Briggs & Stratton SZC User Manual
MODEL SZC
OPERATOR’S MANUAL
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 THA T THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERA TING YOUR
MACHINE, PLEASE READ ALL THE INFORMATION ENCLOSED.
© 2005
SCAG POWER EQUIPMENT
DIVISION OF MET ALCRAFT OF MA YVILLE, INC.
P ART NO. 03169
PRINTED 8/05
PRINTED IN USA
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:
SZC36A-16HN with a serial number of B3900001 to B3999999
SZC36A-17KAI with a serial number of B4000001 to B4099999
SZC36A-19KAI with a serial number of B4100001 to B4199999
SZC42A-19KAI with a serial number of B4400001 to B4499999
SMZC-36A with a serial number of B4600001 to B4699999
SMZC-42A with a serial number of B4700001 to B4799999
Always use the entire serial number listed on the serial number
tag when referring to this product.
TABLE OF CONTENTS
SUBJECT PAGE
Section 1 - General Information
1.1 Introduction .............................................................................................................................1
1.2 Directional Reference .............................................................................................................1
1.3 Servicing the Engine and Drive Train Components ................................................................1
1.3 Symbols ............................................................................................................................... 2-3
Section 2 - Safety Information
2.1 Introduction .............................................................................................................................4
2.2 Signal W ords ...........................................................................................................................4
2.3 Before Operation Considerations ...........................................................................................4
2.4 Operation Considerations ........................................................................................................5
2.5 Roll Over Protection System (Optional) .................................................................................7
2.6 Maintenance Considerations ...................................................................................................9
2.7 Safety and Instructional Decals ............................................................................................10
Section 3 - Specifications ....................................................................................................11-12
Section 4 - Operating Instructions
4.1 Controls and Instrument Identification..................................................................................13
4.2 Safety Interlock System ........................................................................................................14
4.3 Initial Run-In Procedures ......................................................................................................15
4.4 Starting the Engine................................................................................................................15
4.5 Ground Travel and Steering ..................................................................................................15
4.6 Engaging the Deck Drive .....................................................................................................16
4.7 Hillside Operation .................................................................................................................17
4.8 Parking the Mower ...............................................................................................................17
4.9 After Operation ....................................................................................................................17
4.10 Removing Clogged Material .................................................................................................18
4.1 1 Moving Mower with Engine Stopped ...................................................................................18
4.12 Recommendations for Mowing .............................................................................................18
4.13 Adjusting Cutting Height.......................................................................................................18
4.14 Adjusting the Steering Levers...............................................................................................19
Section 5 - Troubleshooting Cutting Conditions .............................................................. 20-22
I
TABLE OF CONTENTS (CONT'D)
SUBJECT PAGE
Section 6 - Adjustments
6.1 Parking Brake Adjustment....................................................................................................23
6.2 Travel Adjustments ...............................................................................................................24
6.3 Throttle Control and Choke Adjustments..............................................................................25
6.4 Belt Adjustment ....................................................................................................................25
6.5 Belt Alignment ......................................................................................................................25
6.6 Cutter Deck Adjustments .....................................................................................................26
Section 7 - Maintenance
7.1 Maintenance Chart ...............................................................................................................29
7.2 Lubrication Fitting Points ......................................................................................................30
7.3 Hydraulic System..................................................................................................................32
7.4 Engine Oil .............................................................................................................................33
7.5 Engine Fuel System ..............................................................................................................33
7.6 Engine Air Cleaner................................................................................................................34
7.7 Battery ..................................................................................................................................34
7.8 Drive Belts ............................................................................................................................36
7.9 Cutter Blades ........................................................................................................................36
7.10 Tires ......................................................................................................................................37
7.11 Body , Deck and Upholstery..................................................................................................37
Section 8 - Replacement Parts
SZWC36A, 42A Cutter Deck .................................................................................................. 38-39
Cutter Deck Controls................................................................................................................ 40-41
Sheet Metal Components.......................................................................................................... 42-43
SZC Roll Over Protection System............................................................................................ 44-45
Drive System Components ....................................................................................................... 46-47
Engine and Attaching Parts ...................................................................................................... 48-49
Steering Components ................................................................................................................ 50-51
Brake Components ................................................................................................................... 52-53
Fuel and Hydraulic System ....................................................................................................... 54-55
Electrical System ...................................................................................................................... 56-57
Hydraulic Pump (BDP-10A) .................................................................................................... 48-59
Replacement Decals ................................................................................................................. 60-61
Electrical Schematic .......................................................................................................................62
Warranty Statement ............................................................................................. Inside Back Cover
II
Section 1
GENERAL INFORMATION
1.1 INTRODUCTION
Your mower was built to the highest standards in the
industry. However, the prolonged life and maximum
efficiency of your mower depends on you following the
operating, maintenance and adjustment instructions in this
manual.
If additional information or service is needed, contact your
Scag Power Equipment Dealer.
We encourage you to contact your dealer for repairs. All
Scag dealers are informed of the latest methods to service
this equipment and provide prompt and efficient service in
the field or at their service shop. They carry a full line of
Scag service parts.
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
Scag approved attachments and accessories:
GC-4D (p/n 9054)
GC-4F (p/n 9055)
Mulch Plate (p/n 9281, 9282)
Blade Buddy (p/n 9212)
STC Lights (p/n 9274)
WARNING:
For pictorial clarity , some illustrations and figures
in this manual may show shields, guards or plates
open or removed. Under no circumstances should
your mower be operated without these devices in
place.
All information is based upon product information
available at the time of approval for printing. Scag
Power Equipment reserves the right to make changes
at any time without notice and without incurring any
obligation.
When ordering parts, always give the model and serial
number of your tractor. The serial number plate is located
under the seat as shown in Figure 1-1.
SERIAL NUMBER
PLATE LOCATION
Figure 1-1 T ractor Serial Number Plate Location
USE ONLY SCAG APPROVED ATTACHMENTS
AND ACCESSORIES.
1.2 DIRECTION REFERENCE
The “Right” and “Left”, “Front” and “Rear” of the machine
are referenced from the operator’s right and left when
seated in the normal operating position and facing the
forward travel direction.
1.3 SERVICING THE ENGINE AND DRIVE
TRAIN COMPONENTS
The detail servicing and repair of the engine and hydraulic
pumps 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.
components during the warranty period may void your
warranty.
