Scag STHM User Manual
MODEL STHM
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.
© 2003
SCAG POWER EQUIPMENT
DIVISION OF MET ALCRAFT OF MA YVILLE, INC.
P ART NO. 03133
PRINTED 7/03
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 pre vention 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:
STHM-23CV with a serial number of 9220001 to 9229999
SM-61A with a serial number of 9230001 to 9239999
SM-72A with a serial number of 9240001 to 9249999
Always use the entire serial number listed on the serial number
tag when referring to this product.
TABLE OF CONTENTS
MODEL STHM
SUBJECT PAGE
Introduction.................................................................................................. 1
General Safety Instructions.......................................................................... 1
Signal Words ............................................................................................... 1
Symbols....................................................................................................... 2-3
Before Operating ......................................................................................... 4
While Operating........................................................................................... 4-5
Maintenance and Storage ........................................................................... 5-6
Initial Run-In Procedures ............................................................................. 6
Mower Operation ......................................................................................... 6-7
Parking Brake Adjustments ......................................................................... 8
Neutral Adjustment ...................................................................................... 8-9
Belt Tension ................................................................................................. 9-10
Belt Alignment ............................................................................................. 10
Cutter Deck Adjustments ............................................................................. 10-11
Cutter Blades............................................................................................... 11
Custom-Cut Baffle Adjustment..................................................................... 11-12
Lubrication and Maintenance ...................................................................... 13
Troubleshooting Cutting Conditions ............................................................ 14-16
Technical Specifications .............................................................................. 17-18
Notes .......................................................................................................... 19
WE SUPPORT OPE
TECHNICIAN
CERTIFICATION
TABLE OF CONTENTS
(CONTINUED)
SUBJECT PAGE
Illustrated Parts List
SM 61A, 72A Cutter Deck...................................................................... .. 20-21
Engine Deck ..................................................................................... 22-23
Upper Hydraulics.............................................................................. 24-25
Lower Hydraulics........................................................................................ 26-27
Control Linkage.......................................................................................... 28-29
Instrument Panel ............................................................................... 30-31
Rider Frame Assembly ..................................................................... 32-33
Brake Linkage................................................................................... 34-35
Eletrical System................................................................................ 36
Winch Lift System ............................................................................. 37
Replacement Decals ........................................................................
Warranty Statement........................................................ following section 8
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 or contact us via the Internet
at www.scag.com. Use the contact form to make your
request. Please indicate the complete model and serial
number of your Scag product.
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.
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
The “Right” and “Left”, “Front” and “Rear” of the
machine are referenced from the operator’s perspective when in the normal operating position and
facing the forward travel direction.
GENERAL SAFETY INSTRUCTIONS
READ THIS OPERATOR'S MANUAL and all
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 irreparable injury if proper precautions are
not taken.
WARNING:
The signal word “WARNING” denotes that a hazard
exists on or near the machine that can result in
injury or death if proper precautions are not taken.
CAUTION:
The signal word “CAUTION” is a reminder of
safety practices on or near the machine that could
result in personal injury if proper precautions are not
taken.
1
ISO Symbols
CE Mark
SYMBOL DESCRIPTION
Choke
Parking Brake
On/Start
SYMBOL DESCRIPTION
Transmission
Spinning Blade
48071S
Spring T ension on Idler
Off/Stop
Oil
WARNING
Falling Hazard
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
2
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
481039S
Fast
Continuously Variable - 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
BEFORE OPERATING
WHILE OPERATING
1. Know the operating 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, move the
blade engagement switch to the OFF position and
apply the parking brake.
1. Start the engine when the cutter blades are
disengaged, the parking brake is on and the right
foot pedal is in the neutral position.
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. 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. Apply the parking brake to
prevent the mower from moving when you are
not in the operator’s position.
4
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
wires, 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.
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, 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.
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 operator’s position or leaving
the mower unattended, move the right foot pedal
into the neutral position, apply the parking brake,
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 the cutter
blades when another person approaches.
WARNING:
Battery posts, terminals, and related accessories
contain lead and lead compounds, chemicals
known to the State of California to cause cancer
and reproductive harm. Wash hands after han-
dling.
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.
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
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.
12. Make sure all hydraulic connections are tight and
all hydraulic hoses and lines are in good condition before starting the machine.
13. Hydraulic fluid is under high pressure. If you
need service on your hydraulic system, please see
your authorized Scag dealer.
INITIAL RUN-IN PROCEDURES
(FIRST DAY OF USE OR APPROXIMATELY 10 HOURS)
1. Check the belts for proper tension at 2, 4 and 8
hours. Adjust as needed. (See Belt Tension,
page 9).
