SCAG POWER EQUIPMENT SWZT-36H-14FS Walk Behind Mower Instruction Manual

EQUIPMENT SWZT-36H-14FS
Walk Behind Mower
Instruction Manual OPERATOR’S MANUAL
SWZT Walk-Behind
Model: SWZT-36H-14FS
SWZT-48H-15FSE SWZT-48H-20CX
SWZT-52H-18FSE SWZT-52H-20CX
SWZT-61H-22FSE SWZT-61H-25CX

SWZT-36H-14FS Walk Behind Mower

Congratulations on owning a Scag mower! This manual contains the operating instructions and safety information for your Scag mower. Reading this manual can provide you with assistance in maintenance and adjustment procedures to
keep your mower performing to maximum efficiency. The specific models that this book covers are listed on the inside cover. Before operating your machine, please read all the information enclosed.

WARNING
FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT IN SERIOUS INJURY OR DEATH.

• Read this manual completely as well as other manuals that came with your mower.
• ALWAYS FOLLOW OSHA APPROVED OPERATION.
• DO NOT operate on steep slopes.
• Always travel across slopes.
• DO NOT mow on wet grass. Wet grass reduces traction and steering control.
• Keep all shields in place, especially the grass discharge chute.
• Before performing any maintenance or service, stop the machine and remove the spark plug wire and ignition key.
• If a mechanism becomes clogged, stop the engine before cleaning.
• Keep hands, feet and clothing away from power-driven parts.
• Keep others off the mower (only one person at a time)

REMEMBER – YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR!
HAZARD CONTROL AND ACCIDENT PREVENTION ARE DEPENDENT UPON THE AWARENESS, CONCERN, PRUDENCE, AND PROPER TRAINING OF THE PERSONNEL INVOLVED IN THE OPERATION, TRANSPORT, MAINTENANCE, AND STORAGE OF THE EQUIPMENT.

This manual covers the operating instructions and illustrated parts list for:

SWZT-36H-14FS| with a serial number of| W6800001 to W6899999
SWZT-48H-15FSE| with a serial number of| W6900001 to W6999999
SWZT-48H-20CX| with a serial number of| W7000001 to W7099999
SWZT-52H-18FSE| with a serial number of| W7100001 to W7199999
SWZT-52H-20CX| with a serial number of| W7200001 to W7299999
SWZT-61H-22FSE| with a serial number of| W7300001 to W7399999
SWZT-61H-25CX| with a serial number of| W7400001 to W7499999
Always use the entire serial number listed on the serial number tag when referring to this product.

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.
– IMPORTANT The replacement of any part on this product by other than the manufacturer’s authorized replacement part may adversely affect the performance, durability or safety of this product.
Use of other than original Scag replacement parts will void the warranty.
When ordering parts, always give the model and serial number of your mower. The serial number plate is located on the frame of the machine near the engine and hydraulic pump as shown in Figure 1-1.

USE ONLY SCAG APPROVED ATTACHMENTS AND ACCESSORIES.
Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine. See Section 8-1. Be aware that using attachments with the mower may affect stability. Be sure to  follow the directions found in the operator’s manual.
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.
1.2 DIRECTION REFERENCE
The “Right” and “Left”, “Front” and “Rear” of the machine are referenced from the operator’s right and left when in the normal operating position and facing the forward travel direction.
1.3 SERVICING THE ENGINE AND DRIVE TRAIN COMPONENTS
The detail servicing and repair of the engine and transmission are not covered in this manual; only routine maintenance and general service instructions are provided. For service of these components during the limited warranty period, it is important to contact your Scag dealer or find a local authorized servicing agent of the component manufacturer. Any unauthorized work done on these components during the warranty period may void your warranty.
1.4 SYMBOLS

SYMBOL

| DESCRIPTION|

SYMBOL

| DESCRIPTION
---|---|---|---
****| Choke|

| Transmission

| Parking Brake| ****| Spinning Blade

| On/Start|

| Spring Tension on Idler

| Off/Stop|

| Oil

| Falling Hazard|

| Thrown Object Hazard

| Fast|

| Slow

| Continuously Variable – Linear|

| Cutting Element – Basic Symbol

| Pinch Point|

| Cutting Element – Engage

| Hour meter/Elapsed Operating Hours|

| Cutting Element – Disengage

| Keep Bystanders Away|

| Read Operator’s Manual

SAFETY INFORMATION

2.1 INTRODUCTION
Your mower is only as safe as the operator. Carelessness or operator error may result in serious bodily injury or death.
Hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper training of the personnel involved in the operation, transport, maintenance and storage of the equipment. Make sure every  operator is properly trained and thoroughly familiar with all of the controls before operating the mower. The owner/user can prevent and is responsible for accidents or injuries occurring to themselves, other people or property.
This  product is capable of amputating hands and feet and throwing objects. Always follow all safety instructions on this product and in the manual to avoid personal injury or death.
READ THIS OPERATOR’S MANUAL BEFORE ATTEMPTING TO START YOUR MOWER. MAKE SURE THAT EVERYONE KNOWS WHERE THE MANUAL IS LOCATED AND KEEP A RECORD OF EACH EMPLOYEE THAT HAS READ THE MANUAL.
A replacement manual is available from your authorized Scag Service Dealer or by contacting Scag Power Equipment, Service Department at P.O. Box 152, Mayville, WI 53050 or contact us via the Internet at www.scag.com. The manual for this machine can be downloaded by using the model and serial number or use the contact form to make  your request. Please indicate the complete model and serial number of your Scag product when requesting replacement manuals.
2.2 SIGNAL WORDS
This symbol means “Attention! Become Alert! Your Safety is Involved!” The symbol is used with the following signal words to attract your attention to safety messages found on the decals on the machine and throughout this manual. The  message that follows the symbol contains important information about safety. To avoid injury and possible death, carefully read the message! Be sure to fully understand the causes of possible injury or death.
SIGNAL WORD:
It is a distinctive word found on the safety decals on the machine and throughout this manual that alerts the viewer to the existence and relative degree of the hazard.
DANGER
The signal word “DANGER” denotes that an extremely hazardous situation exists on or near the machine that could result in high probability of death or irreparable injury if proper precautions are not taken.
WARNING
The signal word “WARNING” denotes that a hazard exists on or near the machine that can result in injury or death if proper precautions are not taken.
CAUTION
The signal word “CAUTION” is a reminder of safety practices on or near the machine that could result in personal injury if proper precautions are not taken.
Your safety and the safety of others depends significantly upon your knowledge and understanding of all correct operating practices and procedures of this machine.
2.3 BEFORE OPERATION CONSIDERATIONS
WARNING
Check all hydraulic connections for tightness.
Inspect all hydraulic hoses and / or lines to insure they are in good condition before operating.

1. NEVER allow children to operate this mower. Do not allow adults to operate this machine without proper instructions.

2. Do not mow when children and/or others are present. Keep children out of the mowing area and in the watchful care of a responsible adult other than the operator. Be alert and turn machine off if a child enters the area.

3. DO NOT allow children to ride or play on the machine, it is not a toy.

4. Keep keys stored in a safe location when the mower is not in use; i.e. where they are inaccessible to children.

5. Clear the area to be mowed of objects that could be picked up and thrown by the cutter blades.

6. DO NOT carry passengers.

7. DO NOT operate the machine under the influence of alcohol or drugs.

8. If the operator(s) or mechanic(s) cannot read English, it is the owner’s responsibility to explain this material to them. A Spanish decal kit is available for this model. See your local Scag Dealer.

