-27Capscrew, 3/8-16 x 1.0"Serrated Flange Hex Hd
3422478Bracket, Anti-Scalp Wheel
404021-05Lock Nut, 3/8-16 Center Lock
548100-15Bushing, 376 ID Oilite
6481632Wheel, Anti-Scalp (Incl. Item 5)
704003-26Bolt, Carriage 3/8-16 x 4.0"
8481838Pin Assy., Deck Adj. (Incl. Items 10 & 11)
943512Spacer, Deck Adjustment Pin
10481539Rod End, Male 3/8-24 RH Thread
1104020-25Nut, 3/8-24 Jam
1246631Spindle Assembly
1304021-10Nut, 5/16-18 Elastic Stop
1404063-08Key,1/4 x 1/4 x 2.0"
1504001-10Bolt, Hex Head 5/16-18 x 1.50"
1643309Spacer, Spindle
1704040-10Flatwasher, 5/8 W
1804001-41Bolt, Hex Head 5/8-11 x 9.50"
19481707Cutter Blade, 18"
19A 48185Cutter Blade, 18" Hi Lift
2043299Spindle Shaft
21481024Seal, Cutter Spindle Top
22481022Tapered Bearing Set (Two Bearings W/Race)
2348114-04Grease Fitting
2448677Relief Fitting, Cutter Spindle
2543294Spindle Housing
2643312Spacer, Outside
2743296Spacer, Inside
28481025Seal, Cutter Spindle Bottom
2943297Spindle Bushing
30481035Nut, Spindle
31422762Belt Cover, LH
32481625-01 Wing Nut, 3/8-16
Ref. Part
No. NumberDescription
3304021-09Nut, 3/8-16 Elastic Stop
3404110-03U-Nut, 3/8-16
3504001-31Bolt, Hex Head 3/8-16 x 2.50"
3643515Pin, Deck Adj. Rear
3704060-08Pin, Sloted Spring 3/16 x 1.50"
3848038Guide, Roller
3904001-12Bolt, Hex Head 5/16-18 x 1.75" Front
3904001-11Bolt, Hex Head 5/16-18 x 1.50" Rear
40451118Roller Shaft
4148926Tapered Hub
4248924Pulley
43481880Belt, Cutter Deck
4404015-14Capscrew, Socket Head. 1/4-20 x 1.375"
4504020-09Hex Nut, 5/8-11
46482245Spring, Chute Return
4704021-10Hex Nut, 5/16-18 Elastic Stop
4804021-09Hex Nut, 3/8-16 Elastic Stop
4904043-04Flatwasher, 3/8 (.938 x .391 x .105) Grade 8
5004019-04Nut, 3/8-16 Serrated Flange
51461291Discharge Chute, Nylon
5204001-51Capscrew, Hex Head 3/8-16 x 3.75"
5304001-136 Capscrew, Hex Head 3/8-16 x 1.50" Grage 8
5443510Pivot, Idler - Long
5504001-62Capscrew, Hex Head 38/16 x 3.25"
56422713Base, Idler Pivot
5704003-04Bolt, Carriage 5/16-18 x 1.0"
58461174Idler Arm Weldment
5948224Ball Bearing
6004001-154 Bolt, Hex Head 5/16-18 x 4.75"
61422763Belt Cover, RH
62481597Spring, Deck Idler
63481962Pulley, Idler
6404030-03Lockwasher, 5/16 (.317 x .586 x .078)
* Common hardware which should be purchased locally. All bolts are Grade 5 plated, all other fasteners zinc plated.