2. Check the neutral adjustment. (See Adjustments, page 8)
* Check the oil level in the engine and the
hydraulic reservoir.
* 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 right hand foot pedal must be in the
NEUTRAL position.
* The blade clutch switch must be in the OFF
position.
* The parking brake 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.
3. Check the tires for proper pressure.
Caster Wheels 25 psi
Drive Wheels 12 psi
Rear Steering Wheel 15 psi
4. Check for loose hardware. Tighten as needed.
5. Check the safety switches for proper adjustment:
* The engine should crank and start if the
machine is in neutral, the PTO engagement
switch is OFF and the parking brake is ON.
7. 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.
4. Depress the left hand operator presence pedal.
5. 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
-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 3/4
throttle, not under full load.
WARNING:
If you are not familiar with the operation of the
hydrostatic drive, practice turning and
maneuvering before engaging the cutter blades.
5. Release the parking brake. Depress the right foot
pedal at the toe end to drive forward (See Figure 1)
or depress the pedal at the heel end to drive in
reverse. (See Figure 2)
SGB003
Backward (Reverse) Operation - Depress Heel
End of Pedal
Figure 2
6. When driving over curbs, disengage the cutter blades
and raise the cutter deck to clear the curb. Drive
forward over the curb. After the curb is clear, lower
the cutter deck back to normal operating position.
Be sure to leave slack in the cable after lowering the
cutter deck.
-NOTE-
The left side operator presence pedal must be
depressed for operation.
sgb002
Forward Operation - Depress Toe End of Pedal
Figure 1
7. To "freewheel" or move the machine around without
the engine running, rotate the dump valve lever
located on the left rear of the engine deck to the
freewheel position (See Figure 3). The lever must be
returned to the drive position to operate the machine.
DUMP VALVE
FREE
WHEEL
DRIVE
SGB006
Figure 3. Dump Valve Location
-NOTE-
To prevent damage to the hydraulic system, do not
exceed 1MPH when moving the machine in the
freewheel postion.
7
ADJUSTMENTS
PARKING BRAKE
If the drive wheels consistently rotate when foot
pedal control is in neutral, go to step 4.
Minor brake adjustments can be made by loosening
the top nut on both brake cables (see Figure 4).
Back the nuts off approximately 1/4". While pulling
one cable downward, tighten the bottom nut on the
cable until it touches the bottom of the brake cable
mount. Tighten both the top and bottom nuts to
lock the cable in place. Repeat the above steps for
the second brake cable. Make sure that both
cables are adjusted evenly so that the brakes do not
cause the mower to pull to the left or right.
-NOTE-
This is a minor brake adjustment. If the
brakes do not function properly after this
adjustment, see your Scag Service Dealer
before operating your mower.
If the drive wheels inconsistently rotate, i.e. drive
wheels sometimes rotate and sometimes do not
when foot pedal is not depressed, then check
neutral adjustment bolt for "zero free play" in neutral
control spring.
-NOTE-
If there is free play in the foot pedal have your
SCAG servicing dealer inspect the machine and
repair it as needed.
4. If the drive wheels rotate in the forward travel
direction, turn the adjustment bolt clockwise until the
tire rotation stops. If the drive wheels rotate in the
backward travel direction, turn the adjustment bolt
counter-clockwise until the tire rotation stops (See
Figure 5).
Adjust
Nuts
SGB028
Figure 4. Parking Brake Adjustment
NEUTRAL ADJUSTMENT
1. Set the engine deck up on jack stands so the wheels
are free to rotate.
2. Block the caster wheels to prevent an accident
should the machine fall off the jack stands.
3. Start the engine and determine if the drive wheels
rotate.
Neutral Control
Spring
9/16" Socket
SGB029
Figure 5. Neutral Adjustment
8
5. Check the adjustment of the right foot control pedal
for full forward speed. The pedal should rest on the
foot plate when the pump is stroked in the full
forward position. To make an adjustment, disconnect the ball joint from the pedal arm and loosen the
jam nut (See Figure 6). Place the foot control pedal
forward against the foot rest and adjust the ball joint
on the rod until the stud aligns with the hole in the
arm. Bolt the ball joint to the arm and tighten the
jam nut.
Jam Nut
Ball Joint
SGB030
2. To adjust cutter deck drive belt: Adjust the nut so
that the belt moves 1/2" with 10 pounds of pressure. (See Figure 7).
End Of L-Shaped
Bracket
Nut
Washer
"J" Bolt
Belt
SGB044
Figure 7. Cutter Deck Drive Belt Tension
3. To adjust blade drive belt: Using a belt tension
gauge, check the belt tension so that the belt moves
1/2" with 10 pounds of pressure. (See Figure 8).