9. DO NOT wear loose fitting clothing. Loose clothing, jewelry or long hair could get tangled in moving parts. Do not operate the machine wearing shorts; always wear adequate protective clothing including long pants and substantial slip-resistant footwear. Wearing safety glasses, safety shoes and a helmet is advisable and is required by some local ordinances and insurance regulations.
   WARNING
   Always wear hearing protection. Operating this machine over prolonged periods of time can cause loss of hearing.

10. 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.

11. 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.

12.  DO NOT add fuel to a running or hot engine. Allow the engine to cool for several minutes before adding fuel. Never fuel indoors or inside enclosed trailers.

13. DO NOT start the engine until any spilled fuel has been cleaned up or has evaporated.

14. Keep flammable objects (cigarettes, matches, etc.), open flames and sparks away from the fuel tank and fuel container. Use only approved containers.

15. See Section 7.5 ENGINE FUEL SYSTEM for fueling procedure.

16. Equipment must comply with the latest requirements per SAE J137 and/or ANSI/ASAE S279 when driven on public roads.

17. 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.

18. 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 and the transmission is in neutral. The system shuts off the engine if the operator releases the operator presence levers with the deck drive engaged and/or the transmission is not in neutral. Never operate equipment with the interlock system disconnected or malfunctioning.

19. Be sure the interlock switches are functioning correctly.

2.4 TESTING THE SAFETY INTERLOCK SYSTEM
The safety interlock system should be tested each time before using the machine. If the safety interlock system does not operate as described below, contact your local Authorized Scag Power Equipment Dealer immediately to have the  safety interlock system repaired.

1. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, and engage the PTO switch to the ON (up) position. Stand in the operating position for electric  start models. Try to start the engine; the engine should not start.
2. Place the steering control levers in the neutral lock position, move the speed control lever out of the neutral lock position, engage the parking brake, move the PTO switch to the OFF (down) position, Stand in the operating position for electric start models. Try to start the engine; the engine should not start.
3. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, move the PTO switch to the OFF (down) position. Stand in the operating position for electric start models. Start the engine. With the engine running, engage the PTO switch to the ON (up) position, and remove your hands from the operator presence controls on the handle bars. The engine should shut off.
4. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, move the PTO switch to the OFF (down) position. Stand in the operating position for electric start models. Start the engine. With the engine running, release the parking brake, and remove your hands from the operator presence controls on the handle bars. The engine should shut off.
5. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, move the PTO switch to the OFF (down) position. Stand in the operating position for electric start models. Start the engine. With the engine running, move speed control lever out of neutral, and remove your hands from the operator presence controls on the handle bars. The engine should shut off.

2.5 OPERATION CONSIDERATIONS

1. Know the function of all controls and how to stop quickly.
   WARNING
   DO NOT operate on steep slopes. ALWAYS FOLLOW OSHA APPROVED OPERATION.

2. Reduce speed and exercise extreme caution on slopes and in sharp turns to prevent tipping or loss of control. Be especially cautious when changing directions on slopes.

3. To prevent tipping or loss of control, start and stop smoothly, avoid unnecessary turns and travel at reduced speed.

4. Immediately apply the parking brake if you lose steering control while operating. Inspect the machine and correct the problem before continuing to operate.

5. When using any attachment, never direct the discharge of material toward bystanders or allow anyone near the machine while in operation.

6. Start the engine when the neutral latches are in the neutral lock position, the cutter blades are disengaged, parking brake is engaged and the speed control lever is in neutral.

7. 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
   DO NOT use your hand to dislodge the clogged discharge chute. Use a stick or other device to remove clogged material after the engine has stopped running and the blades have stopped turning.

8. Be alert for holes, rocks, roots and other hidden hazards in the terrain. Keep away from any drop-offs. Beware of overhead obstructions (low limbs, etc.), underground obstacles (sprinklers, pipes, tree roots, etc.). Cautiously enter a new area. Be alert for hidden hazards.

9. 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. If you must mow in reverse, maintain a constant lookout to the rear of the machine and mow slowly.

10. DO NOT turn sharply. Use care when backing up.

11. Disengage power to cutter deck before crossing roads, walks or gravel drives.

12. Mow only in daylight or good artificial light.

13. NEVER raise the deck with the blades engaged.

14. Take all possible precautions when leaving the machine unattended, such as disengaging the mower, stopping the engine, and removing the key.

15. Disengage power to the attachments when transporting or when not in use.

16. 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.
    DANGER
    DO NOT run the engine inside a building or a confined area without proper ventilation. Exhaust fumes are hazardous and contain carbon monoxide which can cause brain injury and death.

17. Keep hands and feet away from cutter blades and moving parts. Contact can injure.

18. Transport the mower using a heavy duty trailer or truck. Insure the trailer or truck has all of the necessary lighting and markings as required by laws, codes, and ordinances. Secure a trailer with a safety chain.

19. Be cautious when loading and unloading onto trailers or trucks. Use only a full width ramp.

20. When transporting the mower, make sure the speed control lever is in neutral, the neutral latches are in the neutral lock position, the engine is off with the key removed, the parking brake is engaged and the wheels have been blocked.

21. Tie the mower down securely using straps, chains, cable, or ropes. Both front and rear straps must be directed down and outward from machine.

22. Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.

23. NEVER leave the machine running unattended.

2.6 MAINTENANCE CONSIDERATIONS AND 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. Place the speed control lever in neutral, engage the parking brake, neutral latches in the neutral lock position, stop engine and remove key or disconnect spark plug wire to prevent accidental starting of the engine when servicing or adjusting the machine. Wait for all movement to stop before adjusting, cleaning or repairing.

3. Remove spark plug wire before making any repairs.

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.

5. Do not change the engine governor settings or overspeed the engine. See the engine operator’s manual for information on engine settings.

6. To 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.

8. NEVER allow untrained personnel to service the machine.

9. Use care when checking blades. Use a Blade Buddy (p/n 9212), 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.

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 and can penetrate skin causing injury. If hydraulic fluid is injected into the skin, it must be surgically removed within a few hours by a doctor or gangrene may result.
    Keep body and hands away from pinholes or nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard and not hands to search for leaks.
    Safely relieve all pressure from the hydraulic system by placing the control levers in the neutral lock position and shutting off the engine before performing any work on the hydraulic system. If you need service on your hydraulic  system, please see your authorized Scag dealer.

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.

16. DO NOT store fuel near flames or drain indoors.

2.7 USING A SPARK ARRESTOR
The engine in this machine is not equipped with a spark arrestor muffler. It is in violation of California Public Resource Code Section 4442 to use or operate this engine on or near any forest covered, brush covered or grass covered land  unless the exhaust system is equipped with a spark arrestor meeting any applicable local or state laws. Other states or federal areas may have similar laws. Check with your state or local authorities for regulations pertaining to these  requirements.
2.8 SPARK IGNITION SYSTEM
WARNING
DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING KIT, OR ENTIRE GRASS CATCHER INSTALLED 483405
483405
WARNING
ROTATING BLADES AND BELTS

• Keep hands, feet & clothing clear
• Keep all guards in place
• Shut off engine & disengage blade clutch before servicing
• Use caution in directing discharge
• Read instruction manual before operating
  DO NOT OPERATE UNLESS GRASS CATCHER, MULCHING KIT OR DISCHARGE CHUTE IS INSTALLED 483406
  WARNING
  INSTALL BELT COVER BEFORE OPERATING MACHINE
  READ OPERATOR’S MANUAL

DANGER
SPINNING BLADES KEEP CLEAR BLADE CONTACT & THROWN OBJECTS CAN INJURE
WARNING
Operation of this equipment may create sparks that can start fires around dry vegetation. A spark arrestor may be required.
The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements. 483900
(supplied with California models only)
MOUNT RIDING ATTACHMENT HERE
WARNING
FALLING HAZARD USE ONLY SCAG APPROVED RIDING ATTACHMENTS SEE OPERATOR’S MANUAL 483404
DANGER
Avoid injury from burns
– Shut off engine
– Allow to cool several minutes
– Remove cap slowly
– Do not overfill
Molded in Fuel Tank