17
Page 22
48" & 52" CUTTER DECKS
14
10
68
55
58
8
8
9
13
59
9
67
18
56
18
17
9
57
"D"
62
61
41
To"B"
To "C"
59
48
60
52
46
53
54
17
18
17
18
"A"
43
1
2
3
18
63
"B"
59
60
18
59
51
64
52
71
46
51
49
71
52
51
50
48
47
46
45
43
44
To "D"
42
70
30
31
4
5
4
6
7
9
10
11
12
13
14
To"A"
8
15
16
18
22
17
9
"C"
19
23
22
20
65
21
24
25
66
29
27
26
2001-SWU-CD48, 52
69
35
41
28
28A
32
33
34
36
37
32
38
39
40
18
Page 23
48" & 52" CUTTER DECKS
Ref. Part
No. No.Description
1461368Cutter Deck With Decals 48"
461373Cutter Deck With Decals 52"
204017-27 Capscrew, 3/8-16 x 1.0" Serrated Flange
304021-05 Lock Nut, 3/8-16 Center Lock
448100-15 Bushing, 376 ID Oilite
5481632Wheel, Anti-Scalp
6422478Bracket, Anti-Scalp Wheel
704003-26 Bolt, Carriage 3/8-16 x 4.0"
804021-09 Hex Nut, 3/8-16 Elastic Stop
904043-04 Flatwasher, 3/8 (.938 x .391 x .105) Grade 8
10 48224Ball Bearings
11 461175Idler Arm RH
12 43503Pivot, Idle - Short
13 04003-04 Bolt, Carriage 5/16-18 x 1.0"
14 422713Base, Idler Pivot
15 04001-31 Capscrew, Hex Head 3/8-16 x 2.50"
16 04001-45 Capscrew, Hex Head 3/8-16 x 2.0"
17 0 4001-136 Capscrew, Hex Head 3/8-16 x 1.50" Grade 8
18 04019-04 Nut, 3/8-16 Serrated Flange
19 48181Pulley, Idler
20 481838Pin Assembly (Incl. 21 & 23)
21 04020-25 Nut, 3/8-24 Jam
22 43512Spacer, Deck Adjustment Pin
23 481539Rod End, Male 3/8-24
24 46631Spindle Assembly
25 43309Spacer, Spindle
26 04001-41 Bolt,Hex Head 5/8-11 x 9.50"
27 04040-10 Flatwasher, 5/8 W
28 481706Cutter Blade 16-1/2" 48"
28 481707Cutter Blade 18" 52"
28A 481710Cutter Blade 16-1/2" Hi Lift 48"
28A 481711Cutter Blade 18" Hi Lift 52"
29 04001-10 Bolt, Hex Head 5/16-18 x 1.50"
30 43298Spindle Shaft
31 481024Seal, Cutter Spindle - Top
32 481022Tapered Bearings (Two)
33 48114-04 Grease Fitting
34 4 329 4Spindle Housing
Ref. Part
No. No.Description
35 4 8 6 7 7Relief Fitting, Cutter Spindle
36 43312Spacer Outside
37 43296Spacer, Inside
38 481025Seal, Cutter Spindle - Bottom
39 43297Spindle Bushing
40 481035Nut, Spindle
41 481625-01 Wing Nut, 3/8-16
42 451118Roller Shaft
43 04001-12 Bolt, Hex Head 5/16-18 x 1.0" Front
43 04001-11 Bolt, Hex Head 5/16-18 x 1.50" Rear
44 04060-08 Pin, Slotted Spring 3/16 x 1.50"
45 43515Pin, Deck Adjustment Rear
46 48926Tapered Hub
47 48038Guide, Roller
48 48924Pulley
49 4 8923Pulley, 5.75 Double Groove
50 481922Belt, Deck Drive
51 04015-14 Capscrew, Socket Head 1/4-20 x 1.375"
52 04020-09 Hex Nut, 5/8-11
53 4 8087Belt, RH Blade Drive 48"
53 4 8285Belt, RH Blade Drive 52"
54 422745Belt Cover, RH
55 04001-62 Capscrew, Hex Head 3/8-16 x 3.25"
56 461174Idler Arm Weldment
57 04001-51 Capscrew, Hex Head 3/8-16 x 3.75"
58 461291Discharge Chute, Nylon
59 04019-03 Nut, 5/16-18 Serrated Flange
60 481597Spring, Deck Idler
61 04001-154 Bolt, Hex Head 5/16-18 x 4.75"
62 482245Spring, Chute Return
63 04021-09 Nut, 3/8-16 Elastic Stop
64 04021-10 Nut, 5/16-18 Elastic Stop
65 04001-31 Bolt, Hex Head 3/8-16 x 2.50"
66 04063-08 Key, 1/4 x 1/4 x 2.0"
67 481962Pulley, Idler
68 43510Pivot, Idler - Long
69 422744Belt Cover LH
70 04110-03 U-Nut, 3/8-16
71 04030-03 Lockwasher, 5/16 (.317 x .586 x .078)
* Common hardware which should be purchased locally. All bolts are Grade 5 plated, all other fasteners zinc plated.