Figure 6. Foot Control Pedal Adjustment
6. Start the engine. The wheels should rotate only
when the foot control pedal is depressed.
BEL T TENSION
CAUTION:
Stop engine and remove the key from the ignition
before making any adjustments. Wait for all
moving parts to come to a complete stop before
beginning work.
-NOTE-
The Hydro Drive Belt is spring-loaded and
does not require adjustment.
To adjust cutter deck drive and blade belts:
1. Remove belt cover.
Use of Tension Gauge
sgb007
Figure 8. Blade Drive Belt Tension Check
9
Adjust the tension by tightening or loosening
the nut on the J-bolt.
Nut
Deck
"J" Bolt
Adjusting the blade height can be done by moving any
number of the five smaller spacers on the blade mounting bolts to the top or to the bottom of the spindle shaft.
All blades should be positioned equally (See Figure 10).
The unit is shipped with one spacer on top of spindle
and four underneath (See Figure 10).
This adjustment does not affect blade pitch.
Washer
Belt
SGB031
Figure 9. Blade Belt Tension Adjustment
4. Replace the belt covers.
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 Dealer
for belt adjustment.
CUTTER DECK ADJUSTMENTS
Due to the many conditions that exist, it is difficult to
suggest a setting that will work for every lawn. There
are, however, two adjustments that should be made on
the cutter deck: pitch and height.
Hex Nut-Torque
to 75 Lb-Ft
Spindle
Shaft
Spindle
Assembly
Washer
Hex Head Bolt
Cutter Blade
Spacer 1/4"
Cutter
Deck
Hex Head
Bolt / Nut
Cutter Blade
Spacers1/4"
Cutter Blade
Figure 10. Cutter Blade Adjustment
PITCH is the angle of the blades (comparing front
to rear).
HEIGHT is the nominal distance that the blade is
off the ground. This measurement is made with the
blades pointed side to side and distance is measured
between cutting tip and ground.
-NOTE-
For best results, keep the cutter deck
high in relation to the engine deck and
the blades low in the cutter deck; ie. 4 or
5 spacers below the spindle shaft.
Additional range to the cutting height can be
achieved by repositioning the cutter deck in relationship to the engine deck. This adjustment also affects
the pitch of the deck.
10
There are three positions for mounting the cutter deck
(See Figure 11). For cutting in the lowest position,
mount the cutter deck in the top hole (A). For cutting in
the highest position, mount the deck in the lowest hole
(C). Setting the cutter deck height will be determined
by the type of cutting conditions.
CUTTER BLADES
CAUTION:
Blades have a sharp cutting edge. Wear protective
gloves or wrap blades with protective material when
removing, sharpening and installing blades.
A
B
C
SGB032
Figure 11. Cutter Deck Height Adjustment
Caster spacers also can be repositioned to change the
cutting heights and to change the pitch of the deck (See
Figure 12).
To adjust the caster spacers, raise the deck and remove
the pin and caster wheel. Reposition the caster spacers
as needed, then replace the caster, top spacers and pin.
Make the same adjustments on the other caster wheel.
Angle Blade Back
Do Not Cut In
X
X Must NOT Exceed
30
1/3 Blade Width
SGB033
Figure 13. Blade Sharpening
Do not sharpen beyond 1/3 of the width of the blade. (See
Figure 13).
-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 can occur. See your authorized Scag Dealer for
blade balance tools.
CUSTOM-CUT BAFFLE ADJUSTMENT
To adjust the blade height, move any number of the five
1/4" thick spacers on the blade mounting bolts to the
top of the spindle shaft or below the spindle shaft.
Pin
Spacers
2002SGB005
Figure 12. Repositioning Spacers
The Custom-Cut Baffle is designed to deliver optimum
airflow and superior cutting performance in any type of
grass. The Custom-Cut Baffle can be raised or lowered
to precisely tailor the deck's performance for the type of
grass being cut. The baffle can be set in three (3)
different positions for optimum performance.
11
A. 3" Position - baffle is installed using the top set of
holes on the front baffle welded inside the cutter
deck. (See Figure 15). The Advantage cutter deck
will deliver the best quality-of-cut in very tall, wiry ,
tough to cut grass.
3. Move the Custom-Cut Baffle to desired position.
(See Figures 15through 17 for position).
4. Reinstall the mounting hardware as shown. (See
Figures 15 though 17). Torque hardware to 39ft.lbs.
B. 3-1/2" Position (factory setting) - baffle is installed
using the middle set of holes on the front baffle
welded inside the cutter deck. (See Figure 16). For
general purpose cutting, place the Custom Cut Baffle
in the 3-1/2" position. This gives the best mix of
cutting performance in all types of grass.