SPECIFICATIONS

3.1 ENGINE
General Type …………………………………………………………………..Heavy Duty Industrial/Commercial Gasoline
Brand ………………………………………………………………………………Kawasaki
Engine Model:
(Scag Model SWZT-36H-14FS) …………………………………………….Kawasaki Model # FS481V
(Scag Model SWZT-48H-15FSE) ………………………………………….Kawasaki Model # FS541V
(Scag Model SWZT-48H-20CX) ………………………………………….. Briggs & Stratton Model #
(Scag Model SWZT-52H-18FSE) …………………………………………….Kawasaki Model # FS600V
(Scag Model SWZT-52H-20CX) …………………………………………….. Briggs & Stratton Model #
(Scag Model SWZT-61H-22FSE) ……………………………………………..Kawasaki Model # FS651V
(Scag Model SWZT-61H-25CX) ………………………………………………. Briggs & Stratton Model #
Displacement:
Kawasaki FS481V ……………………………………………………………………603cc
Kawasaki FS541V …………………………………………………………………….603cc
Kawasaki FS600V ……………………………………………………………………..603cc
Briggs & Stratton 20 CXi ……………………………………………………………656cc
Kawasaki FS651V ………………………………………………………………………726cc
Briggs & Stratton 25 CXi ……………………………………………………………724cc
Cylinders………………………………………………………………………………….2 with Cast-Iron Sleeves – Kawasaki
Governor…………………………………………Mechanical Type with Variable Speed Control Set At 3600 RPM (+/- 100 RPM)
Idle Speed:
Kawasaki ………………………………………………………………………………….. 1550 RPM (+/- 150 RPM)
Briggs & Stratton ……………………………………………………………………….. 1750 RPM (+/- 100 RPM)
Fuel………………………………………………………………………….. Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump …………………………………………………………………………………. varies – see engine manufacturer’s specifications
Starter:
Kawasaki ……………………………………………………………………………………..Recoil or Electric Start
Briggs & Stratton …………………………………………………………………………..Electric Start
3.2 ELECTRICAL
Kawasaki FS481V Starter ………………………………………………………………Electrical Ignition with Recoil Starter
Briggs & Stratton, Kawasaki FS541V, FS600V, FS651V …………………Electric Starting with Bendix Shift Starter
Interlock Switches……………………………………….. Operator Presence, Mower Engagement (PTO), Transmission Neutral
Instrument Panel …………………………………………… Key Switch, Throttle Lever, Choke Control, PTO Switch, Hour Meter
3.3 ENGINE DECK
Drive System …………………………………………………Hydraulic Drive with Two Hydro-Gear™ Integrated Zero-Turn Axles
Model ……………………………………………………………………………………….. Hydro-Gear™ ZT-2800
Steering/Travel Control ………………………………….. Independent Handle Controls for each wheel, squeeze to move from

forward to neutral to reverse, neutral lock lever, speed range controlled

with single lever (patented design)
Parking Brake ………………………………………………………….Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster ………………………………………………………………….. 9 X 3.5-4 Pneumatic Tubeless, w/Roller Bearings
(2) Drive – ……………………….. 18 x 6.5-8 (36) or 18 x 8.5-8 (48, 52, 61) Four-Ply Pneumatic Tubeless, Radius Edge
Tire Pressure:
Front Caster ………………………………………………………………………………………..Flat Free
Drive ……………………………………………………………………………………………….. 12 PSI
Fuel Tank …………………………………………..5-1/2 Gallon Seamless Polyethylene Tank with Large Opening and Fuel Cap
Travel Speed:
Forward ………………………………………………………………………………………….. 0 up to 7 MPH
Reverse ……………………………………………………………………………………………… 0 up to 3 MPH
-NOTE- The machine will travel at 7 mph for transport purposes. For best cutting performance the forward travel speed should be adjusted depending upon the cutting conditions.
3.4 CUTTER DECK
Type …………………………………………………………………………………………. Out-Front design
Construction …………………………………………………………………….10-Gauge top with 11-Gauge reinforcement throughout

the spindle area, 7-Gauge skirt for strength and longevity
True Cutting Width:
36H …………………………………………………………………………………………….35.5″ (90.2 cm)
48H …………………………………………………………………………………………..48″ (122.0 cm)
52H ……………………………………………………………………………………………52″ (132.0 cm)
61H …………………………………………………………………………………………….61″ (154.94 cm)
Cutting Height Adjustment ………………………………………………………. Adjustment from, 1-1/2″ to 4-1/2″ in 1/4″increments
Cutter Blades …………………………………………………………………………… 0.197 in. Thick, Milled Edge, Wear Resistant
Blade Engagement ……………………………………………………Electric Blade Engagement Clutch with Control Panel Switch
Connected to the Cutter Deck through a Belt.
Discharge Opening ………………………………………..Extra Wide Discharge Opening with Spring- Loaded Discharge Chute
Discharge Chute ……………………………………………………………… Black, Polypropylene (Plastic), Flexible
Spindles ………………………Heavy-Duty Spindle Shaft, Cast Aluminum Housing, Sealed Ball Bearing, Maintenance-Free
Spindle Pulleys ………………………………………………………………………………………Split Steel
Cutter Deck Belts………………………………………………………… B-section with Kevlar Cord. Self- Adjusting, Self-Tightening
Electric Clutch Type ……………………………………………………………..Ogura Heavy Duty PTO Clutch Brake
3.5 WEIGHTS AND DIMENSIONS

| 36H| 48H| 52H / 61H
---|---|---|---
Length| 74-1/2″| 74-1/2″|  76-1/2″ / 80″
Tracking Width| 36-1/4″| 41-3/4″| 41-3/4″ / 41-3/4
Overall Width w/chute down| 48-1/2″| 60-1/2″| 64-1/2″ / 73-1/2″
Overall Width w/chute up| 37″| 49″| 53″ / 62″
Overall Height| 44″| 44″| 44″ / 44″
Operating Weight| 550#| 585#| 605# / 700#

3.6 PRODUCTIVITY

| 36H| 48H| 52H / 61H
---|---|---|---
Cutting Width| 36″| 48″| 52″ / 61″
Acres Per Day| 9.3| 12.4| 13.5 / 15.8

The preceding chart will aid you in determining how many acres your Scag mower will cut per day. The chart is an estimate based on 8 hours per day cutting time at 4 MPH with a 20% allowance for overlap and turns.

OPERATING INSTRUCTIONS

WARNING
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). The ignition switch is used to start the engine. Turn the key to the on position before pulling the recoil starter.

2. Mower Deck Switch (Figure 4-1). Use 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). Use to start a
   cold engine.

4. Engine Throttle Control (Figure 4-1). Use to control the engine speed. Pushing the lever forward increases engine speed. Pulling the lever back decreases engine speed. Full back position is the IDLE position. Full forward is the cutting position.

5. Left Steering Control (Figure 4-1). Use to control the mower’s left wheel when traveling forward or reverse. Pull upward for neutral and reverse.

6. Right Steering Control (Figure 4-1). Use to control the mower’s right wheel when traveling forward or reverse. Pull upward for neutral and reverse.

7. Speed Control Lever (Figure 4-1). Use to select the forward speed.

8. Neutral Latch (Figure 4-1). Use to secure the hydraulic drive system in neutral. Apply neutral latches when parking the machine.

9. Operator Presence Control (Figure 4-1). The operator presence control levers must be depressed before the speed control lever is shifted out of neutral or engaging the mower deck.