Any unauthorized work done on these
Attachments and accessories manufactured by companies
other than Scag Power Equipment are not approved for use
on this machine.
1
Section 1
ISO Symbols
SYMBOL DESCRIPTION
Parking Brake
CE Mark
SYMBOL DESCRIPTION
TransmissionChoke
Spinning Blade
48071S
On/Start
Off/Stop
Falling Hazard
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
Spring T ension on Idler
Oil
Thown Object Hazard
2
Section 1
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
481039S
Fast
Continuously V ariable - Linear
Pinch Point
Slow
Cutting Element - Basic symbol
Cutting Element - Engage
Hourmeter/Elapsed Operating Hours
Thown Object Hazard
Keep Bystanders Away
Cutting Element - Disengage
Read Operator's Manual
3
2.1 INTRODUCTION
Section 2
SAFETY INFORMATION
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.
and thoroughly familiar with all of the controls before
operating the mower. The owner/user can prevent and is
responsible for accidents or injuries occuring to
themselves, other people or property .
READ THIS OPERATOR’S MANUAL BEFORE
ATTEMPTING TO START YOUR MOWER.
A replacement manual is available from your authorized
Scag Service Dealer or by contacting Scag Power
Equipment, Service Department at P.O. Box 152,
Mayville, WI 53050 or via the Internet at
www.scag.com. The manual for your 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.
Make sure every operator is properly trained
2.2 SIGNAL WORDS
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.
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
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 . T o
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.
1. NEVER allow children to operate this riding mower.
Do not allow adults to operate this machine without
proper instructions.
2. DO NOT mow when children and/or others are
present. Keep children out of the mowing area and
in the watchful care of a responsible adult other than
the operator. Be alert and turn machine off if a child
enters the area.
3. Clear the area to be mowed of objects that could be
picked up and thrown by the cutter blades.
4. DO NOT carry passengers.
5. DO NOT operate the machine under the influence
of alcohol or drugs.
4
Section 2
2.3 BEFORE OPERATION
CONSIDERATIONS (CONT'D)
6. If the operator(s) or mechanic(s) cannot read English
or Spanish, it is the owner's responsibility to explain
this material to them.
7. DO NOT wear loose fitting clothing. Loose
clothing, jewelry or long hair could get tangled in
moving parts. Do not operate the machine wearing
shorts; always wear adequate protective clothing
including long pants. Wearing safety glasses, safety
shoes and a helmet is advisable and is required by
some local ordinances and insurance regulations.
8. Operator hearing protection is recommended,
particularly for continuous operation of the mower.
W ear suitable hearing protection. Prolonged
exposure to loud noise can cause hearing
impairment or loss.
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.
12. DO NOT add fuel to a running or hot engine. Allow
the engine to cool for several minutes before adding
fuel.
13. Keep flammable objects (cigarettes, matches, etc.),
open flames and sparks away from the fuel tank and
fuel container.
14. Equipment must comply with the latest requirements
per SAE J137 and/or ANSI/ASAE S279 when
driven on public roads.
-NOTE-
If the mower is driven on public roads, it must
comply with state and local ordinances as well as
SAE J137 and/or ANSI / ASAE S279
requirements. Contact your local authorities for
regulations and equipment requirements.
15. DO NOT operate without the side discharge chute
installed and in the down position or with an optional
grass catcher or mulch plate completely installed.
16. Check the blade mounting bolts at frequent intervals
for proper tightness.
WARNING:
This machine is equipped with an interlock system
intended to protect the operator and others from
injury. This is accomplished by preventing the
engine from starting unless the deck drive is
disengaged, the parking brake is on, the steering
control levers are in the neutral position and the
operator is in the seat. The system shuts off the
engine if the operator leaves the seat with the deck
drive engaged and/or the steering control levers are
not in the neutral postion and/or the parking brake
is not engaged. Never operate equipment with the
interlock system disconnected or malfunctioning.
10. Be sure the interlock switches are functioning
correctly.
1 1. 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.
17. Make sure all hydraulic fluid connections are tight
and all hydraulic hoses and lines are in good condition
before starting the machine.
2.4 OPERATION CONSIDERATIONS
1. Know the function of all controls and how to stop
quickly.
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.
WARNING:
DO NOT operate on steep slopes. T o 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.
5
Section 2
2.4 OPERATION CONSIDERATIONS
(CONT'D)
3. To prevent tipping or loss of control, start and stop
smoothly , avoid unnecessary turns and travel at reduced
speed.
4. When using any attachment, never direct the discharge
of material toward bystanders or allow anyone near
the machine while in operation.
5. Before attempting to start the engine, with the operator
in the seat, disengage power to the cutter deck, place
the steering control levers in the neutral position and
engage the parking brake.
6. If the mower discharge ever plugs, shut off the engine,
remove the ignition key , and wait for all movement to
stop before removing the obstruction.
WARNING:
12. NEVER raise the deck with the blades engaged.
13. Take all possible precautions when leaving the machine
unattended, such as disengaging the mower, lowering
the attachments, setting the parking brake, stopping the
engine, and removing the key.
14. Disengage power to the attachments when transporting
or when not in use.
15. The machine and attachments should be stopped and
inspected for damage after striking a foreign object,
and damage should be repaired before restarting and
operating the machine.
CAUTION:
DO NOT touch the engine or the muffler while
the engine is running or immediately after
stopping. These areas may be hot enough to
cause a burn.
DO NOT use your hand to dislodge the clogged
discharge chute. Use a stick or other device to
remove clogged material.
7. Be alert for holes, rocks, roots and other hidden hazards
in the terrain. Keep away from any dropoff. Beware
of overhead obstructions (low limbs, etc.) and
underground obstacles (sprinklers, pipes, tree roots,
etc.). Cautiously enter a new area. Be alert for hidden
hazards.
8. Disengage power to cutter deck before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area behind
the mower.
9. DO NOT turn sharply. Use care when backing up.
10. Disengage power to cutter deck before crossing roads,
walks or gravel drives.
WARNING:
DO NOT run the engine inside a building or a
confined area without proper ventilation. Exhaust
fumes are hazardous and could cause death.
16. Keep hands and feet away from cutter blades and
moving parts. Contact can injure.
17. Use care when loading or unloading the machine onto
a trailer or truck.
18. Use care when approaching blind corners, shrubs, trees,
or other objects that may obscure vision.
11 . Mow only in daylight or good artificial light.
