Form No. 3375-781 Rev A TITAN ZX4820 or ZX5420 Zero-Turn-Radius Riding Mower Model No. 74920—Serial No. 313000001 and Up Model No. 74924—Serial No. 313000001 and Up Register at www.Toro.com.
This machine is a ride-on, rotary-blade lawnmower intended to be used by homeowners in residential applications. It is primarily designed for cutting grass on well-maintained lawns. It is not designed for cutting brush, mowing grass and other growth alongside highways, or for agricultural uses. Model No. Serial No. This product complies with all relevant European directives, for details please see the separate product specific Declaration of Conformity (DOC) sheet.
Contents Hydraulic System Maintenance ....................................41 Checking the Hydraulic Oil Level..............................41 Changing the Hydraulic System Filter and Oil ....................................................................41 Mower Deck Maintenance...........................................43 Servicing the Cutting Blades.....................................43 Mower Deck Leveling .............................................46 Inspecting the Belts ............................
Preparation Safety • While mowing, always wear substantial footwear and long Safe Operation Practices for Ride-on (riding) Rotary Lawnmower Machines • • This machine meets or exceeds European Standards in effect at the time of production. However, improper use or maintenance by the operator or owner can result in injury.
• When using any attachments, never direct discharge of • • • • • • • • • If the fuel tank has to be drained, this should be done material toward bystanders nor allow anyone near the machine while in operation. Never operate the machine with damaged guards or without safety protective devices in place. Do not change the engine governor settings or overspeed the engine. Operating the engine at excessive speed can increase the hazard of personal injury.
• Follow the manufacturer's recommendations for wheel Uncertainty Value (K) = 0.31 m/s2 weights or counterweights to improve stability. Measured values were determined according to the procedures outlined in EN 836 (Riding & Stand-Ons). • Use extreme care with grass catchers or other attachments. These can change the stability of the machine and cause loss of control.
Slope Indicator G011841 Figure 3 This page may be copied for personal use. 1. The maximum slope you can safely operate the machine on is 15 degrees. Use the slope chart to determine the degree of slope of hills before operating. Do not operate this machine on a slope greater than 15 degrees. Fold along the appropriate line to match the recommended slope. 2. Align this edge with a vertical surface, a tree, building, fence pole, etc. 3. Example of how to compare slope with folded edge.
Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. 110-6691 1. Thrown object hazard—keep bystanders a safe distance from the machine. 2. Thrown object hazard, mower—do not operate without the deflector, discharge cover, or grass collection system in place. 3. Cutting/dismemberment of hand or foot—stay away from moving parts. 99-8936 1. Machine speed 4. Neutral 2.
3-7009 1. Warning—do not operate the mower with the deflector up or removed; keep the deflector in place. 2. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts. Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystanders a safe distance from the battery. 2. No fire, open flame, or smoking. 7. Wear eye protection; explosive gases can cause blindness and other injuries. 3. Caustic liquid/chemical burn hazard 4.
Manufacturer's Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. 114-1606 1. Entanglement hazard, belt—keep all guards in place. 115-9632 1. Power take-off (PTO), Blade control switch on some models 2. Blade control switch—On 3. Blade control switch—Off 4. Choke 5. Fast 6. Continuous variable setting 7. Slow 117-1194 1.
120-5466 1. Warning—read the Operator's Manual. 5. Loss of traction/control hazard, slopes—loss of traction/control on a slope, disengage the blade control switch (PTO), proceed off the slope slowly. 2. Warning—read the instructions before servicing or performing maintenance; move the motion control levers to the park (brake) position, remove the ignition key and disconnect the spark plug wire. 6.
115-9630 1. Read the Operator's Manual before performing any maintenance. 2. Check the engine oil every 8 hours 4. Check the hydraulic oil every 25 hours 3. Check the drive wheel tire pressure every 25 hours 6. Lubricate the caster wheel every 25 hours 5. Check the caster wheel tire pressure every 25 hours 119-8983 1. Fuel 2. Full 3. Half 12 4.
119-8986 1. Fuel 2. Full 3. Half 13 4.