10. Hour meter (Figure 4-1). Indicates the number of hours the engine has operated. It operates whenever the engine is running. Has preset maintenance reminders for engines and hydraulic system oil changes. Will start flashing scheduled maintenance 2 hours before preset time and continue flashing until 2 hours after. Automatically resets.

11. Parking Brake Lever (Figure 4-1). Use to engage and disengage the parking brake. Pull the lever back to engage the parking brake. Push the lever forward to disengage the parking brake.

12. Cutter Deck Release Lever (Figure 4-1). Use to lock the cutter deck in the transport position. Push forward on the cutting height adjustment lever and lift up on the cutter deck release lever release the cutter deck for normal mowing.

13. Cutting Height Adjustment (Figure 4-1). Use to set the cutter deck at the desired cutting height.

4.2 SAFETY INTERLOCK SYSTEM
The mower is equipped with a safety interlock system that shuts off the engine if the operator releases the operator presence levers with the deck drive engaged and/or the speed control lever not in neutral or the parking brake disengaged. Never operate equipment with the interlock system disconnected or malfunctioning.
WARNING
Never operate the mower with the interlock system disconnected or malfunctioning. Do not disengage or bypass any switch; injury to yourself and others or property damage could result.
4.3 TESTING THE SAFETY INTERLOCK SYSTEM
The safety interlock system should be tested each time before using the machine. If the safety interlock system does not operate as described below, contact your local Authorized Scag Power Equipment Dealer immediately to have the safety interlock system repaired.

1. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, and engage the PTO switch to the ON (up) position. Stand in the operating position for electric start models. Try to start the engine; the engine should not start.
2. Place the steering control levers in the neutral lock position, move the speed control lever out of the neutral lock position, engage the parking brake, move the PTO switch to the OFF (down) position, Stand in the operating position for electric start models. Try to start the engine; the engine should not start.
3. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, move the PTO switch to the OFF (down) position. Stand in the operating position for electric start models. Start the engine. With the engine running, engage the PTO switch to the ON (up) position, and remove your hands from the operator presence controls on the handle bars. The engine should shut off.
4. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, move the PTO switch to the OFF (down) position. Stand in the operating position for electric start models. Start the engine. With the engine running, release the parking brake, and remove your hands from the operator presence controls on the handle bars. The engine should shut off.
5. Place the steering control levers in the neutral lock position, place the speed control lever in the neutral position, engage the parking brake, move the PTO switch to the OFF (down) position. Stand in the operating position for electric start models. Start the engine. With the engine running, move speed control lever out of neutral, and remove your hands from the operator presence controls on the handle bars. The engine should shut off.

4.4 INITIAL RUN-IN PROCEDURES
FIRST DAY OF USE OR APPROXIMATELY 20 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 for loose hardware. Tighten as needed.
4. Check interlock system for proper operation. (See Section 4.3.)
5. Check tire pressure. Adjust pressure if necessary. (See Section 7.9.)

4.5 STARTING THE ENGINE

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 by the fuel tank, is completely open. (See Section 7.5.)
2. Apply the neutral latch levers.
3. Shift the speed control lever into neutral.
4. Place the PTO switch in the disengaged position.
5. Apply the parking brake.
6. If the engine is cold, choke the engine as needed.
7. Move the engine throttle control to about half engine speed.
8. Turn the ignition key to the ON position.
9. Pull the recoil starter on the engine.
10. Allow engine to warm before operating the mower.

4.6 GROUND TRAVEL AND STEERING
– IMPORTANT If you are not familiar with the operation of a walk behind mower with a hydrostatic transmission, the steering and ground speed operations should be learned and practiced in an open area, away from buildings, fences, or
obstructions.
Learn the operation on flat ground before operating on slopes.
Start practicing with a slow engine speed and slow forward travel.
Learn to feather the steering controls to obtain a smooth operating action.
Practice operating the mower until you are comfortable with the controls before proceeding to mow.
FORWARD TRAVEL
To travel forward with the mower, depress the operator presence control, release the parking brake, select the desired speed using the speed control lever, pull steering control levers upward, release the neutral latch for both sides and  slowly release both the left and right steering control levers. The higher the notch selected using the speed control lever, the faster the machine will travel.
To stop the forward travel, pull upward on the steering control levers, lock the neutral latches, shift the speed control lever into neutral and apply the parking brake.
To steer the mower left while traveling forward, pull upward on the left steering control lever. The further the lever is pulled upward, the quicker the mower will turn left.
To steer the mower right while traveling forward, pull upward on the right steering control lever. The further the lever is pulled upward, the quicker the mower will turn right.
– NOTE Smooth operation of the steering control levers will produce smooth mower operation. While learning the operation of the steering controls, keep the travel speed low.
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
Before backing up, observe the rear for persons and obstructions. Clear the area before backing up. Possible injury or property damage could occur.
To travel in reverse, pull steering control levers upward.
Keep the travel speed low while traveling in reverse.
– NOTE The mower may not travel straight in reverse.
To steer left while traveling in reverse, pull upward on the right steering control lever. The further the lever is pulled upward, the quicker the mower will turn left.
To steer right while traveling in reverse, pull upward on the left steering control lever. The further the lever is pulled upward, the quicker the mower will turn right.
4.7 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, to the engage position. See Figure 4-2. – 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.
3. To 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.

4.8 HILLSIDE OPERATION

WARNING
DO NOT operate on steep slopes. ALWAYS FOLLOW OSHA APPROVED OPERATION.

1. 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. Wet grass reduces traction and steering control.
2. To 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.
3. Avoid sudden starts when mowing on slopes.
4. Travel across the slope whenever possible. Never up and down the slope.
5. Keep tires properly inflated. (See Section 7.9.)

4.9 PARKING THE MOWER

1. Park the machine on a flat, level surface only. Do not park the machine on an incline.
2. Disengage the cutter blades.
3. Shift the speed control lever into the neutral position, lock the neutral latches and apply the parking brake.
4.  Slow the engine to idle speed.
5. Turn the ignition key to the OFF position and remove the key.

4.10 AFTER OPERATION

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.
   DANGER
   To avoid injury from burns, allow the mower to cool before removing the fuel tank cap and refueling.

4. After the mower has cooled down, fill the fuel tank 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. (See Section 7.9.)

4.11 REMOVING CLOGGED MATERIAL
DANGER
ROTATING BLADES
NEVER PUT YOUR HANDS INTO 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.

4.12 MOVING MOWER WITH ENGINE STOPPED

To “free-wheel” or move the mower around without the engine running, move the dump valve control lever forward and out towards the drive wheels. See Figure 4-3. Disengage the parking brake and move the mower by hand. When the  machine is in the desired position, engage the parking brake. The dump valve levers must be returned to the DRIVE position to drive the mower.

4.13 RECOMMENDATIONS FOR MOWING

1. Do not mow with dull blades. A dull blade will tear grass, resulting in poor lawn appearance and reduced mowing power.
   WARNING
   DO NOT operate without Discharge Chute, Mulching Kit, or entire Grass Catcher properly installed.

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.

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.

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.

