Form No. 3372-551 Rev A TITAN ZX4820 Zero-Turn-Radius Riding Mower Model No. 74845—Serial No. 312000001 and Up To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com.
Introduction 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. Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage. You are responsible for operating the product properly and safely.
This manual identifies potential hazards and has safety messages identified by the safety alert symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions. Using the Side Discharge .................................... 28 Operating Tips ................................................... 28 Maintenance............................................................... 30 Recommended Maintenance Schedule(s) ................
Safety • Never leave a running machine unattended. Always turn off blades, set parking brake, stop engine, and remove key before dismounting. • Turn off blades when not mowing. Stop the engine, wait for all parts to come to a complete stop and remove the key before cleaning the machine, removing the grass catcher or unclogging the discharge chute. • Operate the machine only in daylight or good artificial light. • Do not operate the machine while under the influence of alcohol or drugs.
• Keep children out of the mowing area and under the watchful care of another responsible adult, not the operator. • Be alert and turn the machine off if children enter the area. • Before and while backing or changing direction, look behind, down, and side-to-side for small children. • Never carry children, even with the blades off. They may fall off and be seriously injured or interfere with safe machine operation.
• Never refuel the machine indoors. • Maintain or replace safety and instruction decals as necessary. • Never store the machine or fuel container inside where there is an open flame, such as near a water heater or furnace. • Use only genuine Toro replacement parts to ensure that original standards are maintained. • Never fill containers inside a vehicle or on a truck or trailer with a plastic liner. Always place containers on the ground away from your vehicle before filling.
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. 93-7009 1. Warning—don't 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. 112-9840 1. Read the Operator's Manual. 3.
117-1158 1. Bypass lever position for operating the machine 2. Bypass lever position for pushing the machine 117-1194 1. Engine 117-5344 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 1. Lock 2. Read the Operator's Manual 5. Fast 6. Continuous variable setting 7. Slow 117–2718 Manufacturer's Mark 1. Indicates the blade is identified as a part from the original machine manufacturer.
7-3069 1. Warning–there is no rollover protection when the roll bar is down. 2. To avoid injury or death from a rollover accident, keep the roll bar in the fully raised and locked position and wear the seat belt. Lower the roll bar only when absolutely necessary; do not wear the the seat belt when the roll bar is down. 3. Read the Operator's Manual; drive slowly and carefully. 115-9644 1. Press the pedal and lift the height of cut lever to unlock the deck position. 2. Height of cut 3.
Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystandersa 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. Wear eye protection 8. Battery acid can cause blindness or severe burns. 9. Flush eyes immediately with water and get medical help fast. 5. Read the Operator's Manual. 10. Contains lead; do not discard.
0-5466 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.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure Description 1 2 3 Use Qty. No parts required – Connect the battery. No parts required – Check the mower adjustment. Ignition Key Hose coupling Operator's Manual Engine Operator's Manual Operator Training Material 1 1 1 1 1 Complete the Setup. 1 2 Connecting the Battery Checking the Mower Adjustment No Parts Required No Parts Required Procedure Procedure 1.
Review the Remaining Parts 3 Keep all the following items with the machine: • Ignition Key Completing the Setup • Hose coupling • Operator's Manual Parts needed for this procedure: 1 Ignition Key 1 Hose coupling 1 Operator's Manual 1 Engine Operator's Manual 1 Operator Training Material • Engine Operator's Manual • View the Operator training material.
Product Overview 2 3 4 1 5 6 10 G015763 9 7 8 Figure 5 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 6 1. Mower Deck 3. Engine 2. Drive wheel 4.
Controls switch (PTO) is engaged. Use these times for scheduling regular maintenance (Figure 7). Become familiar with all the controls before you start the engine and operate the machine (Figure 7). 1 2 Fuel Gauge The fuel window located below the operator position can be used to verify the level of gasoline in the tank (Figure 8). 3 1 5 4 g017722 Figure 7 1. Throttle control 4. Ignition switch 2. Choke 5. Blade control switch (PTO) 3. Hour meter G010077 Figure 8 Ignition Switch 1.