Product Overview 2 3 4 1 5 6 10 G015763 9 7 8 Figure 4 1. Drive wheel 2. Operator seat 4. Motion control levers 5. Parking brake 7. Front caster wheel 8. Anti-scalp roller 3. Roll over protection system (ROPS) 6. Footrest 9. Foot pedal deck lift and height-of-cut 10. Deflector 3 G014766 1 4 2 Figure 5 1. Mower Deck 3. Engine 2. Drive wheel 4.
Controls Fuel Gauge Become familiar with all the controls before you start the engine and operate the machine (Figure 6). The fuel window located below the operator position can be used to verify the level of gasoline in the tank (Figure 7). 1 2 1 3 g020264 5 Figure 7 4 1. Fuel gauge window g017722 Figure 6 1. Throttle control 4. Ignition switch 2. Choke 5. Blade control switch (PTO) Motion Control Levers The motion control levers are speed sensitive controls of independent wheel motors.
Using the Rollover Protection System (ROPS) Operation Note: Determine the left and right sides of the machine from the normal operating position. WARNING To avoid injury or death from rollover: keep the roll bar in the raised locked position and use the seat belt. Think Safety First Please carefully read all of the safety instructions and decals in the safety section. Knowing this information could help you, your family, pets or bystanders avoid injury.
G015035 DANGER 2 1 In certain conditions during fueling, static electricity can be released causing a spark which can ignite the gasoline vapors. A fire or explosion from gasoline can burn you and others and can damage property. 2 3 • Always place gasoline containers on the ground away from your vehicle before filling. Figure 10 1.
1 DANGER In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property. • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any gasoline that spills. g020264 Figure 11 • Never fill the fuel tank inside an enclosed trailer. 1. Fuel gauge window • Do not fill the fuel tank completely full.
Checking the Engine Oil Level Operating the Choke Before you start the engine and use the machine, check the oil level in the engine crankcase; refer to Checking the Engine Oil Level. Use the choke to start a cold engine. 1. If the engine is cold, use the choke to start the engine. 2. Pull up on the choke knob to engage the choke before using the ignition switch (Figure 16). Operating the Parking Brake 3. Push down on the choke to disengage the choke after the engine has started (Figure 16).
1 2 3 4 RT ST A N RU P ST O G008947 Figure 17 2. Turn the ignition key to stop to stop the engine. Starting and Stopping the Engine 5 Starting the Engine 1. Sit down on the seat (Figure 18) and fasten the seat belt. 2. Move the motion controls outward to the neutral lock position (Figure 18). G010080 Figure 18 3. Set the parking brake (Figure 18); refer to Setting the Parking Brake. 7. Turn the ignition key to the Start position (Figure 17). When the engines starts, release the key. 4.
Stopping the Engine Note: Engaging the blade control switch (PTO) with the throttle position at half or less will cause excessive wear to the drive belts. WARNING Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Always remove the ignition key and move the motion control levers outward to the park position when leaving the machine unattended, even if just for a few minutes.
Using the Motion Control Levers with the parking brake on or if you rise from the seat when the blades are engaged. Testing the Safety Interlock System Test the safety interlock system before you use the machine each time. If the safety system does not operate as described below, have an Authorized Service Dealer repair the safety system immediately. 1. While sitting on the seat, engage the parking brake and move the blade control switch to On. Try starting the engine; the engine should not crank. 2.
Stopping the Machine WARNING Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Always remove the ignition key and move the motion control levers outward to the park position when leaving the machine unattended, even if just for a few minutes. To stop the machine, move the traction control levers to neutral and move to locked position, disengage the blade control switch (PTO), and turn the ignition key to off.
1 5 4 3 2 G010236 Figure 27 G010219 Figure 26 Transport Lock Position 1. Deck lift pedal 4. Lock position. lowest height-of-cut (use only for deck removal) 2. Cut height pin 5. Lock position. transport position 3. Height-of-cut positions Adjusting the Height-of-Cut Using the Lock Positions The height-of-cut can be adjusted from 1-1/2 to 4-1/2 inch (38 to 114 mm) in 1/4 inch (6 mm) increments by relocating the height-of-cut pin into different hole locations.
Adjusting the Anti-Scalp Rollers Adjusting the Motion Control Levers Whenever you change the height-of-cut, it is recommended to adjust the height of the anti-scalp rollers. Adjusting the Height The motion control levers can be adjusted higher or lower for maximum operator comfort. 1. Disengage the blade control switch (PTO), move the motion control levers to the neutral lock position and set the parking brake. 1.