TROUBLESHOOTING CUTTING CONDITIONS

full RPM
Ground speed too fast| Slow speed to adjust for conditions
Wet grass| Cut grass after it has dried out
Dull blades, incorrect sharpening| Sharpen blades
Deck plugged, grass accumulation| Clean underside of deck
Belts slipping| Adjust belt tension
STREAKING – STRIPS OF UNCUT GRASS IN CUTTING PATH| Dull, worn blades| Sharpen blades
Incorrect blade sharpening| Sharpen blades
Low engine RPM| Run engine at full RPM
Belt slipping| Adjust belt tension
Deck plugged, grass accumulation| Clean underside of deck
Ground speed too fast| Slow speed to adjust for conditions
Wet grass| Cut grass after it has dried out
Bent blades| Replace blades
STREAKING – STRIPS OF UNCUT GRASS BETWEEN CUTTING PATHS| Not enough overlapping between rows| Increase the overlap of each pass
UNEVEN CUT ON FLAT GROUND – WAVY HIGH-LOW APPEARANCE, SCALLOPED CUT, OR ROUGH CONTOUR| Lift worn from blade
---|---
Blade upside down
Deck plugged, grass accumulation
Too much blade angle (deck pitch)
Deck mounted improperly
Bent spindle area
Dull blade
U N E V E N      C U T      O N UNEVEN GROUND – WAVY APPEARANCE, HIGH-LOW SCALLOPED CUT, OR ROUGH CONTOUR| Uneven ground
SLOPING RIDGE ACROSS WIDTH OF CUTTING PATH| Tire pressures not equal
Wheels uneven
Deck mounted incorrectly
Deck not level side-to side
CONDITION| CAUSE|

CURE

---|---|---
SCALPING – BLADES HITTING DIRT OR CUTTING VERY CLOSE TO THE GROUND
| Low tire pressures| Check and adjust pressures
Ground speed too fast| Slow speed to adjust for conditions
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
Wet grass| Cut grass after it has dried out
STEP CUT – RIDGE IN CENTER OF CUTTING PATH | Blades not mounted evenly| Adjust pitch and level
Bent blade| Replace blade
Internal spindle failure| See your authorized SCAG dealer
Mounting of spindle incorrect| See your authorized SCAG dealer
SLOPE C UT – SLOPING RIDGES ACROSS WIDTH OF CUTTING PATH
| Bent spindle mounting area| See your authorized SCAG dealer
Internal spindle failure| See your authorized SCAG dealer
Bent deck housing| See your authorized SCAG dealer

ADJUSTMENTS

6.1 PARKING BRAKE ADJUSTMENT
WARNING
Do not operate the mower if the parking brake is not operable. Possible 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. Park the machine on a flat surface and block the caster wheels to prevent the machine from moving. Remove the ignition key.
2. Disengage the parking brake. See Figure 6-1.
3. Remove the cotter pin securing the pivot to the brake control linkage. See Figure 6-1.
4. Push down on the brake control rod to disengage the parking brake and adjust the pivot until it meets the mounting hole. Insert the pivot into the brake control linkage and secure with the cotter pin.
5. Repeat steps 3 and 4 on the other side of the machine.
6. Test the parking brake.

– NOTE
If this procedure does not achieve proper brake adjustment, please contact your authorized Scag dealer.
6.2 NEUTRAL ADJUSTMENT
-NOTE-
Neutral has been set by your Scag dealer at the time of set up and normally does not need to be adjusted. If, however, you find that the neutral has come out of adjustment, follow the procedure below.

1. Raise the drive wheels off the ground and block the caster wheels to prevent the machine from moving.
2. Make sure the speed control lever is in neutral, the steering control levers are in the neutral latch position, and the parking brake is on. Start the engine.
3. Release the steering controls from the neutral latch, release the parking brake and note if the tires are rotating.
4. Start on the left side of the machine. Using a wrench, rotate the tracking adjustment nut counter clockwise just until the LH wheel starts to creep forward. Make note of the position of the adjustment nut. See Figure 6-2.
5. Turn the adjustment nut clockwise just until the wheel turns rearward. Make note of the position of the adjustment nut. To adjust neutral, split the difference between the two noted positions of the adjustment nut.
6. Repeat steps 4 and 5 on the right side as needed.

6.3 NEUTRAL LATCH ADJUSTMENT
-NOTE
This adjustment is made to allow the steering control levers to be moved out of the neutral latch without engaging reverse.

1. Raise the drive wheels off the ground and block the caster wheels to prevent the machine from moving.
2. Make sure the speed control lever is in neutral, the steering control levers are in the neutral latch position, and the parking brake is on.
3. Loosen the control rod jam nuts. See Figure 6-3.
4. Turn the steering control rod until the steering control lever makes contact with the neutral latch. Hold the steering control rod and tighten the jam nuts. See Figure 6-4.
5. Repeat steps 3 and 4 on the right side as needed.

6.4 TRACKING ADJUSTMENT
-NOTE
Before proceeding with this adjustment, be sure that the tire pressures are correct and the neutral adjustment and the steering control rod adjustment have been completed.

1. With the machine on a flat level surface, start the engine, release the parking brake and place the speed control lever into the speed that will most often be used.

2. Squeeze the steering control levers and release the neutral latch. Slowly release the steering control levers, allowing the machine to move forward.
   WARNING
   Before attempting to make any tracking adjustments, move the speed control lever to the neutral position, place the blade engagement switch in the off position, apply the parking brake, and move the steering control levers into the neutral position.

3. If the machine pulls to one side, stop the mower by placing the steering control levers in the neutral position. Using a wrench, turn the tracking adjustment nut on the slower side counter clockwise until the machine tracks straight.

4. Bring the steering control levers back to the neutral lock position and check to see that the machine does not creep forward on the adjusted wheel.

5. If the machine creeps in neutral, you have moved out of the neutral band and will have to turn the tracking adjustment nut clockwise until the machine does not creep.

6. Repeat steps 1 and 2. If the machine continues to pull to one side, stop the mower by placing the steering control levers in the neutral position.
   Turn the tracking adjustment nut on the faster side clockwise until the machine tracks straight.

7. If tracking cannot be acheived, contact your Scag servicing dealer.

6.5 THROTTLE CONTROL AND CHOKE ADJUSTMENTS
These 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.
6.6 BELT ADJUSTMENT
WARNING
Before removing any guards, shut the engine off and remove the ignition key.
All drive belts are spring loaded and self-tensioning, however after the first 2, 4, 8 and 10 hours of operation, the belts should be checked for proper alignment and wear.
Thereafter, check the belts after every 40 hours of operation or weekly, whichever occurs first.
WARNING
If the pump drive belt fails, steering control will be lost which could result in serious injury or death.
Replace the pump drive belt as needed or every 400 hours / 2 years, whichever occurs first.
6.7 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.
6.8 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. If the cutter deck is lower on one side, loosen the elastic stop nuts securing the hanger chains to the cutter deck on the front and rear of the lower side. See Figure 6-5.
2. Move bolts on the front and rear deck hanger chains up or down in the slots until the cutter deck is level between both sides. See Figure 6-5.
3. Hold the cutter deck in position and tighten the two (2) elastic stop nuts 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:

1. Loosen the elastic stop nuts securing the hanger chains to the front of the cutter deck. See Figure 6-6 and 6-7.
2. Move bolts on the front hanger chains up or down in the slots until the cutter deck pitch is equal between both sides. Hold the cutter deck in position and tighten the elastic stop nuts.

– NOTE –
To prevent the cutter deck from teetering, all four (4) 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 deck has an uneven bottom edge.
CUTTER DECK HEIGHT
The cutter deck height adjustment is made to ensure that the cutter deck is cutting at the height indicated on the cutting height index gauge. To check for proper deck height, be sure that the mower is on a flat, level surface and the tires are properly inflated.

1. Place the cutter deck pin the 3″ cutting position. Push the cutter deck lift lever forward, lift up on the cutter deck release lever to lower the cutter deck.

2. Check the measurement from the floor to the cutter blade tip. If the measurement is not 3″, an adjustment can be made using the slots in the cutter deck.

3. Loosen the elastic stop nuts securing the hanger chains to the front and rear of the cutter deck on both sides. See Figure 6-8.
   – NOTE Only the right hand side of the cutter deck is shown below.

