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Summary of Contents for Toro 74389
- Page 1 Form No. 3375-732 Rev A TimeCutter ® ZS 4200S Riding Mower Model No. 74389—Serial No. 313000001 and Up *3375-732* A Register at www.Toro.com. Original Instructions (EN)
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Page 2: Table Of Contents
Figure 2 torque on this class of mower will be significantly lower. 1. Safety alert symbol. Go to www.Toro.com to view specifications on your mower model. This manual uses two other words to highlight information. Important calls attention to special mechanical information and Note emphasizes general information worthy of special attention. -
Page 3: Safety
Safety Raising the Seat ............25 Lubrication ...............25 Greasing the Bearings ..........25 Safe Operation Practices for Engine Maintenance ..........26 Servicing the Air Cleaner .........26 Ride-on (riding) Rotary Lawn Servicing the Engine Oil..........26 Mower Machines Servicing the Spark Plug ..........28 Cleaning the Blower Housing ........29 Fuel System Maintenance ...........30 This machine meets or exceeds European Standards in Replacing the In-line Fuel Filter ........30... -
Page 4: Maintenance And Storage
Preparation • When using any attachments, never direct discharge of material toward bystanders nor allow anyone near the • While mowing, always wear substantial footwear and long machine while in operation. trousers. Do not operate the equipment when barefoot or wearing open sandals. •... -
Page 5: Toro Riding Mower Safety
These can change the stability of the machine and cause Toro Riding Mower Safety loss of control. The following list contains safety information specific to Toro products or other safety information that you must know that is not included in the CEN standard. -
Page 6: Model 74389
Model 74389 Sound Pressure This unit has a sound pressure level at the operator’s ear of 88 dBA, which includes an Uncertainty Value (K) of 1 dBA. Sound power level was determined according to the procedures outlined in EN 836. -
Page 7: Slope Indicator
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. -
Page 8: Safety And Instructional Decals
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;... - Page 9 114-1606 1. Entanglement hazard, belt—keep all guards in place. 119-8814 1. Parking position 4. Neutral 2. Fast 5. Reverse 3. Slow 120-5469 1. Height-of-cut 119-8815 1. Parking position 4. Neutral 2. Fast 5. Reverse 3. Slow 121-2989 1. Bypass lever position for 2.
- Page 10 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 7. Wear eye protection; smoking. explosive gases can cause blindness and other injuries 3.
- Page 11 120-2239 1. Warning—read the Operator's Manual. 5. Warning—do not use split ramps, use a full ramps when transporting machine. 2. Warning—read the instructions before servicing or performing 6. Loss of traction/control hazard, slopes—loss of traction/control maintenance; move the motion control levers to the park on a slope, disengage the blade control switch (PTO), (brake) position, remove the ignition key and disconnect the proceed off the slope slowly.
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Page 12: Product Overview
Product Overview g020181 Figure 4 1. Deflector 4. Height of cut lever 7. Footrest 10. Engine 2. Rear drive wheel 5. Operator seat 8. Fuel tank cap 11. Front caster wheels 3. Motion control levers 6. Smart Speed™ lever 9. Control panel Controls however, always remove the key when leaving the machine to prevent someone from accidentally starting the engine... -
Page 13: Operation
Smart Speed™ Control System Lever Operation The Smart Speed™ Control System lever, located below the Note: Determine the left and right sides of the machine operating position, gives the operator a choice to drive the from the normal operating position. machine at two speed ranges, high and low (Figure 6). -
Page 14: Fuel Safety
DANGER 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. -
Page 15: Before Starting
The safety interlock system also is designed to stop the engine 2. Slowly add regular, unleaded gasoline until the fuel whenever the control levers are out of the park position and reaches the base of the filler neck (Figure 9). you rise from the seat. -
Page 16: Starting The Engine
Starting the Engine Important: Do not engage the starter for more than 10 seconds at a time. If the engine fails to 1. Sit down on the seat and move the motion controls start, allow a 60 second cool-down period between outward to the park position. -
Page 17: Testing The Safety Interlock System
3. While sitting on the seat, move the blade control switch to Off, and lock the motion control levers in the park position. Start the engine. While the engine is running, engage the blade control switch, and rise slightly from the seat;... - Page 18 WARNING Removing your hands from the motion control levers while the machine is in motion can result in a loss of control causing harm to you or bystanders. Always stop the machine and move the motion control levers to the park position before adjusting the Smart Speed™...
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Page 19: Stopping The Machine
G015319 G008953 Figure 19 Figure 20 To go straight, apply equal pressure to both motion 1. Height-of-cut lever 3. 115 mm (4.5 inch), control levers (Figure 19). Transport position 2. Height-of-cut positions To turn, release the pressure on the motion control lever toward the direction you want to turn. -
Page 20: Positioning The Seat
Adjusting the Motion Control Levers Adjusting the Height The motion control levers can be adjusted higher or lower for maximum operator comfort. 1. Remove the 2 bolts holding the control lever to the g019929 control arm shaft (Figure 23). Figure 21 2. -
Page 21: Grass Deflector
3. Locate the bypass levers on the frame on both sides of DANGER the engine. Without the grass deflector, discharge cover, or 4. Move the bypass levers forward through the key hole complete grass catcher assembly mounted in and down to lock them in place as shown in Figure place, you and others are exposed to blade contact 23Figure 24. - Page 22 G009660 Important: Ensure the mower has a hinged grass deflector that disperses clippings to the side and down toward the turf, while in side discharge mode. Installing the Discharge Cover for Mulching 1. Park the machine on a level surface and disengage the blade control switch.