6
Section 2
2.5 ROLL-OVER PROTECTION SYSTEM
WARNING:
Keep the roll bar in the raised and locked
position and the seat belt securely fastened
during operation. Failure to do so could
cause serious injury or loss of life.
This mower has been designed for good traction and
stability under normal mowing conditions. However,
caution must be used when traveling on slopes, especially
when the grass is wet. Do not mow on wet grass. Wet
grass reduces traction and steering control.
Any or all parts of the Roll-Over Protection System MUST
NOT be removed. Failure to adhere to this guideline could
result in injury or death.
WARNING:
Lower the roll bar only when absolutely necessary .
1. T o lower the roll bar, loosen the tension knob on both
the left hand and right hand bar. See Figure 2-1.
2. Remove the hairpin cotter pins and remove the (2) two
lock pins. See Figure 2-2.
3. Lower the roll bar to the down position.
4. Attach the seat belt to the retainer brackets as shown
in Figure 2-3, page 8. The seat belt should only be
attached to the retainer brackets when the roll bar is in
the down position.
5. T o raise the roll bar , lift the bar to the upright position.
6. Install the two (2) lock pins through the hole, secure
with the two (2) hairpin cotter pins and tighten the
tension knobs. See Figure 2-2. Remove the seat belt
from the retainer brackets.
UPRIGHT AND
LOCKED POSITION
There is no roll-over protection when the roll bar is
in the down position.
Lower the roll bar only when absolutely
necessary.
DO NOT wear the seat belt when the roll bar is
in the down position.
ALWAYS wear seat belt when roll bar is in the
up position.
Operate the machine smoothly, no sudden turns,
starts or stops.
Raise the roll bar as soon as clearance permits.
Check the area carefully before mowing for proper
overhead clearance (i.e. branches, doorways, etc.).
TENSION
KNOBS
Figure 2-1 Foldable Roll-Over Protection System
HAIR PIN
TENSION
LOCK PIN
KNOB
DO NOT contact any overhead object with the roll
bar.
Figure 2-2 ROPS Hinge
7
Section 2
3. Check the buckle and latch for proper operation and
determine if the latch plate is excessively worn,
deformed, or if the buckle is damaged or cracked. See
Figure 2-4.
SEAT BELT
RETAINER
BRACKET
RETAINER
BRACKET
SEAT BELT
Figure 2-3 Seat Belt Retainer Brackets
The potential exposure of the seat belt to severe
enviromental conditions make it crucial to inspect the seat
belt system regularly .
It is recommended that the seat belt be inspected on a
daily basis for signs of damage. Any seat belt system that
shows cuts, fraying, extreme or unusual wear, significant
discoloration due to UV exposure, dirt or stiffness, abrasion
to the seat belt webbing, or damage to the buckle, latch
plate, hardware or any other obvious problem should be
replaced immediately.
WARNING:
INSPECT BUCKLE
& LATCH
INSPECT WEBBING
Figure 2-4 Seat Belt Inspection
WARNING:
Reduce speed when turning, operating on slopes,
slick or wet surfaces. Allow extra distance to stop.
Stay off of slopes too steep for safe operation. To
check a slope, attempt to back up it (with the cutter
deck down). If the machine can not back up the
slope without the wheels slipping, do not operate
the machine on this slope.
ALWAYS travel up or down the slope whenever
possible. Never across the slope.
DO NOT mow near drop-offs, ditches or
embankments. The machine could suddenly roll
over if a wheel goes over the edge or if the edge
caves in.
Failure to properly inspect and maintain the
seat belt can cause serious injury or loss of
life.
1. Check the full length of the seat belt webbing for cuts,
wear, fraying, dirt and stiffness. See Figure 2-4.
2. Check the seat belt webbing in areas exposed to ultra
violet rays from the sun or extreme dust or dirt. If the
original color of the webbing in these areas is extremely
faded and/or is packed with dirt, the physical strength
of this webbing may have deteriorated. If this condition
exists, replace the seat belt system.
Operate the machine smoothly, no sudden turns,
starts or stops on a slope.
NEVER tow on slopes. The weight of the towed
equipment may cause loss of traction and loss of
control.
DO NOT permit untrained personnel to operate
the machine.
8
Section 2
2.6 MAINTENANCE CONSIDERATIONS &
STORAGE
1. Never make adjustments to the machine with the
engine running unless specifically instructed to do so.
If the engine is running, keep hands, feet, and
clothing away from moving parts.
2. Disengage drives, lower implement, set parking
brake, stop engine and remove key or disconnect
spark plug wire to prevent accidental starting of the
engine when servicing or adjusting the machine.
W ait for all movement to stop before adjusting,
cleaning or repairing.
3. Disconnect battery or remove spark plug wire before
making any repairs. Disconnect the negative
terminal first and the positive last. Reconnect the
positive first and the negative last.
4. Keep all nuts, bolts and screws tight, to ensure the
machine is in safe working condition. Check blade
mounting bolts frequently to be sure they are tight.
11. Use jack stands to support components when
required.
12. Carefully release pressure from components with
stored energy.
WARNING:
Hydraulic fluid is under high pressure. Keep
body and hands away from pinholes or nozzles
that eject hydraulic fluid under high pressure.
If you need service on your hydraulic system,
please see your authorized Scag dealer. If
hydraulic fluid is injected into the skin, it must
be surgically removed within a few hours by a
doctor or gangrene may result.
13. Let the engine cool before storing.
14. DO NOT store the machine near an open flame.
15. Shut off fuel while storing or transporting.
5. Do not change the engine governor settings or
overspeed the engine. See the engine operator's
manual for information on engine settings.
6. T o reduce fire hazard, keep the cutting units, drives
muffler and engine free of grass, leaves, excessive
grease, oil and dirt.
7. Park the machine on level ground and engage the
parking brake.
8. NEVER allow untrained personnel to service the
machine.
9. Use care when checking blades. Wrap the blade(s)
or wear gloves and use caution when servicing
blades. Only replace blades. NEVER straighten or
weld blades.
10. Keep all parts in good working condition. Replace all
worn or damaged decals.
16. DO NOT store fuel near flames or drain indoors.
17. Charge batteries in an open well ventilated area,
away from spark and flames. Unplug charger before
connecting or disconnecting from battery . Wear
protective clothing and use insulated tools.