4. Move bolts on the front and rear deck hanger chains up or down in the slots until the measurement at the cutter blade is 3″ on both sides of the cutter deck.

5. Hold the cutter deck in position and tighten the elastic stop nuts to secure the cutter deck in the proper position

6.9 ELECTRIC CLUTCH ADJUSTMENT
The electric clutch serves two functions in the operation of the mower. In addition to starting and stopping the power flow to the cutter blades, the clutch also acts as a brake to assist in stopping blade rotation when the PTO is switched off or the operator presence circuit is interrupted. When the clutch is disengaged, the air gap between the armature and rotor must be adjusted to fifteen thousandths of an inch, 0.015, for proper operation. The airgap adjustment is made at three bolts on the clutch. There are three inspection windows, one next to each adjusting bolt. See Figure 6-11.

1. Locate the inspection windows on the clutch.
2. Place a 0.015 feeler gauge in the slot between the rotor and the armature. See Figure 6-10.
3. Tighten or loosen the adjusting bolt as needed to acheive the 0.015 inch airgap. See Figure 6-11. Perform this operation at all three inspection windows.

This adjustment should be done every 500 hours of operation or annually, whichever comes first. In cases where the machine is heavily used, airgap settings should be checked more often.
If the air gap is too narrow, the clutch armature may drag when disengaged, resulting in premature failure.
If the air gap is too wide, the clutch may be slow to engage as the magnet must pull the armature in from a greater distance.

MAINTENANCE

7.10 MAINTENANCE CHART – RECOMMENDED SERVICE INTERVALS

HOURS

| PROCEDURE|

COMMENTS

---|---|---

BREAK-IN (FIRST 10)

| 8| 20| 40| 100| 200|

400

X| | | | | | | Check all hardware for tightness|
X| | | | | | | Check all belts for proper alignment| See paragraph 6.7
| X| | | | | | Check all hydraulic fittings and hoses for leaks| See paragraph 2.6
| X| | | | | | Check engine oil level| See paragraph 7.4
| X| | | | | | Clean mower|
| X| | | | | | Check tire pressure| See paragraph 7.9
| X| | | | | | Clean air filter element| See paragraph 7.6
| X| | | | | | Check condition of blades| See paragraph 7.8
| X| | | | | | Sharpen cutter blades| See paragraph 7.8
| X| | | | | | Check tire pressure| See paragraph 7.9
| X| | | | | | Check the operator interlock system| See paragraph 4.2
| | X| | | | | Change engine oil and filter| See paragraph 7.4
| | | X| | | | Inspect transmission drive belt. Replace every 400 hours or 2 years, whichever comes first| See paragraph 6.6
| | | X| | | | Check belts for proper alignment| See paragraph 6.7
| | | | X| | | Check condition of fuel lines|
| | | | X| | | Check all belts for proper alignment|
| | | | X| | | Replace engine air filter| See engine operator’s manual
| | | | X| | | Grease caster wheel bearings| See paragraph 7.2
| | | | X| | | Drain hydraulic system, replace hydraulic oil and filters| Use SAE 20W50 Motor Oil. See paragraph 7.3
| | | | X| | | Check all hardware for tightness|
| | | | X| | | Change engine oil| See paragraph 7.4
| | | | X| | | Clean air cleaner element| See paragraph 7.6
HOURS| PROCEDURE|

COMMENTS

---|---|---

BREAK-IN (FIRST 10)

| 8| 40| 100| 200|

400

| | | | X| | Check hardware for tightness|
| | | | X| | Change engine oil filter| See paragraph 7.4
| | | | | X| Replace engine fuel filter| See paragraph 7.5
| | | | | X| Grease caster wheel pivot shafts| See paragraph 7.2
| | | | | X| Drain hydraulic system, replace hydraulic oil and filters| Use SAE 20W50 Motor Oil. See paragraph 7.3
| | | | | X| Adjust electric PTO clutch| See paragraph 6.9

• Perform these maintenance procedures more frequently under extreme dusty or dirty conditions
  7.11 LUBRICATION
  GREASE FITTING LUBRICATION CHART

Compatible Greases
Scag Premium Chassis Grease p/n 486257
7.12 HYDRAULIC SYSTEM
A. CHANGING HYDRAULIC OIL
The hydraulic system oil and filter should be changed after the first 75-100 hours of machine operation and every 400 hours or annually thereafter, whichever occurs first. The oil should also be changed if the color of the fluid has become
black or milky. A black color and/or a rancid odor usually indicates possible overheating of the oil, and a milky color usually indicates water in the hydraulic oil.
– IMPORTANT The hydraulic system oil should be changed if you notice the presence of water or a rancid odor to the hydraulic oil.

1. Park the mower on a level surface and stop the engine.
2. Remove the three 1/4″ filter guard screws and filter guard from both axles. See Figure 7-1. Clean any loose debris around the perimeter of the filter.
3. Place a suitable container under the hydraulic oil filters. Remove the fill cap from the expansion reservoir.
4. Remove the hydraulic filters from both axles and allow the fluid to drain into the container. Properly discard the oil when the system has drained completely. See Figure 7-1.
5. Once the hydraulic system has drained, install new hydraulic oil filters to both axles by hand, turn 3/4 to one complete turn after filter gasket contacts the filter base.
6. Reinstall the filter guards and torque the screws to 65 in/lbs.
7. Remove the side top port plug from both axles before filling with oil. See Figure 7-2.
8. Remove the fill port plug from the top of both transaxle. See Figure 7-3. Fill each transaxle with Scag Hydraulic System Oil (p/n 486255 – 1 Quart or p/n 486254 – 1 Gallon) oil until the oil just appears at the bottom of each axle side top port. Approximately 2 quart capacity per transaxle (4 quart total). Reinstall the top port plugs and torque to 180 in/lbs.
9. Reinstall the fill port plug on the top of the transaxle.
10. The hydraulic system will need to be purged of all air. Raise the rear of the machine so the drive wheels are off the ground. Use jackstands and block the front caster wheels to prevent the machine from moving.
11. Move the dump valve control levers to the “freewheel” position. See Figure 7-4.
12. While in the operator’s position, start the engine, disengage the parking brake, select the desired speed using the speed control lever, release the neutral latch for both sides and slowly release both the left and right steering control levers.
13. Run the engine at 1/2 throttle and move the steering control levers to full forward and reverse 5 to 6 times.
14. Move the speed control lever to the neutral position, engage the neutral latch for both sides and engage the parking brake. Move the dump valve control levers to the “drive” position. See Figure 7-4.
15. While in the operator’s position, start the engine, disengage the parking brake, select the desired speed using the speed control lever, release the neutral latch for both sides and slowly release both the left and right steering control levers. It may be necessary to repeat steps 11 to 15 until the air is completely purged from the system.
16. After the purge process is complete, remove the side top port plug from both transaxles to check the oil level. See Figure 7-2. If necessary, fill oil until the oil just appears at the bottom of each axle top port

7.13 ENGINE OIL
A. CHECKING ENGINE CRANKCASE OIL LEVEL
The engine oil level should be checked after every 8 hours of operation or daily as instructed in the Engine Operator’s Manual furnished with this mower.
B. CHANGING ENGINE CRANKCASE OIL
After the first 20 hours of operation, change the engine crankcase oil and replace the oil filter. Thereafter, change the engine crankcase oil after every 100 hours of operation or bi-weekly, whichever occurs first. Refer to the Engine Operator’s Manual furnished with this mower for instructions.
C. CHANGING ENGINE OIL FILTER
After the first 20 hours of operation, replace the engine oil filter. Thereafter, replace the oil filter after every 200 hours of operation or every month, whichever occurs first. Refer to Engine Operator’s Manual for instructions.
7.14 ENGINE FUEL SYSTEM
DANGER
To avoid injury from burns, allow the mower to cool before removing the fuel tank cap and refueling.
A. FILLING THE FUEL TANK
Fill to the bottom of the filler neck insert (approximately 5-1/2 gallons indicating Full (F) on the fuel gauge) at the beginning of each operating day. See Figure 7-5. Do not overfill. Use clean, fresh unleaded gasoline with a minimum octane rating of 87 and a maximum of 10% Ethanol.
DO NOT use E85 Fuel. Using E85 Fuel will cause severe damage to the engine.
DO NOT over fill. The empty space in the fuel tank allows the fuel to expand. Overfilling the fuel tank may result in fuel leakage, damage to the engine and/or damage to the machine’s emissions system.

To avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive.

1. Extinguish all cigarettes, cigars, pipes and other sources of ignition.
2. Use only an approved gasoline container.
3. Never remove the gas cap or add fuel with the engine running. Allow the engine to completely cool before fueling.
4. Never fuel the machine indoors or in an enclosed trailer.
5. DO NOT start the engine until any spilled fuel has been cleaned up or has evaporated.
6. Never store the machine or fuel container where there is an open flame, spark or pilot light such as on a water heater or other appliances.
7. Never fill containers inside a vehicle or on a truck or trailer bed with a plastic liner. Always place containers on the ground away from your vehicle before filling.
8. Remove the machine from the truck or trailer and fuel on level ground. If this is not possible, then refuel the machine with a portable container, rather than from a gasoline dispenser nozzle.
9. Keep the nozzle in contact with the rim of fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lock-open device.
10. If fuel is spilled on clothing, change clothing immediately and wash affected skin.
11. Replace gas cap and tighten the fuel cap until it ratchets.

B. REPLACING IN-LINE FUEL FILTER ELEMENTS
The engine fuel filter should be replaced after every 500 hours of operation or annually, whichever occurs first.

1. Close the shut-off valve.
2. Remove and replace the engine fuel filter. Open the fuel shut-off valve.

7.15 ENGINE AIR CLEANER
A. CLEANING AND/OR REPLACING AIR CLEANER ELEMENT
For any air cleaner, the operating environment dictates the air cleaner service periods. Inspect and clean the air cleaner element after every 100 hours of operation or biweekly, whichever occurs first and replace the element if required.
– NOTE In extremely dusty conditions it may be necessary to check the element once or twice daily to prevent engine damage.

1. Remove the air cleaner cover. Set aside.
2. Remove the air cleaner and inspect.
3. Clean or replace the air cleaner and foam pre-cleaner as recommended by the engine manufacturer.
4. Replace the air cleaner cover and secure.

7.16 BATTERY – ELECTRIC START MODELS
WARNING
Lead-acid batteries produce flammable and explosive gases. To avoid personal injury when checking, testing or charging batteries, DO NOT use smoking materials near batteries. Keep arcs, sparks and flames away from batteries. Provide
proper ventilation and wear safety glasses.
WARNING
Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to cause cancer and reproductive harm.
Wash hands after handling.
WARNING
Electric storage battery fluid contains sulfuric acid which is POISON and can cause SEVERE CHEMICAL BURNS. Avoid contact of fluid with eyes, skin, or clothing. Use proper protective gear when handling batteries. DO NOT tip any battery beyond 45° angle in any direction. If fluid contact does occur, follow first aid suggestions below.
BATTERY ELECTROLYTE FIRST AID
External Contact — Flush with water. Eyes — Flush with water for at least 15 minutes and get medical attention immediately.
Internal — Drink large quantities of water. Follow with Milk Of Magnesia, beaten egg, or vegetable oil. Get medical attention immediately. In case of internal contact, DO NOT give fluids that would induce vomiting.
A. CHARGING THE BATTERY
Refer to the battery charger’s manual for specific instructions.
Under normal conditions the engine’s alternator will have no problem keeping a charge on the battery. If the battery has been completely discharged for a long period of time, the alternator may not be able to recharge the battery, and a battery charger will be required.
DO NOT charge a frozen battery. It may explode and cause injury. Let the battery warm before attaching a charger.
Whenever possible, remove the battery from the mower before charging and make sure the electrolyte covers the plates in all cells.
WARNING
BATTERIES PRODUCE EXPLOSIVE GASES.
Charge the battery in a well ventilated space so gases produced while charging can dissipate.
Charging rates between 3 and 50 amperes are satisfactory if excessive gassing or spewing of electrolyte does not occur or the battery does not feel excessively hot (over 125°F). If spewing or gassing occurs or the temperature exceeds 125°F, the charging rate must be reduced or temporarily stopped to permit cooling.
B. JUMP STARTING

1. The booster battery must be a 12 volt type. If a vehicle is used for jump starting, it must have a negative ground system.
2. When connecting the jumper cables, connect the positive cable to the positive battery post, then connect the negative cable to the negative battery post.

7.17 CUTTER BLADES
A. BLADE INSPECTION

1. Remove the ignition key before servicing the blades.
   WARNING
   Always wear proper hand and eye protection when working with cutter blades.

2. Check the cutter blades for straightness. If the cutter blades appear bent, they will need to be replaced.

3. Check the cutter blades for wear. If any part of the cutter blade is worn to 1/2 its original thickness, replace the cutter blade.
   WARNING
   Do not attempt to straighten a bent blade, and never weld a broken or cracked blade. Always replace it with a new blade to assure safety.

4. Check the cutter blades for gouges. If there are gouges on the top or bottom surfaces of the cutter blade, replace the cutter blade.

5. If a blade cutting edge is dull or nicked, it should be sharpened. Remove the blades for sharpening. See “Blade Replacement” Section 7.8C.
   – NOTE Keep the blades sharp. Cutting with dull blades not only yields a poor mowing job, but slows the cutting speed of the mower and causes extra wear on the engine and the blade drive by pulling hard.

B. BLADE SHARPENING
– NOTE
If possible, use a file to sharpen the blade. Using a wheel grinder may burn the blade.
– NOTE
DO NOT sharpen the blades beyond 1/3 of the width of the blade. See Figure 7-6.

1. Sharpen the cutting edge at the same bevel as the original. See Figure 7-6. Sharpen only the top of the cutting edge to maintain sharpness.
2. Check the balance of the blade. If the blades are out of balance, vibration and premature wear can occur.
   The cutter blades should be balanced to 1-1/2 oz-in.
   See your authorized Scag dealer for blade balancing or special tools, if you choose to balance your own blades.

C. BLADE REPLACEMENT
WARNING
Always wear proper hand and eye protection when working with cutter blades.

1. Remove the ignition key before replacing the blades.

2. Raise the mower deck to the highest position. Place the lanyard pin in the highest cutting height position to prevent the cutter deck from falling.

3. Secure the cutter blades to prevent them from rotating, (use the optional Blade Buddy tool P/N 9212, to assist in securing the cutter blades), remove the blade attaching bolt. Remove the cutter blade, bolt, lock washer and flat washer from the spindle shaft. See Figure 7-7.
   CAUTION
   Inspect the cutter blade spacer(s) and washer for wear and/or cupping. Replace the worn parts.
   Worn spacer(s) and/or washer will not allow proper tightening of the cutter blade and can lead to cutter blade failure, personal injury or property damage.

4. To install the new cutter blade, put the lock washer and flat washer onto the blade bolt and slide the bolt into the hole in the cutter blade. – NOTE Be sure that the blade is installed with the lift wing toward the top.

5. Install the cutter blade onto the cutter spindle shaft. Secure the blades from rotating and torque to 75 ft/ lbs. See Figure 7-7.