C. 4" Position - baffle is installed using the bottom set of
holes on the front baffle welded inside the cutter
deck . (See Figure 17). Placing the baffle in the 4"
setting will enhance fall cutting (leaf pickup) and
reduce cutter deck "blowout".
T o adjust the Custom-Cut Baffle height:
1. Place the cutter deck in the transport position.
2. Remove the hardware securing the Custom-Cut
Baffle to the cutter deck. (See Figure 14).
-NOTE-
Hardware location used in the illustrations
are for reference only. Location of hardware
may vary depending on cutter deck size.
MOUNTING
HARDWARE
MOUNTING
HARDWARE
TOP SET OF HOLES
FOR 3" SETTING
FLATWASHER
CARRIAGE BOLT
ELASTIC STOP
NUT
Figure 15. 3" Custom-Cut Baffle Position
MIDDLE SET OF HOLES
FOR 3-1/2" SETTING
FLATWASHER
CARRIAGE BOLT
2004 CCB - 3-1/2" Setting
ELASTIC STOP
NUT
Figure 16. 3-1/2" Custom-Cut Baffle Position
BOTTOM SET OF HOLES
FOR 4" SETTING
CARRIAGE BOLT
2004 CCB - 3" Setting
Figure 14. Custom-Cut Baffle
2004 CCB
12
FLATWASHER
ELASTIC STOP
NUT
2004 CCB - 4" Setting
Figure 17. 4" Custom-Cut Baffle Position
LUBRICATION & MAINTENANCE
Break-In
(1st 10 Hours)
8 Hours (Daily)
25 Hours
40 Hours (Weekly)
X
X
X
X
X
X
X
X
X
*
X
X
X
100 Hours (Biweekly)
200 Hours (Monthly)
500 Hours or Annually
Check all hardware for proper tightness
Change engine oil and filter at 5 hours
Check hydrostatic oil level
Check belt tension
Fill fuel tank before starting
Check engine oil
Clean blower screen
Remove debris from under belt cover
Sharpen cutter blades
Grease spindle bearings 2 pumps of hand gun
Clean air filter/check for damage or loose parts
Check/clean air intake and cooling areas
Check tire pressure
* Lubrication may be required every 8 to 40 hours, depending on climate and environment.
+ Compatible Greases: Mobilux #2 found at Mobil Service Stations
Ronex MP found at Exxon Service Stations
Super Lube MEP #2 & Super Stay-M #2 found at Conoco Service Stations
Shell Alvania #2 found at Shell Service Stations
Lidok EP #2 found at industrial shops
PROCEDURE
COMMENTS
Add oil as needed - SAE 10W30
Do not over fill
MORE OFTEN IF NEEDED
US Lithium MP White Grease 2125+
MORE OFTEN IF NEEDED
1
MORE OFTEN IF NEEDED
Add or adjust as required
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Service precleaner element
Check battery electrolyte level
Grease caster wheel bearings
Grease caster wheel pivots
Grease idler arm pivots
Service air cleaner element
Change engine oil
Check spark plug condition and gap
Clean cooling areas
1
Check all hardware for proper tightness
Change engine oil filter
Check hydro fluid reservoir level
Clean and adjust spark plugs
Grease rider frame pivot
Grease control bell cranks
Grease steering handle bearing
Grease foot pedal bearings
Grease rear wheel pivot (vertical)
Grease rear wheel bearing
X
Drain hydraulic system and replace fluid
X
Change hydrostatic oil filter
1
Distilled water only
Chassis grease
Chassis grease
Chassis grease
1
See engine mfg. information
See engine mfg. information
See engine mfg. information
See engine mfg. information
Chassis Grease
Chassis Grease
Chassis Grease
Chassis Grease
Chassis Grease
US Lithium MP White Grease 2125+
Use SAE 10W30 motor oil
Clean area before removing filter
1. Perform these maintenance procedures more frequently under extreme dusty or dirty conditions.
13
TROUBLESHOOTING CUTTING CONDITIONS
CONDITION
CAUSE
CURE
Stringers - Occasional Low engine RPM Run engine at full 3600 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 tensions
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 3600 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
14
TROUBLESHOOTING
CONDITION
CAUSE
CURE
Uneven Cut on Flat Lift worn off of 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
Width of Deck
SGB023
15
TROUBLESHOOTING
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
Wet grass Cut grass after it has dried out
Step Cut Blades not mounted evenly Adjust pitch and level
Ridge in Center of
Cutting Path Bent blade Replace blade
Internal spindle failure See your authorized SCAG dealer
Mounting of spindle incorrect See your authorized SCAG dealer
Width of Deck
SGB024
Slope Cut - Sloping 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
16
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