9
2.7 SAFETY AND INSTRUCTIONAL DECALS
483206
Section 2
481039
482100
483023
482286
482290
482291
10
483061
2006 SZC Safety Decals
Section 3
SPECIFICATIONS
3.1 ENGINE
General T ype .............................................................................. Heavy Duty Industrial/Commercial Gasoline
Brand ......................................................................................... Kawasaki, Honda, Briggs & Stratton
Horsepower................................................................................ 16HP (Spec. #) (Scag Model SZC36A-16HN)
17HP (Spec.#) (Scag Model SZC36A-17KAI)
19HP (Spec. #) (Scag Model SZC36A-19KAI, SZC42A-19KAI)
T ype 4-Cycle Gasoline, T win Cylinder, V ertical Shaft
Cylinders.................................................................................... 2 with Cast-Iron Sleeves
Governor .................................................................................... Mechanical Type with V ariable Speed Control Set At 3600 RPM
Idle Speed .................................................................................. 1550 RPM - Kawasaki
Fuel Pump Group ....................................................................... Pulse Fuel Pump with In-Line Fuel Filter, Fixed Jet Carburetor.
Fuel ............................................................................................ Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump Group .......................................................................... Positive Displacement Gerotor™ Oil Pump
Starter......................................................................................... Electric Starting with Solenoid Shift Starter
Belts: .......................................................................................... Kevlar cord. Self-adjusting, Self-tightening
Pump Drive Belt ......................................................................... Scag Part Number - 483000
3.2 ELECTRICAL
Battery ....................................................................................... 12 V ol t
Charging System........................................................................ Alternator
Charging Output ........................................................................ 12 Volt, 13 Amp - Kawasaki
System Polarity .......................................................................... Negative Ground
Starter......................................................................................... 12 V olt Electric Ring Gear T ype, Key and Solenoid Operated Interlock
Switches..................................................................................... Seat, Neutral Control, Mower Engagement (BBC), Parking Brake
Instrument Panel ........................................................................ Key Switch, Throttle Lever, Manual Choke, PTO Switch
Fuses ......................................................................................... Two (2) 20 Amp
3.3 TRACT OR
Drive System.............................................................................. Hydraulic Drive with Two Variable Displacement Pumps and T wo
Cast-iron High Torque Motors
Hydrostatic Pumps .................................................................... Two Hydro-Gear™ BDP 10A Pumps with Dump V alves for
movement without running the engine
Drive Wheel Motors .................................................................. Two Hydro-Gear™ Cast-Iron High T orque Motors
Steering/Travel Control.............................................................. Twin Lever Fingertip Steering Control with Individual Control to
Each Wheel with Gas Spring Dampers
Parking Brake ............................................................................. Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster...................................................................... 11 X 4-5 Four-Ply w/tapered roller bearing pivots
(2) Drive - (48"-52" Deck) ...................................................... 23 X 8.50 X 12 (SZC36A) 23 X 9.50 X 12 (SZC42A)
................................................................................................... Four-Ply Pneumatic Tubeless, Radius Edge
Fuel Tanks.................................................................................. Dual 2.5-Gallon Seamless Polyethylene T anks with large opening ,
Fuel Cap and molded in cup holder
Tire Pressure:
Front Caster........................................................................... Flat Free
Drive ...................................................................................... 12 PS I
Seat ............................................................................................ Molded, Cushioned
11
Section 3
3.3 TRACT OR (CONT'D)
Travel Speed:
Forward ................................................................................. 0-7.5 MPH
Reverse.................................................................................. 0-5 MPH
3.4 CUTTER DECK
Type:.......................................................................................... Floating, Adjustable, Anti-scalping, Hybrid Design Combines
Out-front and Belly-mount Designs
Construction: ............................................................................. Dual-plate deck construction, top of deck consists of two steel
................................................................................................... plates 10-gauge and 7 gauge, 7-gauge (3/16") deck skirt.
True Cutting Width:................................................................... 36" (91.44 cm), 42" (106.68 cm)
Cutting Height Adjustment: ....................................................... Foot Operated Lever Adjustment from Operator's Seat, 1.50" to
5.5" in 1/4"increments
Cutter Blades:............................................................................. 197 Thick, Milled Edge, Wear Resistant Marbain™
Blade Engagement: ................................................................... Electric Blade Engagement Clutch with Control Panel Switch
Connected to the Cutter Deck through a Belt.
Discharge Opening: ................................................................... Extra Wide Discharge Opening with Spring Loaded Discharge
Chute and Turbo Baffle
Spindles: .................................................................................... Heavy-duty 1-1/8" Top Dimension Spindle Shaft, Cast Housing,
Taper Roller Bearing, Low Maintenance with Top Access Grease
Fitting and Grease Overfill Relief Poppet
Spindle Pulleys:.......................................................................... Cast Iron (SZC36A), Split Steel (SZC42A) with Easily Removed
................................................................................................... Taper Hubs
Cutter Deck Belts: ...................................................................... B-section with Kevlar Cord. Self-adjusting, self-tightening
SMZC36 ................................................................................ Scag Part Numbers - 483001
SMZC42 ................................................................................ Scag Part Numbers - 483002
Electric Clutch T ype ................................................................... Ogura Heavy Duty PTO Clutch Brake
-NOTE-
The machine will travel at 7.5 mph for
transport purposes. For best cutting
performance the forward travel speed
should be adjusted depending upon the
cutting conditions.
3.6 HYDRAULIC SYSTEM
Hydraulic Oil Filter ..................................................................... 10 Micron Spin-on Element T ype
Hydraulic Reservoir ................................................................... Cast Aluminum; 2 Quart Capacity
3.7 PRODUCTIVITY
The following 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.
Cutting Width: 36" 42"
Acres Per Day: 14 16
12
Section 4
OFF
ON
START
FAST
SLOW
OPERATING INSTRUCTIONS
CAUTION:
Do not attempt to operate this mower unless you
have read this manual. Learn the location and
purpose of all controls and instruments before you
operate this mower .
4.1 CONTROLS AND INSTRUMENT
IDENTIFICATION
Before operating the mower, familiarize yourself with
all mower and engine controls. Knowing the location,
function and operation of these controls is important for
safe and efficient operation of the mower.
1 . Ignition Switch (Figure 4-1). Used to start the
engine and has three positions; OFF, ON, and
START.
2 . Mower Deck Switch (Figure 4-1). Used to
engage and disengage the mower drive system.
Pulling up on the switch will engage the deck drive.
Pushing down on the switch will disengage the deck
drive.