7.18 TIRES
Check the tire pressures after every 8 hours of operation or daily.
Caster Wheels Flat Free
Drive Wheels 12 PSI
NOTES

ILLUSTRATED PARTS LIST

8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES.
Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine.
Scag approved attachments and accessories:

Grass Catchers
GC-F4 (fabric grass catcher)| 9075
Mulching Accessories
Mulch Plate (36)| 920G
Mulch Plate (48)| 9298
Mulch Plate (52)| 9299
Mulch Plate (61)| 920U
Hurricane Mulch Kit (36)| 920D
Hurricane Mulch Kit (48)| 9293
Hurricane Mulch Kit (52)| 9294
Hurricane Mulch Kit (61)| 920T
Miscellaneous
Blade Buddy| 9212
Flat Free Tire Assembly (36/48/52)| 9275
Flat Free Tire Assembly (61)| 9276
Anti-Blowout Kit, Hero Deck (36)| 925P
Anti-Blowout Kit, Hero Deck (48)| 925S
Anti-Blowout Kit, Hero Deck (52)| 925T
Anti-Blowout Kit, Hero Deck (61)| 925V
Scag Premium Lubricants
Chassis Grease| 486257
Hydraulic System Oil (1 gal)| 486254
Hydraulic System Oil (1 qt)| 486255

36H CUTTER DECK

• = California Models Only (not shown)

48H CUTTER DECK

• = California Models Only (not shown)

52H CUTTER DECK

• = California Models Only (not shown)

61H CUTTER DECK

• = California Models Only (not shown)

CUTTER DECK CONTROLS

CUTTER DECK CONTROLS

ENGINE DECK & HYDRAULIC SYSTEM

ENGINE DECK & HYDRAULIC SYSTEM

Briggs & Stratton Cxi
55| 429200| Heatshield, Muffler – Briggs & Stratton CXi
56| 04001-18| Bolt, Hex Head 3/8-16 x 3/4″
57| 04117-02| Nut, Flange Elastic Stop 3/8-16

• Available through the individual engine manufacturer.
  ** RTN Spring is Scag p/n 484600. See item #25

STEERING CONTROLS

STEERING CONTROLS

BRAKE COMPONENTS

ELECTRICAL SYSTEM AND THROTTLE CONTROL – MANUAL START

ELECTRICAL SYSTEM AND THROTTLE CONTROL – MANUAL START

ELECTRICAL SYSTEM AND THROTTLE CONTROL – ELECTRIC START

ELECTRICAL SYSTEM AND THROTTLE CONTROL – ELECTRIC START

SWZT FUEL SYSTEM

SWZT FUEL SYSTEM

• = Available through engine manufacturer only.

ZT-2800 HYDRAULIC AXLE ASSEMBLY

ZT-2800 HYDRAULIC AXLE ASSEMBLY

– NOTE –
Refer to label on transaxle for identification
*ZH-KMCC-SLUC-1MTX
**ZH-GMCC-SLUB-1MTX

REPLACEMENT DECALS AND INFORMATION PLATES

REPLACEMENT DECALS AND INFORMATION PLATES

SWZT ELECTRICAL SCHEMATIC – MANUAL START
(shown with the Key Off, PTO Off, Parking Brake Applied, Speed Control in Neutral, OPC Disengaged)

SWZT ELECTRICAL SCHEMATIC – ELECTRIC START
(shown with the Key Off, PTO Off, Parking Brake Applied, Speed Control in Neutral, OPC Disengaged)

LIMITED WARRANTY – COMMERCIAL EQUIPMENT

Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgment of Scag, to be defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealer without charge for parts and labor during the periods specified below. This warranty is limited to the original purchaser provided the product was purchased from an Authorized Scag Power Equipment Dealer and is not transferable. Proof of purchase will be required by the dealer to substantiate any warranty claims. All warranty work must be performed by an Authorized Scag Service Dealer.
This warranty is limited to the following specified periods from the date of the original retail purchase for defects in materials or workmanship:

• Wear items including drive belts, blades, hydraulic hoses and tires are warranted for ninety (90) days.
• Batteries are covered for ninety (90) days.
• Frame and structural components including oil reservoir and oil coolers are warranted for two (2) years (parts and labor) for commercial use or three (3) years / 500 hours (whichever comes first) (parts and labor) for non-commercial use.
• Cutter decks are warranted against cracking for a period of three (3) years. (parts and labor 1st and 2nd year; parts only 3rd year.)

The repair or replacement of the cutter deck will be at the option of Scag Power Equipment. We reserve the right to request components for evaluation.
This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in any way contrary to the operating instructions as specified in the Operator’s Manual.

• Engines and electric starters are covered by the engine manufacturer’s warranty period.
• Major drive system components are warranted for two (2) years (parts and labor) for commercial use or three (3) year / 500 hour (whichever comes first) (parts and labor) for non-commercial use by Scag Power Equipment. (commercial and non-commercial war- ranty excludes fittings, hoses, drive belts). The repair or replacement of the hydraulic pump or hydraulic motor will be at the option of Scag Power Equipment. This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in any way contrary to the operating instructions as specified in the Operator’s Manual.
• Electric clutches have a Limited Warranty for two (2) years (parts and labor) for commercial use or three (3) year / 500 hours (whichever comes first) (parts and labor) for non-commercial use.
• Spindle assemblies have a Limited Warranty for three years (parts and labor 1st year and 2nd; parts only 3rd year).
• Any Scag product used for rental purposes is covered by a 90 day warranty.

The Scag mower, including any defective part must be returned to an Authorized Scag Service Dealer within the warranty period. The expense of delivering the mower to the dealer for warranty work and the expense of returning it to the owner after repair will be paid for by the owner. Scag’s responsibility is limited to making the required repairs and no claim of breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Scag mower. “Non-Commercial” use is defined as a single property owner, where the single property is the residence of the owner of the mower. If the mower is cutting more than the owners single property, it is deemed commercial use and the “non-commercial” warranty does not apply. Scag Power Equipment reserves the right to deny and / or void the non-commercial warranty if it believes it to be in commercial use.
This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in any way contrary to the operating instructions as specified in the Operator’s Manual. The warranty  does not apply to any damage to the mower that is the result of improper maintenance, or to any mower or parts that have not been assembled or installed as specified in the Operator’s Manual and Assembly Manual. The warranty does not cover any mower that has been altered or modified, changing performance or durability. In addition, the warranty does not extend to repairs made necessary by normal wear, or by the use of parts or accessories which, in the reasonable judgment of Scag, are either incompatible with the Scag mower or adversely affect its operation, performance or durability.
Scag Power Equipment reserves the right to change or improve the design of any mower without assuming any obligation to modify any mower previously manufactured. All other implied warranties are limited in duration to the two (2) year for commercial use, three (3) years / 500 hour for non-commercial use or ninety (90) days for mowers used for rental purpose. Accordingly, any such implied warranties including merchantability, fitness for a particular purpose, or otherwise, are disclaimed in their entirety after the expiration of the appropriate two year, three year / 500 hour or ninety day warranty period. Scag’s obligation under this warranty is strictly and exclusively limited to the repair or replacement of defective parts and Scag does not assume or authorize anyone to assume for them any other obligation. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
Scag assumes no responsibility for incidental, consequential or other damages including, but not limited to, expense for gasoline, expense of delivering the mower to an Authorized Scag Service Dealer and expense of returning it to the owner, mechanic’s travel time, telephone or telegram charges, rental of a like product during the time warranty repairs are being performed, travel, loss or damage to personal property, loss of revenue, loss of use of the mower, loss of time or inconvenience. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

© 2023 Scag Power Equipment
Division of Metalcraft of Mayville, Inc.

References

• Scag Power Equipment: Commercial Lawn Mowers and More

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