4. Move the bypass levers rearward and then down to lock them in place as shown in Figure 31 to disengage the wheel motors. Repeat this on each side of the machine. 2. Move the motion control levers outward to the neutral lock position, set the parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. The machine is now able to be pushed by hand. 1 3.
1 1 2 2 3 4 3 G012800 4 2 Figure 35 3 G012806 1. Carriage bolt, existing Figure 33 1. Baffle guard 3. Carriage bolt (5/16 x 3/4 inch) 2. Locknut (5/16 inch) 4. Right baffle 2. Rear holes in the discharge plate 3. Cut off baffle, shipped loose 4. Locknut, existing 12. Use the fasteners removed to secure the cut off baffle to the deck. 9. Locate the baffle guard at the front edge of the side discharge opening.
Removing the Mulch Baffle 9. Remove the carriage bolt (5/16 x 3/4 inch) and locknut (5/16 inch) on the rear wall of the mower deck securing the baffle to the deck (Figure 37). 1. Park the machine on a level surface and disengage the blade control switch. 2. Move the motion control levers outward to the neutral lock position, set the parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3.
17. Install the mower as described in the Installing the Mower procedure in the Maintenance section for more information. 1 Using the Side Discharge The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. DANGER Without a grass deflector, discharge cover, or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris. Contact with rotating mower blade(s) and thrown debris will cause injury or death.
Operating Tips setting. Then cut the grass again using the lower, normal setting. Fast Throttle Setting When Stopping For best mowing and maximum air circulation, operate the engine at the fast throttle position. Air is required to thoroughly cut grass clippings, so do not set the height-of-cut so low as to totally surround the mower by uncut grass. Always try to have one side of the mower free from uncut grass, which allows air to be drawn into the mower.
Maintenance Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the first 8 hours • Change the engine oil. After the first 50 hours • Change the hydraulic system filter and oil. Before each use or daily • • • • • Check the safety interlock system. Check the engine oil level. Clean the air intake screen. Check the mower blades. Inspect the grass deflector for damage After each use • Clean the mower housing. Every 25 hours • Grease all lubrication points.
Figure 40 Located on the seat pan underside 1. Read the Operator's Manual before performing any maintenance. 2. Check the engine oil every 8 hours 4. Check the hydraulic oil every 25 hours 3. Check the drive wheel tire pressure every 25 hours 6. Lubricate the caster wheel every 25 hours 5.
Premaintenance Procedures Lubrication Raising the Seat Service Interval: Every 25 hours—Grease all lubrication points. Make sure the motion control levers are locked in the neutral lock position. Lift the seat forward. Grease Type: No. 2 General Purpose Lithium Base Grease The following components can be accessed by raising the seat: 1. Park the machine on a level surface and disengage the blade control switch. Greasing the Bearings • Service decal 2.
Engine Maintenance Cleaning the Element Service Interval: Every 100 hours—Service the paper element (more often in dusty, dirty conditions). Every 200 hours/Yearly (whichever comes first)—Replace the paper element (more often in dusty, dirty conditions). 1. Lightly tap the element on a flat surface to remove dust and dirt. 2. Inspect the element for tears, an oily film, and damage to the seal. WARNING Contact with hot surfaces may cause personal injury.
Note: Dispose of the used oil at a recycling center. engine with oil below the low mark because the engine may be damaged. 1. Park the machine so that the drain side is slightly lower than the opposite side to ensure the oil drains completely. 1. Park the machine on a level surface, disengage the blade control switch, stop the engine, engage parking brake, and remove the key. 2. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake. 2.
1 2 1 2 3 4 3 4 5 6 5 6 G008796 Figure 46 3/4 Changing the Engine Oil Filter G008748 Figure 47 Service Interval: Every 200 hours—Change the oil filter. (more often in dusty, dirty conditions) Note: Ensure the oil filter gasket touches the engine and then an extra 3/4 turn is completed. Note: Change the engine oil filter more frequently when operating conditions are extremely dusty or sandy. 3. Fill the crankcase with the proper type of new oil; refer to Changing the Oil. 1.