3 . Engine Choke Control (Figure 4-1). Used to
start a cold engine.
4 . Engine Throttle Control (Figure 4-1). Used to
control the engine speed. Pushing the lever forward
increases engine speed. Pulling the lever back
decreases engine speed. Full backward position is
the IDLE position. Full forward is the cutting
position.
ENGINE THROTTLE CONTROL
MOWER
DECK
SWITCH
IGNITION
SWITCH
ENGINE
CHOKE
CONTROL
DECK LIFT
LEFT STEERING
CONTROL
PARKING
BRAKE
FAST
DISENGAGE
PUSH IN TO
TO ENGAGE
PULL OUT
MOWER DECK
SLOW
START
POWER EQUIPMENT
ON
OFF
CHOKE
FUSES
HOUR
METER
DUMP
VALV E
CUTTING HEIGHT
ADJUSTMENT
CUTTER DECK
RELEASE LEVER
RIGHT STEERING
CONTROL
SEAT BELT
FUEL SWITCHING
VALV E
SZC 2005 CAI
Figure 4-1 Controls and Instruments
13
Section 4
5 . Hourmeter (Figure 4-1). Indicates the number of
hours the engine has been operated. It operates
whenever the ignition key switch is in the ON
position. Has preset maintenance reminders for
engine and hydraulic system oil changes. Will start
flashing scheduled maintenance 2 hours before
preset time and continue flashing until 2 hours after.
Automatically resets.
6 . Fuse Holders (Figure 4-1). Two 20-amp fuses
protect the mower’s electrical system. To replace
fuses, pull fuse out of the socket and install a new
fuse.
7 . Left Steering Control (Figure 4-1). Used to
control the mower's left wheel when traveling
forward or reverse.
8 . Right Steering Control (Figure 4-1). Used to
control the mower's right wheel when traveling
forward or reverse.
DUMP VALVE
CONTROL
Figure 4-2 Dump Valve Control
14. Cutter Deck Release Lever (Figure 4-1). Used
to lock the cutter deck in the transport position. Push
the foot pedal forward and lift up on the release lever
to release the cutter deck for normal mowing.
9 . Parking Brake Control (Figure 4-1). Used to
engage and disengage the parking brakes. Pull the
lever back to engage the parking brakes. Push the
lever forward to disengage the parking brakes.
10 . Fuel Switching Valve (Figure 4-1). Located on
the left side of the machine. Used to shut off fuel
supply to the engine and change fuel supply between
the fuel tanks. Rotate the valve counter-clockwise
to supply fuel from the tank on the left side only.
Rotate the valve clockwise to supply fuel from the
tank on the right side only .
11. Dump Valve Control (Figure 4-2). Located on
the hydraulic pumps, used to “free-wheel” the
mower. Rotating the levers clockwise until they stop
allows the unit to move under hydraulic power. The
levers must be in this position and torqued to 10ft/lbs
during operation of the mower. Rotating the levers
counter-clockwise, 1-2 turns, allows the mower to be
moved by hand (free-wheeling).
12. Deck Lift Foot Lever (Figure 4-1). Used to raise
and lower the cutter deck.
15 . Seat Belt (Figure 4-1). Used to secure the
operator. Seat belt must be worn at all times during
operation.
4.2 SAFETY INTERLOCK SYSTEM
The mower is equipped with a safety interlock system
that prevents the engine from starting unless the deck
drive is disengaged, the parking brake is engaged, the
steering control levers are in the neutral position and the
operator is in the seat. The interlock system shuts off
the engine if the operator leaves the seat with the
steering control levers not in the neutral position and/or
the cutter blades engaged and/or the parking brake not
engaged.
WARNING:
Never operate the mower with the interlock
system disconnected or malfunctioning. Do not
disengage or bypass any switch; injury to yourself
and others or property damage could result.
13 . Cutting Height Adjustment (Figure 4-1). Used
to set the cutter deck at the desired cutting height.
14
Section 4
4.3 INITIAL RUN-IN PROCEDURES (First
Day of Use or Approximately 10 Hours)
1. Check all belts for proper alignment and wear at 2, 4
and 8 hours.
2. Change the engine oil and oil filter after the first 20
hours of operation. (See Section 7.4.)
3. Check hydraulic oil level in reservoir. (See Section
7.3)
4. Check for loose hardware. Tighten as needed.
5. Check interlock system for proper operation. (See
Section 4.2)
6. Check tire pressure. Adjust pressure if necessary.
(See Section 7.10)
4.4 STARTING THE ENGINE
6. Turn the ignition key to the START position and
release the key as soon as the engine starts. Do not
hold the key in the ST ART position for more than 15
seconds at a time. Allow at least 60 seconds
between each cranking attempt to prevent
overheating of the starter motor. Prolonged cranking
can damage the starter motor and shorten battery
life.
7. Allow engine to warm before operating the mower.
4.5 GROUND TRAVEL AND STEERING
-IMPORTANT-
If you are not familiar with the operation of a
machine with lever steering and/or
hydrostatic transmissions, the steering and
ground speed operations should be learned
and practiced in an open area, away from
buildings, fences, or obstructions. Practice
until you are comfortable with the handling of
the machine before attempting to mow. Learn
the operation on flat ground before operating
on slopes.
CAUTION:
DO NOT USE STARTING FLUIDS. Use of starting
fluids in the air intake system may be potentially
explosive or cause a “runaway” engine condition
that could result in engine damage and/or personal
injury.
1. Be sure the fuel shutoff valve, located behind the
operator's seat by the left fuel tank, is completely
open. (See Section 7.5)
2. Sit in the operator’s seat, fasten seat belt and place
the steering control levers in the neutral position.
3. Engage the parking brake.
4. If the engine is cold, choke the engine as needed.
5. Move the engine throttle control to about half engine
speed.
-IMPORTANT-
Start practicing with a slow engine speed and
slow forward travel. Learn to feather the
steering controls to obtain a smooth
operating action.
Forward T ravel
T o travel forward with the mower, disengage the parking
brake, pull levers inward out of the neutral lock position
and slowly push the steering control levers forward an
equal distance. The further the steering control levers
are pushed forward the greater the forward speed will
be. To increase the speed, push the steering control
levers further forward and to decrease the speed, pull the
steering control levers back.
T o stop the forward travel, pull the steering control levers
back to the neutral position.
T o steer the mower left while traveling forward, pull the
left steering lever back. The further the lever is pulled
back, the quicker the mower will turn left.