Height-of-Cut Lever Operation The height-of-cut lever works with the foot pedal to lock the deck in a specific cutting height. Only adjust the height of cut while machine is not moving (Figure 5). Note: Determine the left and right sides of the machine from the normal operating position. Attachments/Accessories Think Safety First A selection of Toro approved attachments and accessories are available for use with the machine to enhance and expand its capabilities.
1 2 3 G015033 Figure 9 1. Safe Zone-use the machine here 2. Use walk behind mower and/or hand trimmer near drop-offs and water. 3. Water G015034 Figure 10 Important: Always use the seat belt with the roll bar in the fully raised position. Using the Rollover Protection System (ROPS) 3. Install the locking pins. Secure the pins by installing the hair cotter pin (Figure 11).
Adding Fuel DANGER • For best results, use only clean, fresh, unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method). 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. • Always place gasoline containers on the ground away from your vehicle before filling.
Note: A fuel stabilizer/conditioner is most effective when mixed with fresh gasoline. To minimize the chance of varnish deposits in the fuel system, use fuel stabilizer at all times. 1 2 Fuel Gauge Use the fuel window below the operator to verify the level of gasoline before filling the tank (Figure 12). 3 1 4 G010475 Figure 13 G010077 Figure 12 1. Fuel gauge window 3. Install the fuel tank cap securely and tighten until it “clicks”. Wipe up any gasoline that may have spilled.
Releasing the Parking Brake 1 2 1 G010079 Figure 15 Operating the Throttle 2 The throttle control can be moved between Fast and Slow positions (Figure 16). G008959 Figure 17 Always use the fast position when turning on the mower deck with the blade control switch (PTO). 1. On 2. Off Operating the Ignition Switch 1. Turn the ignition key to the Start position (Figure 18). When the engines starts, release the key. G008946 Important: Do not engage starter for more than 5 seconds at a time.
Starting and Stopping the Engine on the Choke control and let the engine run for a few seconds. Then push down the Choke control. Repeat as required. Starting the Engine Note: Additional starting cycles may be required when starting the engine for the first time after the fuel system has been without fuel completely. 1. Sit down on the seat (Figure 19) and fasten the seat belt. 2. Move the motion controls outward to the neutral lock position (Figure 19). 3.
3 Disengaging the Blade Control Switch (PTO) 2 1 00:60 Sec 4 G009174 Figure 23 T AR ST N RU O ST The Safety Interlock System P WARNING 5 If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury. • Do not tamper with the interlock switches. • Check the operation of the interlock switches daily and replace any damaged switches before operating the machine.
Using the Motion Control Levers Try starting the engine; the engine should not crank. Repeat with the other motion control lever. 3. While sitting on the seat, engage the parking brake, move the blade control switch to Off, and lock the motion control levers in neutral. Start the engine. While the engine is running, release the parking brake, engage the blade control switch, and rise slightly from the seat; the engine should stop. 4.
blade control switch (PTO), and turn the ignition key to off. Set the parking brake when you leave the machine; refer to Setting the Parking Brake. Remember to remove the key from the ignition switch. CAUTION Children or bystanders may be injured if they move or attempt to operate the tractor while it is unattended. Always remove the ignition key and set the parking brake when leaving the machine unattended, even if just for a few minutes.
Adjusting the Height-of-Cut 2. Remove the pin from the height-of-cut bracket (Figure 28). 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. 3. Select the lower hole on the lock decal and insert the pin (Figure 28). To lock the deck in the lowest height-of-cut position: 1.
Positioning the Seat Adjusting the Tilt The seat can move forward and backward. Position the seat where you have the best control of the machine and are most comfortable. The motion control levers can be tilted fore or aft for maximum operator comfort. 1. Loosen the upper bolt holding the control lever to the control arm shaft. While sitting in the operator's position, raise the seat adjustment lever slightly and move the seat forward or backward to the desired position (Figure 30). 2.