Figure 48 16 ft-lb 22 N-m Note: Due to the deep recess around the spark plug, blowing out the cavity with compressed air is usually the most effective method for cleaning. The spark plug is most accessible when the blower housing is removed for cleaning. G010687 Figure 50 Checking the Spark Plug Important: Never clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks.
Fuel System Maintenance 1 2 Replacing the Fuel Filter 3 Service Interval: Every 100 hours/Yearly (whichever comes first) (more often under dusty, dirty conditions). 1. Disengage the blade control switch (PTO), move the motion control levers to the neutral lock position, and set the parking brake. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. G008963 Figure 52 3. Allow the machine to cool down. 1. Fuel filter 2. Hose clamp 4.
Electrical System Maintenance 1 2 3 4 Servicing the Battery Service Interval: Monthly DANGER Battery electrolyte contains sulfuric acid which is a deadly poison and causes severe burns. Do not drink electrolyte and avoid contact with skin, eyes or clothing. Wear safety glasses to shield your eyes and rubber gloves to protect your hands. G010240 Figure 53 Removing the Battery WARNING Battery terminals or metal tools could short against metal machine components causing sparks.
1 3 2 30 25 Important: Always keep the battery fully charged. This is especially important to prevent battery damage when the temperature is below 32°F (0°C). 1. Charge battery for 10 to 15 minutes at 25 to 30 amps or 30 minutes at 10 amps. 2. When the battery is fully charged, unplug the charger from the electrical outlet, then disconnect the charger leads from the battery posts (Figure 54). 3. Install the battery in the machine and connect the battery cables, refer to Installing the Battery.
Drive System Maintenance Hydraulic System Maintenance Hydraulic System Oil Specification Checking the Tire Pressure Oil Type: Toro HYPR-OIL® 500 or 20w-50 motor oil. Service Interval: Every 25 hours—Check tire pressure. System Capacity: approximately 4.495 liter (152 oz) with a filter change. Maintain the air pressure in the front and rear tires as specified. Uneven tire pressure can cause uneven cut. Check the pressure at the valve stem (Figure 56).
Removing Hydraulic System Filters Important: When the hydraulic oil filter is removed, all of the hydraulic oil in each transaxle will drain out. Use a container that will handle 4.495 liters (152 oz) or larger. 1. Stop engine, wait for all moving parts to stop, and allow engine to cool. Remove the key and engage the parking brake. 2. Locate the filter and guards on each transaxle drive system (Figure 58). Remove three screws securing the filter guard and guard.
Mower Deck Maintenance Bleeding the Hydraulic System 1. Raise the rear of machine up and support with jack stands (or equivalent support) just high enough to allow drive wheels to turn freely. Servicing the Cutting Blades Maintain sharp blades throughout the cutting season because sharp blades cut cleanly without tearing or shredding the grass blades. Tearing and shredding turns grass brown at the edges, which slows growth and increases the chance of disease.
1 G014973 3 Figure 61 1. Cutting Edge 3. Wear/slot Forming 2. Curved Area 4. Crack 2 Figure 63 1. Blade, in position for measuring 2. Level surface 3. Measured distance between blade and surface (A) Checking for Bent Blades Note: The machine must be on a level surface for the following procedure. 4. Rotate the same blade 180 degrees so that the opposing cutting edge is now in the same position. 1.
Sharpening the Blades WARNING A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders. • Always replace bent or damaged blade with a new blade. • Never file or create sharp notches in the edges or surfaces of blade. WARNING When sharpening blade, pieces of blade could be thrown and cause serious injury. Wear proper eye protection when sharpening blade. 1. Use a file to sharpen the cutting edge at both ends of the blade (Figure 67).
Mower Deck Leveling (7.9 mm) lower than the rear of the mower, adjust the blade level using the following instructions: Check to ensure the mower deck is level any time you install the mower or when you see an uneven cut on your lawn. 1. Park the machine on a level surface and disengage the blade control switch. The mower deck must be checked for bent blades prior to leveling; any bent blades must be removed and replaced. Refer to the Checking for Bent Blades procedure before continuing. 2.