15
Section 4
T o steer the mower right while traveling forward, pull the
right steering control lever back. The further the lever is
pulled back, the quicker the mower will turn right.
-NOTE-
Smooth operation of the steering levers will
produce smooth mower operation. While
learning the operation of the steering
controls, keep the travel speed low.
-IMPORTANT-
Do not travel forward over a curb. The
mower may hang up on the curb. Raise the
deck and travel backwards over the curb at a
45 degree angle. (see section 4.1, item 12 for
cutter deck raising instructions)
Reverse Travel
CAUTION:
Disengage power to the mower before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area
behind the mower .
CAUTION:
T o 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.
T o stop the reverse travel, allow the steering control
levers to return to the neutral position. If the mower is to
be parked, place the handles in the neutral lock position
and engage the parking brake.
4.6 ENGAGING THE DECK DRIVE (CUTTER
BLADES)
1. Set the throttle at about 3/4 speed. Do not attempt to
engage the deck drive at high speed as this shortens
the electric clutch life — use only moderate engine
speed when engaging the deck drive.
2. Engage the deck drive by pulling out on the yellow
switch, located on the instrument panel, (Figure 4-3)
to the engage position.
-NOTE-
A squealing noise may be heard when
engaging or disengaging the deck drive. It is
caused by the electric clutch plates meshing
as the mower comes up to speed. This is
normal.
Before backing up, obser ve the rear for persons
and obstructions. Clear the area before backing
up. P ossible injury or property damage could occur.
T o travel in reverse, pull levers inward out of the neutral
lock position and pull both handles back. Keep the travel
speed low while traveling in reverse.
-NOTE-
The mower may not travel straight in reverse.
Slight adjustments must be made using the
steering controls.
T o 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.
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
STT99CES
Figure 4-3 Cutter Deck Engage Switch
16
Section 4
3. T o disengage the deck drive, push the switch in to
the disengage position.
4. Always operate the engine at full throttle to properly
maintain cutting speed. If the engine starts to lug
down, reduce the forward speed and allow the
engine to operate at maximum RPM.
4.7 HILLSIDE OPERATION
WARNING:
DO NOT operate on steep slopes. T o 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.
1. The mower has been designed for good traction and
stability under normal mowing conditions. However,
caution must be used when traveling on slopes,
especially when the grass is wet. Wet grass reduces
traction and steering control. The Roll-Over
Protection System is standard equipment for this
machine. See section 2.5, page 7 of this manual for
further details.
2. T o prevent tipping or loss of control, do not start or
stop suddenly, avoid unnecessary turns and travel at
reduced speed. If tires lose traction, disengage
blades and proceed slowly off the slope.
4.8 PARKING THE MOWER
1. Park the machine on a flat, level surface only. Do not
park the machine on an incline.
2. Place the steering control levers in the neutral
position.
3. Disengage the cutter blades.
4. Slow the engine to idle speed.
5. Engage the parking brake.
6. Turn the ignition key to the OFF position and remove
the key.
4.9 AFTER OPERA TION
1. Wash the entire mower after each use. Do not use
high pressure spray or direct the spray onto
electrical components.
-IMPORTANT-
Do not wash a hot or running engine. Cold
water will damage the engine. Use compressed
air to clean the engine if it is hot.
2. Keep the entire mower clean to inhibit serious heat
damage to the engine or hydraulic oil circuit.
3. Check the drive belts for proper alignment and any
signs of wear. Correct and adjust if necessary.
3. A void sudden starts when mowing uphill. Sudden
starts may cause the machine to tip backwards.
4. Loss of traction may occur when traveling down hill.
Weight transfers to the front of the machine and may
cause the drive wheels to slip causing loss of braking
or steering.
5. Keep tires properly inflated.
T o avoid injury from b urns, allo w the mower to cool
before removing the fuel tank cap and refueling.
4. After the mower has cooled down, fill the fuel tanks
with fresh, clean fuel at the end of every day of
operation. See Engine Owner's Manual for proper
octane requirements.
5. Check the tire pressure. Adjust pressure if necessary.
17
Section 4
WARNING
4.10 REMOVING CLOGGED MATERIAL
ROTATING BLADES
NEVER PUT Y OUR HANDS INT O THE DISCHARGE
CHUTE FOR ANY REASON! Shut off the engine and
remove the key and only then use a stick or similar
object to remove material if clogging has occurred.
1. If the discharge chute becomes clogged, shut off the
engine and remove the ignition key . Using a stick or
similar item, dislodge the clogged material. Then
resume normal mowing.
4.11 MOVING MOWER WITH ENGINE
STOPPED
To “free-wheel” or move the mower around without the
engine running, place the dump valve levers in the FREEWHEEL position (Figure 4-2, page 14). 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.
4. Keep mower and discharge chute clean.
5. When mowing wet or tall grass, mow the grass
twice. Raise the mower to the highest setting for the
first pass and then make a second pass to the desired
height.
6. Use a slow travel speed for trimming purposes.
7. Operate the engine at full throttle for best cutting.
Mowing with a lower RPM causes the mower to
tear the grass. The engine is designed to be
operated at full speed.
8. Use the alternate stripe pattern for best lawn
appearance. Vary the direction of the stripe each
time the grass is mowed to avoid wear patterns in
the grass.
4.13 ADJUSTING CUTTING HEIGHT
The mower deck can be adjusted from a height of 1-1/2
inch to 5-1/2 inches at 1/4-inch intervals. T o adjust the
cutting height:
4.12 RECOMMENDATIONS FOR MO WING
1. Do not mow with dull blades. A dull blade will tear
grass, resulting in poor lawn appearance and require
extra power.
2. The discharge chute must not be removed and must
be kept in the lowest position to deflect grass
clippings and thrown objects downward. Direct the
side discharge away from sidewalks or streets to
minimize cleanup of clippings. When mowing close
to obstacles, direct the discharge away from the
obstacles to reduce the chance of property damage
by thrown objects.
WARNING
DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING
KIT, OR ENTIRE GRASS CATCHER INSTALLED
3. Cut grass when it is dry and not too tall. Do not cut
grass too short (cut off 1/3 or less of existing grass
for best appearance). Mow frequently.
WARNING:
DO NOT adjust the cutting height with the mower
blades rotating. Disengage the power to the cutter
blades and then adjust cutting height.