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Page 23: Operating Tips
If a blade is damaged or worn, replace it immediately with a genuine Toro replacement blade. Cut 1/3 of the Grass Blade It is best to cut only about 1/3 of the grass blade. Cutting more than that is not recommended unless grass is sparse, or it is late fall when grass grows more slowly. -
Page 24: Maintenance
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Maintenance Procedure Interval • Check the safety interlock system. • Check the air cleaner for dirty, loose or damaged parts. •... -
Page 25: Premaintenance Procedures
Premaintenance Lubrication Procedures Greasing the Bearings Raising the Seat Service Interval: Every 25 hours—Grease all lubrication points. Make sure the motion control levers are locked in the park Grease Type: No. 2 General Purpose Lithium Base Grease position. Lift the seat forward. 1. -
Page 26: Engine Maintenance
Engine Maintenance 4. Clean all air cleaner components of any accumulated dirt or foreign material. Prevent any dirt from entering the carburetor. Servicing the Air Cleaner 5. Install the air cleaner element with the pleated side “out” and seat the rubber seal onto the edges of the air Service Interval: Before each use or daily—Check the air cleaner base (Figure 30). - Page 27 3. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 4. Clean the area around the drain valve and on the machine frame. Locate the oil drain hose and slide it over the drain valve (Figure 33).
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Page 28: Servicing The Spark Plug
G005177 Figure 35 1. Oil filter 3. Adapter 2. Gasket 14. Slowly pour approximately 80% of the specified oil into the filler tube (Figure 32). 15. Install the oil fill cap/dipstick and push firmly into Figure 34 place (Figure 32). 1. -
Page 29: Cleaning The Blower Housing
Cleaning the Blower Housing To ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times. Annually or every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and any other cooling shrouds. -
Page 30: Fuel System Maintenance
Fuel System 4. Squeeze the ends of the hose clamps together and slide them away from the filter (Figure 38). Maintenance 5. Remove the filter from the fuel lines. 6. Install a new filter with the flow direction arrow coming DANGER from the fuel tank and pointing to the engine. -
Page 31: Electrical System Maintenance
Electrical System 5. Slide the rubber cover up the positive (red) cable. Disconnect the positive (red) cable from the battery Maintenance post (Figure 39). Retain all fasteners. 6. Remove the battery hold-down (Figure 39) and lift the battery from the battery tray. WARNING CALIFORNIA Proposition 65 Warning... -
Page 32: Servicing The Fuses
Figure 40 1. Positive battery post 3. Red (+) charger lead G014921 2. Negative battery post 4. Black (-) charger lead Figure 41 1. Main-30 amp 2. Charge circuit-25 amp Note: Do not run the machine with the battery disconnected, electrical damage may occur. 4. -
Page 33: Drive System Maintenance
Drive System 2. Rotate the shaft forward to release the brake. Maintenance 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 42). -
Page 34: Mower Maintenance
If a blade is damaged or worn, replace 2. Curved area 4. Damage it immediately with a genuine Toro replacement blade. For convenient sharpening and replacement, you may want to keep extra blades on hand. Checking for Bent Blades... -
Page 35: Removing The Blades
The blades must be replaced if a solid object is hit, if the blade is out of balance, or the blade is bent. To ensure optimum performance and continued safety conformance of the machine, use genuine Toro replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards. -
Page 36: Leveling The Mower Deck
Leveling the Mower Deck Check to ensure the mower deck is level any time you install the mower or when you see an uneven cut on your lawn. 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. - Page 37 Note: Avoid placing the supports under any anti-scalp Use the notches on the welded bracket to measure rollers if present on the deck. the amount of adjustment. Each notch surface is equivalent to 0.25 inch, while a single side is 0.125 inch 7.
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Page 38: Removing The Mower
Removing the Mower 1. Park the machine on a level surface and disengage the blade control switch. G009658 2. Move the motion control levers outward to the park position, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. -
Page 39: Mower Belt Maintenance
(Figure 60). Check the belts for cracks, frayed edges, burn marks, or any 6. Using a spring removal tool, (Toro part no. 92-5771), other damage. Replace damaged belts. install the idler spring over the deck hook and placing tension on the idler pulley and mower belt ((Figure 60). -
Page 40: Installing The Mower
Installing the Mower 1. Park the machine on a level surface and disengage the blade control switch. 2. Move the motion control levers outward to the park position, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. -
Page 41: Cleaning
Cleaning 8. Run the mower again for one to three minutes to remove excess water. Washing the Underside of the WARNING Mower A broken or missing washout fitting could expose you and others to thrown objects or Service Interval: After each use—Clean the mower deck blade contact. -
Page 42: Storage
Storage section. With the spark plug(s) removed from the engine, pour two tablespoons of engine oil into the spark plug hole. Use the starter to crank the engine and Cleaning and Storage distribute the oil inside the cylinder. Install the spark plug(s). -
Page 43: Troubleshooting
Troubleshooting Problem Possible Cause Corrective Action The engine overheats. 1. The engine load is excessive. 1. Reduce ground speed. 2. The oil level in the crankcase is low. 2. Add oil to the crankcase. 3. The cooling fins and air passages 3. - Page 44 Problem Possible Cause Corrective Action There is abnormal vibration. 1. The engine mounting bolts are loose. 1. Tighten the engine mounting bolts. 2. The engine pulley, idler pulley, or blade 2. Tighten the appropriate pulley. pulley is loose. 3. The engine pulley is damaged. 3.
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Page 45: Schematics
Schematics G014644 Electrical Diagram (Rev. A) - Page 46 Notes:...
- Page 47 The Way Toro Uses Information Toro may use your personal information to process warranty claims, to contact you in the event of a product recall and for any other purpose which we tell you about. Toro may share your information with Toro's affiliates, dealers or other business partners in connection with any of these activities. We will not sell your personal information to any other company.
- Page 48 Toro's option, under warranty at no cost for parts the Operator's Manual have been performed.