Form No. 3381-467 Rev B TimeCutter® ZS 4200S Riding Mower Model No. 74389—Serial No. 314000001 and Up Register at www.Toro.com.
Introduction WARNING 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. CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm.
Contents Washing the Underside of the Mower ........................44 Storage ........................................................................45 Cleaning and Storage ..............................................45 Troubleshooting ...........................................................46 Schematics ...................................................................48 Introduction .................................................................. 2 Safety ......................................
Preparation Safety • Evaluate the terrain to determine what accessories and Improperly using or maintaining this mower can result in injury. To reduce the potential for injury, comply with these safety instructions. • Toro designed and tested this mower for reasonably safe service; however, failure to comply with the following instructions may result in personal injury.
• Do not change the engine governor setting or overspeed • If fuel is spilled on clothing, change your clothing the engine. immediately. • Stop on level ground, disengage drives, engage the • Do not overfill fuel tank. Replace fuel cap and tighten parking brake (if provided), shut off the engine before leaving the operator's position for any reason, including emptying the catchers or unclogging the chute. securely.
Toro Mower Safety Slope Operation The following list contains safety information specific to Toro products and other safety information you must know. All slopes and ramps require extra caution. If you feel uneasy on a slope, do not mow it. • Remove obstacles such as rocks, tree limbs, etc. from the This product is capable of amputating hands and feet, and throwing objects. Always follow all safety instructions to avoid serious injury or death. mowing area. • Watch for holes, ruts or bumps.
Model 74389 specifications of our equipment. For peace of mind, insist on Toro genuine parts. • Check brake operation frequently. Adjust and service as Sound Pressure required. 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. Sound Power This unit has a guaranteed sound power level of 100 dBA, which includes an Uncertainty Value (K) of 1 dBA.
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. 106-8717 2. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts. 1. Read the instructions before servicing or performing maintenance. 2.
114-1606 1. Entanglement hazard, belt—keep all guards in place. 119-8814 1. Parking position 4. Neutral 2. Fast 3. Slow 5. Reverse 120-5469 1. Height-of-cut 119-8815 1. Parking position 4. Neutral 2. Fast 3. Slow 5. Reverse 121-2989 1. Bypass lever position for pushing the machine 10 2.
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. Wear eye protection 5. Read the Operator's Manual. 130-6877 8. Battery acid can cause blindness or severe burns. 9. Flush eyes immediately with water and get medical help fast. 1.
0-2239 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 maintenance; move the motion control levers to the park (brake) position, remove the ignition key and disconnect the spark plug wire. 6. Loss of traction/control hazard, slopes—loss of traction/control on a slope, disengage the blade control switch (PTO), proceed off the slope slowly. 3.
Product Overview Figure 4 7. Footrest 1. Deflector 4. Height-of-cut lever 2. Rear drive wheel 5. Operator seat 8. Engine 11. Engine guard 3. Motion-control levers 6. Smart Speed™ lever 9. Fuel-tank cap 12. Front caster wheels Controls 10. Control panel however, always remove the key when leaving the machine to prevent someone from accidentally starting the engine (Figure 5). Become familiar with all of the controls in Figure 4 andFigure 5 before you start the engine and operate the machine.
Smart Speed™ Control-System Lever Operation The Smart Speed™ Control-System lever, located below the operating position, gives the operator a choice to drive the machine at 2 speed ranges—high and low (Figure 6). Note: Determine the left and right sides of the machine from the normal operating position. Adding Fuel • For best results, use only clean, fresh (less than 30 days old), unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method).
of varnish deposits in the fuel system, use fuel stabilizer at all times. 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.
3. Install the fuel-tank cap securely, and tighten until it clicks. Checking the Engine-oil Level Before you start the engine and use the machine, check the oil level in the engine crankcase; refer to Checking the Engine-oil Level (page 28). Breaking In a New Machine New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing additional load on the engine.
Understanding the Safety-interlock System Starting the Engine 1. Sit down on the seat, and move the motion controls outward to the park position. WARNING 2. Disengage the blades by moving the blade control switch to Off (Figure 12) If safety-interlock switches are disconnected or damaged, the machine could operate unexpectedly causing personal injury. • Do not tamper with the interlock switches.
Note: When the engine starts, release the key. 3. Pull up on the blade-control switch to move it to the On position, and engage the blades (Figure 15). Important: Do not engage the starter for more than 10 seconds at a time. If the engine fails to start, allow a 60 second cool-down period between attempts. Failure to follow these instructions can damage the starter motor. Figure 15 1. Control panel 2.
4. Move either motion-control lever to the center, unlocked position. 5. Try starting the engine; the engine should not crank. 6. Repeat with the other motion-control lever. 7. While sitting on the seat, move the blade-control switch to Off, and lock the motion-control levers in the park position. 8. Start the engine. 9. While the engine is running, engage the blade-control switch, and rise slightly from the seat. Note: The engine should stop. 10.