19
Page 24
36" DECK FRAME
36" Deck Frame
1
2
3
5
4
12
14
6
30
28
22
4
7
9
8
11
10
7
13
24
16
17
18
27
26
25
19
15
29
20
23
20
21
17
SWU99DF36
Page 25
36" DECK FRAME
Ref. Part
No. No.Description
1461170Belt Cover With Decal
2481625-01 Knob With Stud
304029-03 Knob, Deck Cover Mounting
448100-08 Bushing, Caster
5451097Frame Weldment, Deck Mounting - 36"
604062-04 Hair Pin Cotter, .177 x 3.25"
748114-04 Grease Fitting Str. 1/4-28 Self Tap
804066-01 Quick Pin .438 Dia
904024-02 Nut, Push-On - 3/8 Thd.
10 04041-07 Flatwasher, 3/8 - (.391 x .938 x .105)
11 04019-04 Nut, 3/8-16 Serrated Flange Hex Head
12 45325Yoke, Caster Wheel
13 04001-80 Capscrew, Hex Head 1/2-13 x 6.50"
14 04021-07 Locknut, 1/2-13 Elastic Stop
15 481843Wheel Assembly, Caster
16 481845Tire, 11 x 4.00-5
17 481770Retainer
18 481846Roller Bearing
19 481844Rim, 5.0 x 2.75 With Zerk & Valve
20 48114-05 Grease Fitting Str.1/4-28
21 481769Roller Bearing .625 x 3.25"
22 04001-46 Capscrew, Hex Head 3/8-16 x 2.25"
23 **Tire Valve, Purchase Locally
24 04050-16 Retaining Ring 1.50 Ext.
25 43530Bushing, Deck Adjustment Pin
26 04017-42 Capscrew, Hex Head 7/16-14 x 1.0"
27 04019-05 Nut, 7/16-14 Serrated Flange Hex
28 04110-03 U-Nut, 3/8-16
29 4 3511Sleeve, Caster Wheel
30 04040-10 Flatwasher, 5/8 - (.688 x 1.75 x .134)
* Common hardware which should be purchased locally. All bolts are Grade 5 plated, all other fasteners zinc plated.
** Purchase Locally.
21
Page 26
48" Deck Frame
48" & 52" DECK FRAME
1
2
3
22
26
11
13
4
5
4
6
7
29
8
12
30
27
28
10
9
6
16
17
18
19
25
24
23
14
15
22
21
20
16
SWU99DF48
Page 27
48" & 52" DECK FRAME
Ref. Part
No. No.Description
1461171Belt Cover With Decal - 48"
1461279Belt Cover With Decal - 52"
2481625-01 Knob With Stud
304029-03Knob, Deck Cover Mounting
448100-08Bushing, Caster
5451098Frame Weldment, Deck Mounting - 48"
5451155Frame Weldment, Deck Mounting - 52"
648114-04 Grease Fitting Str. 1/4-28 Self Tap
704066-01Quick Pin,.438 Dia
804024-02Nut, Push-On - 3/8 Thd.
904041-07 Flatwasher, 3/8 (.391 x .938 x .105)
10 04019-04Nut, 3/8-16 Serrated Flange Hex Head
11 45325Yoke, Caster Wheel
12 04001-80Capscrew, Hex Head 1/2-13 x 6.50"
13 04021-07Locknut, 1/2-13 Elastic Stop
14 481843Wheel Assembly, Caster
15 481845Tire, 11 x 4.00-5
16 481770Retainer
17 481846Roller Bearing
18 481844Rim, 5.0 x 2.75 With Zerk & Valve
19 48114-05Grease Fitting Str.1/4-28
20 481769Roler Bearing .625 x 3.25"
21 *Tire Valve, Purchase Locally
22 04062-04 Hair Pin Cotter, .177 x 3.25"
23 04050-16Retaining Ring 1.50 Ext.