1. Disengage the power to the cutter blades.
2. Push the cutting height adjustment foot pedal all the
way forward using your right foot until it locks in
place. (Figure 4-5, page 19).
3. Insert the lanyard pin into the cutting height index at
the desired cutting height. Push forward on the deck
lift foot lever, hold in place and lift up on the deck
release lever, (Figure 4-4). Slowly release the foot
pedal. A deck height decal is located on the cutting
height index as an aid in adjusting the deck to the
desired height. (Figure 4-5).
18
Section 4
DECK RELEASE
LEVER
Figure 4-4 Deck Release Lever
HEIGHT ADJUSTMENT
PEDAL
4.14 Adjusting the Steering Levers
1. Position the seat to the desired location.
2. While in the operator's position with out the engine
running, move both steering levers forward and
reverse to check for full function control and
comfort.
3. If adjustment of the steering levers is needed, use the
following instructions to adjust.
A. Loosen the tension knob on the lever assembly .
B. Rotate the steering lever forward or backward to
achieve the optimum operating position.
C. Tighten the tension knob and repeat on the
opposite side.
D. While in the operators position, bring the steering
levers out of the neutral lock position and check
to make sure both levers are even before
operating.
Figure 4-5 Adjusting Cutting Height
RO TATE
LEVER
TENSION
KNOB
Figure 4-6 Adjusting Steering Levers
4. The control handle can also be adjusted in two
different positions. If necessary, remove the two
bolts securing the control handle to the control lever.
Install the handle in the desired position.
19
TROUBLESHOOTING CUTTING CONDITIONS
Section 5
CONDITION
CAUSE
CURE
Stringers - Occasional Low engine RPM Run engine at full RPM
Blades of Uncut
Grass Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Dull blades, incorrect sharpening Sharpen blades
Deck plugged, grass accumulation Clean underside of deck
Width of Deck
SGB020
Belts slipping Adjust belt tension
Streaking - Strips of Dull, worn blades Sharpen blades
Uncut Grass in Cutting
Path Incorrect blade sharpening Sharpen blades
Low engine RPM Run engine at full RPM
Belt slipping Adjust belt tension
Deck plugged, grass accumulation Clean underside of deck
Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Width of Deck
SGB018
Bent blades Replace blades
Streaking - Strips of Not enough overlapping Increase the overlap of each
Uncut Grass Between between rows pass
Cutting Paths
Width
of
Deck
SGB019
Width
of
Deck
20
Section 5
TROUBLESHOOTING (CONT'D)
CONDITION
CAUSE
CURE
Uneven Cut on Flat Lift worn from blade Replace blade
Ground - Wavy
High-Low Blade upside down Mount with cutting edge toward
Appearance, ground
Scalloped Cut, or
Rough Contour Deck plugged, grass accumulation Clean underside of deck
Too much blade angle (deck pitch) Adjust pitch and level
Deck mounted improperly See your authorized SCAG dealer
Bent spindle area See your authorized SCAG dealer
Dull blade Sharpen blade
Width of Deck
SGB020
Uneven Cut on Uneven ground May 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 Across Tire pressures not equal Check and adjust tire pressure
Width of Cutting Path
Wheels uneven Check and adjust tire pressure
Deck mounted incorrectly See your authorized SCAG dealer
Deck not level side-to side Check for level and correct
Width of Deck
SGB023
21
TROUBLESHOOTING (CONT'D)
Section 5
CONDITION
CAUSE
CURE
Scalping - Blades Low tire pressures Check and adjust pressures
Hitting Dirt or
Cutting Very Close to Ground speed too fast Slow speed to adjust for conditions
the Ground
Cutting too low May need to reduce ground speed,
raise cutting height, change direction
of cut, and/or change pitch and level
Rough terrain May need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Ground speed too fast Slow speed to adjust for conditions
Width of Deck
SGB022
Step Cut -Ridge Blades not mounted evenly Adjust pitch and level
in Center of
Cutting path Bent blade Replace blade
Wet grass Cut grass after it has dried out
Internal spindle failure See your authorized SCAG dealer
Mounting of spindle incorrect See your authorized SCAG dealer
Width of Deck
SGB024
Slope Cut - Sloping Bent spindle mounting area See your authorized SCAG dealer
Ridges Across Width
of Cutting Path Internal spindle failure See your authorized SCAG dealer
Bent deck housing See your authorized SCAG dealer
Width of Deck
SGB025
22
Section 6
ADJUSTMENTS
6.1 PARKING BRAKE ADJUSTMENT
WARNING:
DO NOT operate the mower if the parking brake is
not operable. Possib le severe injury could result.
The parking brake linkage should be adjusted whenever
the parking brake lever is placed in the “ENGAGE”
position and the parking brake will not prevent the mower
from moving. If the following procedures do not allow
you to engage the parking brake properly , contact your
Scag dealer for further brake adjustments.
1. Position a floor jack under the rear of the machine.
Raise the machine and support it to prevent it from
falling. Block the caster wheels to prevent the
machine from moving. Remove the drive wheels.
-NOTE-
If this procedure does not achieve proper brake
adjustment, please contact your authorized Scag
dealer.
LOOSEN
HERE
BRAKE
HANDLE
SZC 2005 BA
Figure 6-1. Brake Adjustment
2. Loosen the nut on the top of the actuator bar until it
is flush with the end of the bolt. (See Figure 6-2, top
view).
3. Measure the distance between frame and the top of
the actuator bar. The distance should be 1-1/4". If
this measurement is not at the specified 1-1/4", adjust
the brake control rod. Adjust by loosening the jam
nuts at both ends of the brake control rod and turning
the rod until the proper distance is achieved. Tighten
the jam nuts. (See Figure 6-1).
5. When the 1-1/4" measurement has been acheived,
tighten the nut on the top of the actuator bar until the
measurement between the frame and actuator bar is
approximately 2".
6. Check the measurement on the RH side between the
frame and actuator bar. This measurement should
be approximately 2". If the measurement is not at 2",
tighten or loosen the nut on top of the actuator bar
until the 2" measurement is acheived.
LOOSEN
HERE
1-1/4"
TIGHTEN
HERE
2"
SZC 2005 BRA
7. Replace the drive wheels and test the brake.
Figure 6-2. Brake Rod Adjustment
23
Section 6
6.2 TRAVEL ADJUSTMENTS
Neutral or tracking adjustments will need to be made if:
A. The steering control levers are in the neutral
position and the machine creeps forward or
backward. (See Neutral Adjustment).