Inspecting the Belts 2 Service Interval: Every 50 hours Check the belts for squealing when the belt is rotating, blades slipping when cutting grass, frayed belt edges, burn marks and cracks are signs of a worn mower belt. Replace the mower belt if any of these conditions are evident. Replacing the Mower Belt Squealing when the belt is rotating, blades slipping when cutting grass, frayed belt edges, burn marks and cracks are signs of a worn mower belt.
7. Lower the mower to the lowest height-of-cut. Place the height-of-cut pin in the lock position for lowest height-of-cut. 1 2 8. Remove the belt from the mower deck pulleys and remove the existing belt. 9. Install the new belt around the mower pulleys and the clutch pulley under the engine (Figure 73). 3 WARNING The spring is under tension when installed and can cause personal injury. Be careful when removing the belt. 10. Using a spring removal tool, (Toro part no.
Installing the Mower 1. Park the machine on a level surface and disengage the blade control switch. 1 2. Move the motion control levers outward to the neutral lock position, set the parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 2 3. Slide the mower under the machine. 4. Lower the height-of-cut lever to the lowest position. Place the height-of-cut pin in the lock position for lowest height-of-cut. 4 3 5.
Cleaning 2 Washing the Underside of the Mower Service Interval: After each use—Clean the mower housing. 1 3 Wash the underside of the mower after each use to prevent grass buildup for improved mulch action and clipping dispersal. 1. Park the machine on a level surface and disengage the blade control switch. 2. Move the motion control levers outward to the neutral lock position, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3.
Storage 5. Sit on the seat and start the engine. Engage the blade control switch and let the mower run for one to three minutes. Cleaning and Storage 6. Disengage the blade control switch, stop the engine, and remove the ignition key. Wait for all moving parts to stop. 1. Disengage the blade control switch (PTO), set the parking brake, and turn the ignition key to Off. Remove the key. 7. Turn the water off and remove the coupling from the washout fitting. 2.
C. Stop the engine, allow it to cool, and drain the fuel tank. D. Restart the engine and run it until it stops. E. Dispose of fuel properly. Recycle as per local codes. Important: Do not store stabilizer/conditioned fuel over 90 days. 13. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. 14. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 15. Store the machine in a clean, dry garage or storage area.
Troubleshooting Problem Starter does not crank Engine will not start, starts hard, or fails to keep running Possible Cause 1. Blade control switch (PTO) is engaged. 1. Move blade control switch (PTO) to disengaged. 2. Parking brake is not on. 3. Drive levers are not in neutral lock position. 4. Operator is not seated. 5. Battery is dead. 6. Electrical connections are corroded or loose. 7. Fuse is blown. 8. Relay or switch is defective. 2. Set the parking brake. 3.
Problem Machine does not drive. Abnormal vibration. Uneven cutting height. Possible Cause 1. By pass valves is not closed tight. 1. Tighten the by pass valves. 2. 3. 4. 5. 2. 3. 4. 5. Pump belt is worn, loose or broken. Pump belt is off a pulley. Broken or missing idler spring. Hydraulic oil level is low or too hot. Change the belt. Change the belt. Replace the spring. Add hydraulic oil to reservoirs or let it cool down. 1. Cutting blade(s) is/are bent or unbalanced. 1.
Schematics G014723 Wire Diagram (Rev.
Notes: 56
Notes: 57
Notes: 58
International Distributor List Distributor: Atlantis Su ve Sulama Sisstemleri Lt Balama Prima Engineering Equip. B-Ray Corporation Casco Sales Company Ceres S.A. CSSC Turf Equipment (pvt) Ltd. Cyril Johnston & Co. Equiver Femco S.A. G.Y.K. Company Ltd. Geomechaniki of Athens Guandong Golden Star Hako Ground and Garden Hako Ground and Garden Hayter Limited (U.K.) Hydroturf Int. Co Dubai Hydroturf Egypt LLC Irriamc Irrigation Products Int'l Pvt Ltd. Jean Heybroek b.v.
The Toro Warranty and The Toro GTS Starting Guarantee Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly promise to repair for the original purchaser1the Toro Product listed below if defective in materials or workmanship or if the Toro GTS (Guaranteed to Start) engine will not start on the first or second pull, provided the routine maintenance required in the Operator's Manual have been performed.