Driving Backward WARNING 1. Move the levers to the center, unlocked position. 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. 2. To go backward, look behind you and down, as you slowly pull the motion-control levers rearward (Figure 20). Always stop the machine and move the motion-control levers to the park position before adjusting the Smart Speed™ Control System. 2.
Adjusting the Height-of-Cut Positioning the Seat Height-of-cut is controlled by the lever located to the right of the operating position (Figure 21). The seat can move forward and backward. Position the seat where you have the best control of the machine and are most comfortable. 1. Raise the seat and loosen the adjustment bolts just enough that seat can move (Figure 22). 3 1 2 1 G015319 Figure 21 G014477 1. Height-of-cut lever 3. 115 mm (4.5 inches)—transport position Figure 22 1.
3 4. Repeat the adjustment for the opposite control lever. Adjusting the Tilt 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. 2. Loosen the lower bolt just enough to pivot the control lever fore or aft (Figure 23). Tighten both bolts to secure the control in the new position. 3. Repeat the adjustment for the opposite control lever. 1 Pushing the Machine by Hand 2 g017303 Figure 24 1.
G009660 9. Lower the grass deflector over the discharge opening 1 Important: Ensure that the mower has a hinged grass deflector that disperses clippings to the side and down toward the turf, while in side-discharge mode. 2 3 Installing the Discharge Cover for Mulching 1. Park the machine on a level surface and disengage the blade-control switch. 2.
Operating Tips Note: Do not overtighten the nuts; this could distort the cover and cause blade contact. Using the Fast Throttle Setting 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.
Cutting Long Grass If the grass is ever allowed to grow slightly longer than normal, or if it contains a high degree of moisture, raise the cutting height higher than usual and cut the grass at this setting. Then cut the grass again using the lower, normal setting. Stopping If the machine's forward motion must be stopped while mowing, a clump of grass clippings may drop onto your lawn.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Interval Before each use or daily Maintenance Procedure • • • • • • Check the safety-interlock system. Check the air cleaner for dirty, loose or damaged parts. Check the engine-oil level. Clean the air-intake screen. Check the cutting blades. Inspect the grass deflector for damage After each use • Clean the mower-deck housing.
Premaintenance Procedures Lubrication Raising the Seat Service Interval: Every 25 hours—Grease all the lubrication points. Make sure that the motion-control levers are locked in the park position, and lift the seat forward. Grease Type: No. 2 General Purpose, Lithium-Base Grease 1. Park the machine on a level surface, and disengage the blade-control switch. 2.
Engine Maintenance 4. Clean all air-cleaner components of any accumulated dirt or foreign material. Servicing the Air Cleaner Note: Prevent any dirt from entering the carburetor. 5. Install the air-cleaner element with the pleated side out and seat the rubber seal onto the edges of the air-cleaner base (Figure 30). Service Interval: Before each use or daily—Check the air cleaner for dirty, loose or damaged parts. This engine is equipped with a replaceable, high density paper-air-cleaner element.
2. Disengage the blade-control switch and move the motion controls outward to the park position. 1 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. 5. Locate the oil-drain hose, and slide it over the drain valve (Figure 33). 2 F 3 G005068 L 3 Figure 32 1. Oil dipstick 3. Engine-oil level 2. Filler tube 6. Remove the dipstick and check the oil level (Figure 32).
3 2 1 G005177 Figure 35 1. Oil filter 3. Adapter 2. Gasket 19. Slowly pour approximately 80% of the specified oil into the filler tube (Figure 32). 20. Install the oil-fill cap and dipstick, and push it firmly into place (Figure 32). Figure 34 1. Oil-drain valve 2. Machine frame 3. Oil-drain hose 4. Pan 5. Oil filter 21. Check the oil level (Figure 32); refer to Checking the Engine-oil Level (page 28). 22. Slowly add additional oil to bring it to the Full mark. 23.
1 16 ft-lb 22 N-m G014537 Figure 36 1. Spark plug and wire location G010687 Figure 38 Checking the Spark Plug Important: Do not clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks. Cleaning the Cooling System Clean the air-intake screen from grass and debris before each use. If you see light brown or gray on the insulator, the engine is operating properly.
Fuel System Maintenance 4. Squeeze the ends of the hose clamps together and slide them away from the filter (Figure 39). 5. Remove the filter from the fuel lines. 6. Install a new filter with the flow-direction arrow coming from the fuel tank and pointing to the engine. DANGER In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you, others, and can damage property. • Perform any fuel-related maintenance when the engine is cold.
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. WARNING • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable. CALIFORNIA Proposition 65 Warning Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm.
Charging the Battery Servicing the Fuses Service Interval: Before storage—Charge the battery and disconnect battery cables. The electrical system is protected by fuses. It requires no maintenance; however, if a fuse blows, check the component/circuit for a malfunction or short. 1. Remove the battery from the chassis; refer to Removing the Battery (page 33). Fuse type: 2. Charge the battery for a minimum of 1 hour at 6 to 10 amps.