B. The steering control levers are in the full forward
position and the mower pulls to one side or the
other when traveling in a forward direction.
(Tracking Adjustment, See Page 25).
Neutral Adjustment
1. Be sure the dump valve levers are in the run position
and the steering control levers are in the neutral lock
position.
2. With an operator in the seat, start the engine and
disengage the parking brake.
3. Run the engine at full operating speed and check if
the machine creeps forward or backwards.
4. Adjust the RH wheel by loosening the jam nuts on
the steering control rod and turning the rod until the
drive wheel turns in the forward direction. Turn the
rod back until the drive wheel stops moving. Turn
the rod back an additional 1/2 turn. (See Figure 6-3).
5. Tighten the jam nuts and repeat for the LH wheel.
6. Actuate the steering control levers forward and
reverse several times and return them to the neutral
position.
7. Check that the drive wheels remained in neutral and
readjust if necessary.
8. Check that the steering control levers hit the stop
before the pumps reach full stroke. Adjust as
needed.
LEFT STEERING
CONTROL ROD
LOOSEN HERE
RIGHT STEERING
CONTROL ROD
LOOSEN HERE
ADJUST
HERE
Figure 6-3. Steering Control Rods Adjustment
24
Section 6
Tracking Adjustment
CAUTION:
Stop the engine and remove the key from the
ignition before making any adjustments. W ait for
all moving parts to come to a complete stop
before beginning work.
CAUTION:
The engine and drive unit can get hot during
operation causing burn injuries. Allow engine
and drive components to cool before making any
adjustments.
-NOTE-
Before proceeding with this adjustment, be sure
that the caster wheels turn freely and that the tire
pressure in the drive wheels is correct. If the tire
pressure is not correct, the machine will pull to
the side with the lower pressure.
A. Stop the machine and place the steering control
levers in the neutral position. Loosen the lock
nuts securing the ball joints at each end of the
RH steering control rod. Rotate the control rod
to shorten the rod and tighten the lock nuts.
This will cause the control rod to stroke the RH
pump less, slowing down the RH wheel. (See
Figure 6-3, page 24).
-NOTE-
If after making the adjustment as outlined in step
2A, the machine creeps forward or backward, the
neutral adjustment must be made as described on
page 24.
6.3 THROTTLE CONTROL AND CHOKE
ADJUSTMENTS
Throttle control and choke adjustments must be
performed by your Scag dealer to ensure proper and
efficient running of the engine. Should either need
adjustment, contact your authorized Scag service center.
6.4 BELT ADJUSTMENT
1. If at full speed the mower pulls right, it is an
indication that the left wheel is turning faster than the
right wheel. T o adjust this condition, proceed as
follows:
A. Stop the machine and place the steering control
levers in the neutral position. Loosen the lock
nuts securing the ball joints at each end of the
LH steering control rod. Rotate the control rod
to shorten the rod and tighten the lock nuts.
This will cause the control rod to stroke the LH
pump less, slowing down the LH wheel. (See
Figure 6-3).
-NOTE-
If after making the adjustment as outlined in step
1A, the machine creeps forward or backward, the
neutral adjustment must be made as described on
page 24.
2. If at full speed the mower pulls left, it is an indication
that the right wheel is turning faster than the left
wheel. T o adjust this condition, proceed as follows:
WARNING:
Before removing any guards, shut the
engine off and remove the ignition key.
All drive belts and cutter deck belts are spring-loaded
and self-tensioning. The belts should be checked
periodically for proper alignment and wear.
6.5 BELT ALIGNMENT
Belt alignment is important for proper performance of
your Scag mower. If you experience frequent belt wear
or breakage, see your authorized Scag service center for
belt adjustment.
25
Section 6
6.6 CUTTER DECK ADJUSTMENTS
Cutter deck level, pitch and height are set at the factory.
However, if these adjustments should ever need to be
made, the following procedures will aid in obtaining the
proper cutter deck adjustment.
-NOTE-
Before proceeding with the cutter deck
adjustments, be sure that all tires are properly
inflated.
Cutter Deck Level
The cutter deck should be level from side-to-side for
proper cutting performance. To check for level, be sure
that the mower is on a flat, level surface, the tires are
properly inflated and the cutter deck is set at the most
common cutting height that you will use. On the RH side
of the machine, check the distance from the top of the
cutter deck to the floor. Next check the distance from
the top of the cutter deck to the floor on the LH side of
the machine. Both measurements should be the same.
If the two measurements are different, the cutter deck
level must be adjusted as follows:
1. On the front LH side of the cutter deck locate the
cutter deck adjusting bolt. (See Figure 6-4)
2. Loosen the elastic stop nut and move the bolt up or
down in the slot to adjust the cutter deck until the
distance from the top of the cutter deck to the floor
is the same as the measurement on the RH side of
the machine.
3. Tighten the elastic stop nut to secure the cutter deck
in the proper position.
Cutter Deck Pitch
The pitch of the cutter deck should be equal between the
front and rear of the cutter deck for proper cutting
performance. To check for proper deck pitch, be sure
that the mower is on a flat, level surface and the tires are
properly inflated.
Check the distance from the top of the cutter deck to the
floor at the rear RH side of the cutter deck directly
behind the cutter deck hanging chains. Next check the
distance from the top of the cutter deck to the floor at
the front RH side of the cutter deck directly in front of
the cutter deck hanging chains. The measurement at the
front of the cutter deck should be the same as the rear of
the deck. Make these measurements at the LH side of
the cutter deck also. If the measurement at the front of
the deck is not the same, the cutter deck pitch must be
adjusted as follows:
LOCK NUT
LOCK NUT
CUTTER DECK
ADJUSTING BOLT
Figure 6-4. Cutter Deck Adjustment
1. Loosen the lock nuts on both adjusting rods.
(See Figure 6-4)
2. Using an adjustable jaw pliers, turn the adjusting rods
on the non-threaded portion of the rod until the deck
is equal front to back on both the RH and the LH
side of the cutter deck. Tighten both lock nuts.
-NOTE-
To prevent the cutter deck from teetering, all four
cutter deck hanging chains must have tension on
them. If all four chains do not have tension on
them and the deck teeters, you must readjust the
cutter deck as outlined in the procedures above.
All measurements should be taken from the top
edge of the deck as the Advantage decks have an
uneven bottom edge.
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