Pushing the Machine by Hand 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. • Never remove the grass deflector from the mower because the grass deflector routes material down toward the turf. If the grass deflector is ever damaged, replace it immediately. • Never put your hands or feet under the mower.
Mow at Correct Intervals Normally, mow every four days. But remember, grass grows at different rates at different times. So to maintain the same cutting height, which is a good practice, mow more often in early spring. As the grass growth rate slows in mid summer, mow less frequently. If you cannot mow for an extended period, first mow at a high cutting height; then mow again two days later at a lower height setting. Cutting Speed To improve cut quality, use a slower ground speed in certain conditions.
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 Clean the mower housing. Every 25 hours • Grease all lubrication points.
Figure 33 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. Greasing the Bearings 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. • Service decal 2.
Engine Maintenance Cleaning the Element Service Interval: Every 100 hours—Service the paper element. (more often in dusty, dirty conditions) WARNING Contact with hot surfaces may cause personal injury. Every 200 hours/Yearly (whichever comes first)—Replace the paper element. (more often in dusty, dirty conditions) Keep hands, feet, face, clothing and other body parts away the muffler and other hot surfaces. 1. Lightly tap the element on a flat surface to remove dust and dirt.
Changing the Engine Oil WARNING Service Interval: After the first 8 hours—Change the engine oil. Contact with hot surfaces may cause personal injury. Every 100 hours—Change the engine oil. (more often in dusty, dirty conditions) Keep hands, feet, face, clothing and other body parts away the muffler and other hot surfaces. Important: Do not overfill the crankcase with oil because damage to the engine may result. Do not run engine with oil below the low mark because the engine may be damaged.
4. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 39). 1 3 1 2 3 4 2 4 5 5 6 6 3/4 G008796 Figure 39 G008748 Figure 40 Changing the Engine Oil Filter Note: Ensure the oil filter gasket touches the engine and then an extra 3/4 turn is completed. Service Interval: Every 200 hours—Change the oil filter. (more often in dusty, dirty conditions) 3.
Removing the Spark Plug Installing the Spark Plug 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake. Tighten the spark plug(s) to 16 ft-lb (22 N-m). 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.
Fuel System Maintenance 5. Squeeze the ends of the hose clamps together and slide them away from the filter (Figure 45). 1 2 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. 3 • Perform any fuel related maintenance when the engine is cold. Do this outdoors in an open area. Wipe up any gasoline that spills.
Electrical System Maintenance WARNING Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. Servicing the Battery • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable. Service Interval: Monthly WARNING • Always Reconnect the positive (red) battery cable before reconnecting the negative (black) cable.
Installing the Battery 1. Position battery in the tray with the terminal posts opposite from the fuel tank (Figure 46). 2. First, install the positive (red) battery cable to positive (+) battery terminal. 3. Then install the negative battery cable to the negative (-) battery terminal. 4. Secure the cables with 2 bolts, 2 washers, and 2 locknuts (Figure 46). 5. Slide the red terminal boot onto the positive (red) battery post. Figure 47 6. Install the clamp and secure it with the wing nut (Figure 46). 1.
1 25 30 Drive System Maintenance 3 2 Checking the Tire Pressure Service Interval: Every 25 hours—Check tire pressure. 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 49). Check the tires when they are cold to get the most accurate pressure reading. 4 Refer to the maximum pressure suggested by the tire manufacturer on the sidewall of the caster wheel tires. G015037 Figure 48 1. 30 amp 3.