24 43530Bushing, Deck Adjustment Pin
25 04017-42Capscrew, Hex Head 7/16-14 x 1.0"
26 04019-05Nut, 7/16-14 Serrated Flange Hex
27 04110-03U-Nut, 3/8-16
28 04001-46Capscrew, Hex Head 3/8-16 x 2.25"
29 435 11Sleeve, Caster Wheel
30 04040-10 Flatwasher, 5/8 - (.688 x 1.75 x .134)
* Common hardware which should be purchased locally. All bolts are Grade 5 plated, all other fasteners zinc plated.
Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgment
of Scag, to be defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealer
without charge for parts and labor. This warranty is limited to the original purchaser and is not transferable. Proof of
purchase will be required by the dealer to substantiate any warranty claims. All warranty work must be performed by an
Authorized Scag Service Dealer.
This warranty is limited to the following specified periods from the date of the original retail purchase for defects in
materials or workmanship:
* Wear items including drive belts, blades, hydraulic hoses and tires are warranted for ninety (90) days.
* Batteries are covered for ninety (90) days.
* Frame and structural components including oil reservoir, fittings, and oil coolers are warranted for 1 year.
* Cutter decks are warranted against cracking for a period of three (3) years. (Parts and labor 1st year; Parts
only 2nd and 3rd year.) The repair or replacement of the cutter deck will be at the option of Scag Power
Equipment. We reserve the right to request components for evaluation. This warranty does not cover any
mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in any way
contrary to the operating instructions as specified in the Operators Manual.
* Engines and electric starters are covered by the engine manufacturers warranty period.
* Major drive system components (hydraulic pumps and hydraulic motors only) are warranted for two (2)
years by Scag Power Equipment. (Parts and labor 1st year; Parts only 2nd year.) (Two year warranty excludes
fittings, hoses, cooling system, oil reservoir, drive belts, transaxles). The repair or replacement of the
hydraulic pump or hydraulic motor will be at the option of Scag Power Equipment. This warranty does not
cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in
any way contrary to the operating instructions as specified in the Operators Manual.
* Electric clutches have a Limited Warranty for 2 year (Parts and labor 1st year; Parts only 2nd year).
* Cutter Spindle Assemblies 46631 have a Limited Warranty for three years (Parts and labor 1st year; Parts
only 2nd and 3rd year).
* Any Scag product used for rental purposes is covered by a 90 day warranty.
The Scag mower, including any defective part must be returned to an Authorized Scag Service Dealer within the warranty
period. The expense of delivering the mower to the dealer for warranty work and the expense of returning it to the owner
after repair will be paid for by the owner. Scags responsibility is limited to making the required repairs and no claim of
breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Scag mower.
This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has
been operated in any way contrary to the operating instructions as specified in the Operators Manual. The warranty
does not apply to any damage to the mower that is the result of improper maintenance, or to any mower or parts that have
not been assembled or installed as specified in the Operators Manual and Assembly Manual. The warranty does not
cover any mower that has been altered or modified, changing performance or durability. In addition, the warranty does not
extend to repairs made necessary by normal wear, or by the use of parts or accessories which, in the reasonable judgment
of Scag, are either incompatible with the Scag mower or adversely affect its operation, performance or durability.
Scag Power Equipment reserves the right to change or improve the design of any mower without assuming any obligation to modify any mower previously manufactured. All other implied warranties are limited in duration to the one (1) year
warranty period or ninety (90) days for mowers used for rental purpose. Accordingly, any such implied warranties
including merchantability, fitness for a particular purpose, or otherwise, are disclaimed in their entirety after the expiration
of the appropriate one year or ninety day warranty period. Scags obligation under this warranty is strictly and exclusively
limited to the repair or replacement of defective parts and Scag does not assume or authorize anyone to assume for them
any other obligation. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation
may not apply to you.
Scag assumes no responsibility for incidental, consequential or other damages including, but not limited to, expense for
gasoline, expense of delivering the mower to an Authorized Scag Service Dealer and expense of returning it to the owner,
mechanics travel time, telephone or telegram charges, rental of a like product during the time warranty repairs are being
performed, travel, loss or damage to personal property, loss of revenue, loss of use of the mower, loss of time or inconvenience. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.