Releasing the Electric Brake Drive System Maintenance The electric brake releases by manually rotating the link arms forward. Once the electric brake is energized the brake will reset. Checking the Tire Pressure To release the brake: 1. Locate the shaft on the electric brake where the brake-link arms are connected (Figure 44). 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.
Mower 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 45 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 (Figure 47). 1 1 G014973 3 2 G014973 3 Figure 49 2 1. Opposite blade edge (in position for measuring) Figure 47 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 the surface (A) A.
2. Install the blade stiffener, the curved washer (cupped side toward the blade), and the blade bolt (Figure 50). 3. Torque the blade bolt to 47 to 88 N-m (35 to 65 ft-lb). Leveling the Mower Deck Check to ensure that the mower deck is level any time you install the mower or when you see an uneven cut on your lawn. Figure 50 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 (page 36) before continuing. 4.
G005278 G015323 2 3 5 1 3 1 2 4 4 Figure 54 Mower decks with 3 Blades 1. Blades side to side 2. Sail area of blade 4 3 2 Figure 55 3. Outside cutting edges 1. Hanger bracket 4. Side locking nut. 4. Measure from the tip of the blade to the flat surface here 2. Slotted-adjustment position 5. Side carriage bolt 3. Fixed position 5. Measure between the outside cutting edges and the flat surface (Figure 53 and Figure 54). 9. Loosen the rear locking nut on the hanger bracket (Figure 56).
2 1 G009658 1 2 2 Figure 58 Mower decks with 2 Blades G015325 Figure 57 1. 6.35 mm (1/4 inch) 1. Blades front to rear 2. Measure from the tip of the blade to the flat surface here 2. 3.2 mm (1/8 inch) 3 13. Stop the deck at the adjusted position, and tighten the side locking nut on the hanger bracket to hold the new position (Figure 56). 2 14. Tighten the rear locking nut on the hanger bracket. 15.
3 3 1 1 2 2 G014634 Figure 60 1. Adjusting rod 3. Lock nut 2. Adjusting block G014635 Figure 61 7. To raise the front of the mower, tighten the adjustment nut. 1. Front support rod 3. Deck bracket 2. Locking nut 8. To lower the front of the mower, loosen the adjustment nut. 5. Carefully lower the front of the mower deck to the ground. 9. After adjustment, check the front-to-rear slope again, continue adjusting the nut until the front blade tip is 1.6 to 7.
Note: Retain all parts for future installation. 3 4 Installing the Mower 5 1. Park the machine on a level surface and disengage the blade-control switch. 6 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. 2 7 3. Slide the mower under the machine. 1 4. Lower the height-of-cut lever to the lowest position. 5.
Mower Belt Maintenance 2 Inspecting the Belts 5 Service Interval: Every 25 hours—Check the belts for wear or cracks. 1 3 4 Check the belts for cracks, frayed edges, burn marks, or any other damage. Replace damaged belts. 3 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. Replace the mower belt if any of these conditions are evident. 4 1.
Cleaning Note: If the mower is not clean after one washing, soak it and let it stand for 30 minutes. Then, repeat the process. Washing the Underside of the Mower 9. Run the mower again for 1 to 3 minutes to remove excess water. WARNING Service Interval: After each use—Clean the mower-deck housing. A broken or missing washout fitting could expose you and others to thrown objects or blade contact. Contact with blade or thrown debris can cause injury or death.
Storage 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 distribute the oil inside the cylinder. Install the spark plug(s). Do not install the wire on the spark plug(s). Cleaning and Storage 1. Disengage the blade control switch, move the motion controls outward to the park position, stop the engine, and remove the key. 12. Clean any dirt and chaff from the top of the mower. 13.
Troubleshooting Problem The engine overheats. Possible Cause 1. The engine load is excessive. 1. Reduce the ground speed. 2. The oil level in the crankcase is low. 3. The cooling fins and air passages under the engine-blower housing are plugged. 4. The air cleaner is dirty. 2. Add oil to the crankcase. 3. Remove the obstruction from the cooling fins and air passages. 5. Dirt, water, or stale fuel is in the fuel system. The starter does not crank.
Problem The cutting height is uneven. Possible Cause 1. The blade(s) is not sharp. 1. Sharpen the blade(s). 2. A cutting blade(s) is/are bent. 3. The mower is not level. 2. Install a new cutting blade(s). 3. Level the mower from side-to-side and front-to-rear. 4. Adjust the anti-scalp wheel height. 5. Clean the underside of the mower. 6. Adjust the tire pressure. 7. Contact an Authorized Service Dealer. 4. 5. 6. 7. The blades do not rotate. Corrective Action An anti-scalp wheel is not set correctly.
Schematics G014644 Electrical Diagram (Rev.
Notes: 49
Notes: 50
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Residential Products The Toro Warranty and The Toro GTS Starting Guarantee Conditions and Products Covered Owner Responsibilities 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 Manua