Hydraulic System Maintenance 2. Locate the filter and guards on each transaxle drive system (Figure 51). Remove three screws securing the filter guard and guard. 5 Oil Type: 20w-50 engine oil. G010254 Important: Use oil specified or equivalent. Other fluids could cause system damage. 1 Checking the Hydraulic Oil Level 2 Service Interval: Every 25 hours Check expansion reservoir and if necessary add 20W-50 engine oil to the FULL COLD line 3 1 3 4 Figure 51 Right side shown 2 1.
hydraulic filters and oil can result in irreparable damage to the transaxle drive system. 2 1 Bleeding the Hydraulic System 3 5 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. 4 6 1 G010333 Figure 53 1. Jacking points 3/4 2. Enter the operator's position. Start engine and move throttle control ahead to 1/2 throttle position. Disengage parking brake. G008748 Figure 52 A.
Mower Deck Maintenance 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. Figure 54 Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary.
3. Measure from the tip of the blade to the flat surface here. 1 1 G014973 3 2 G014973 3 Figure 58 2 1. Opposing blade edge, in position for measuring Figure 56 2. Level surface 3. Second measured distance between blade and surface (B) 1. Blade, in position for measuring 2. Level surface 3. Measured distance between blade and surface (A) WARNING A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders. 4.
Figure 61 1. Blade 2. Balancer Installing the Blades 1 1. Install the blade onto the spindle shaft (Figure 59). 2 Important: The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. 2. Install the spring disk and blade bolt (rotating it clockwise). The spring disk cone must be installed toward the bolt head (Figure 59). Torque the blade bolt to 100-110 ft-lb (135-150 N-m). 3 4 G010341 Figure 59 1. Sail Area of Blade 2. Blade 3. Curved washer 4.
are not within 3/16 inch (5 mm), an adjustment is required; continue to the Leveling procedure. Figure 63 1. Blades front to rear 3. Measure from the tip of the blade to the flat surface here Figure 62 1. Blades side to side 3. Measure from the tip of the blade to the flat surface here 2. Outside cutting edges 2. Outside cutting edges Leveling the Mower Deck 1. Set anti-scalp rollers to top holes or remove completely for this procedure. 2. Set the height-of-cut lever to the 3 inch (76 mm) position.
3. Lower the mower to the 3 inch (76 mm) height-of-cut position. 4. Remove the belt covers (Figure 66). then tighten the four leveling adjust locking nuts (Figure 65). 1 1 6 2 3 1 3 2 5 4 3 G010342 Figure 65 1. Deck lift arm 4. Slot in deck hanger 2. Deck hanger 5. Slot in rear deck hanger bracket 6. Rear deck hanger bracket 3. Leveling adjust locking nut G015789 Figure 66 1. Loosen the screws 2. Pivot the belt cover up 3. Remove belt cover 5. Using a spring removal tool, (Toro part no.
1. Move the spring loaded J-hooks out of the slot in the rear hanger brackets on both sides of the deck (Figure 69). 7. Remove the belt from the mower deck pulleys and remove the existing belt. 8. Install the new belt around the mower pulleys and the clutch pulley under the engine (Figure 67). 1 WARNING 2 The spring is under tension when installed and can cause personal injury. Be careful when removing the belt. 9. Using a spring removal tool, (Toro part no.
Note: Retain all parts for future installation. Installing the Mower Deck 1 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. 2 3 3. Slide the mower under the machine. 4 4. Lower the height-of-cut lever to the lowest position.
Cleaning 2 Washing the Underside of the Mower 1 Service Interval: Before each use or daily—Clean the mower housing. 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.
Storage 6. Disengage the blade control switch, stop the engine, and remove the ignition key. Wait for all moving parts to stop. Cleaning and Storage 7. Turn the water off and remove the coupling from the washout fitting. 1. Disengage the blade control switch (PTO), set the parking brake, and turn the ignition key to Off. Remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine and hydraulic system.
B. Run the engine to distribute conditioned fuel through the fuel system (5 minutes). 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.
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.
The Toro Total Coverage Warranty TimeCutter and TITAN Mowers Limited Warranty (see warranty periods below) Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly promise to the original purchaser to repair the Toro Products listed below if defective in materials or workmanship.
