1. Manuals
  2. Brands
  3. Toro Manuals
  4. Lawn Mower
  5. 74437
  6. Operator's manual

Toro 74437 Operator's Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Form No. 3367-683 Rev A
TimeCutter
®
ZD420T Riding
Mower
Model No. 74437—Serial No. 311000001 and Up
To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com.
Original Instructions (EN)

Advertisement

Table of Contents
loading

Related Manuals for Toro 74437

Summary of Contents for Toro 74437

  • Page 1 Form No. 3367-683 Rev A TimeCutter ® ZD420T Riding Mower Model No. 74437—Serial No. 311000001 and Up To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com. Original Instructions (EN)

  • Page 2: Table Of Contents

    Safety ................3 additional information, contact an Authorized Service Safe Operation Practices for Ride-on (riding) Dealer or Toro Customer Service and have the model Rotary Lawnmower Machines......3 and serial numbers of your product ready. Figure 1 Safe Operating Practices ........3 identifies the location of the model and serial numbers Toro Riding Mower Safety ........

  • Page 3: Safety

    Safety Lubrication............. 26 Greasing the Bearings......... 26 Engine Maintenance..........27 Safe Operation Practices Servicing the Air Cleaner ........27 for Ride-on (riding) Rotary Servicing the Engine Oil ........28 Servicing the Spark Plug ........29 Lawnmower Machines Fuel System Maintenance ........31 Draining the Fuel Tank........
  • Page 4 ◊ lack of awareness of the effect of ground – stay alert for humps and hollows and other conditions, especially slopes; hidden hazards; • Use care when pulling loads. ◊ incorrect hitching and load distribution. – Use only approved drawbar hitch points. Preparation –...

  • Page 5: Toro Riding Mower Safety

    The following list contains safety information specific to • Follow the manufacturer’s recommendations for Toro products or other safety information that you must wheel weights or counterweights to improve stability. know that is not included in the CEN standard.
  • Page 6 Uncertainty Value (K) = 1.0 m/s Measured values were determined according to the procedures outlined in EN 836. Whole Body Vibration Measured vibration level = 0.77 m/s Uncertainty Value (K) = 0.39 m/s Measured values were determined according to the procedures outlined in EN 836 (Riding &...

  • 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. 93-7010 1. Thrown object hazard—keep bystanders a safe distance from the machine.
  • Page 9 Battery Symbols Some or all of these symbols are on your battery 106-8742 1. Explosion hazard 6. Keep bystanders a safe 1. Parking brake 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 10 110-6567 1. Warning—read the Operator’s Manual. 2. Warning—read the instructions before servicing or performing maintenance; move the motion control levers to the brake position, remove the ignition key and disconnect the spark plug wire. 3. Cutting/dismemberment hazard, mower blade; entanglement hazard, belt—do not open or remove safety shields while engine is running.

  • Page 11: Product Overview

    Product Overview Figure 4 1. Motion control lever 7. Mower deck 4. Collection bag 10. Cup holder 2. Height-of-cut lever 5. DFS lever 8. Recycle-on-demand lever 11. Footrest 9. Rear drive wheel 12. Front caster wheel 3. Control panel 6. Operator’s position, seat G005884z Figure 5 Collection bag removed...

  • Page 12: Controls

    Controls the center position engages the parking brake and allows the operator to exit the machine (Figure 6). Become familiar with all of the controls in Figure 4, Figure 5, Figure 6 and Figure 7 before you start the Parking Brake engine and operate the machine.

  • Page 13: Operation

    Throttle/Choke Control Operation The throttle and choke is combined into one control Note: Determine the left and right sides of the lever. The throttle controls the engine speed and it has a machine from the normal operating position. continuous variable setting from Slow to Fast. Engage the choke by moving the lever past the Fast setting until Think Safety First it stops (Figure 7).

  • Page 14: Checking The Engine Oil Level

    Important: Never use methanol, fuel containing WARNING methanol, or gasohol containing more than 10% Fuel is harmful or fatal if swallowed. Long-term ethanol because the fuel system could be damaged. exposure to vapors can cause serious injury and Do not mix oil with fuel. illness.

  • Page 15: Starting And Stopping The Engine

    Starting and Stopping the Engine Starting the Engine Figure 12 1. Sit down on the seat and move the motion controls to the brake position. 1. Off 3. Start 2. Run 4. Ignition 2. Disengage the blades by moving the blade control switch to Off (Figure 10).

  • Page 16: Operating The Blades

    2. Move the throttle to the Fast position. 3. Pull out on the blade control switch to engage blades (Figure 14). Figure 13 1. Center unlock position 3. Backward Figure 14 2. Forward 4. Brake position 1. Blade control switch-On 2.

  • Page 17: Adjusting The Height Of Cut

    Understanding the Safety Interlock System The safety interlock system is designed to prevent the engine from starting unless: • The blades are disengaged. • The motion control levers are in the brake position. The safety interlock system also is designed to stop the engine when the control levers are out of the brake position and you rise from the seat when the blades are engaged.

  • Page 18: Operation In The Collection Mode

    Emptying the Collection System A. Raise the lever to the upright position to open the deck door and allow clippings to be Once the collection bag fills with enough grass to cover collected. one or both of the sensors and break the infrared beam B.
  • Page 19 Collection Bag Removing the Collection Chute The collection bag is retained in the engine cover by As you are bagging, a small amount of grass clippings seating the lever side pin into a holed bracket in the normally blow out the front of the mower. An excessive right hand side of the engine cover.
  • Page 20 6. Return to the machine. Inspect the internal engine compartment and clear any clippings or debris dislodged during chute removal. WARNING Debris built up in the engine compartment, if not removed, could be ignited by a hot engine. A fire in the engine compartment could can burn you and others and can damage property.

  • Page 21: Operation In The Recycler Mode

    or completely surround the housing by uncut grass. Always try to have one side of the mower deck free from uncut grass; allowing air to be drawn into the mower deck. When making an initial cut through the center of an uncut area, operate the machine slower and back up if the mower starts to clog.

  • Page 22: Adjusting The Motion Control Levers

    Adjusting the Motion Control The machine is now able to be pushed by hand. Levers 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 control arm shaft (Figure 22).

  • Page 23: Operating Tips

    This also helps disperse clippings which a blade is damaged or worn, replace it immediately with enhances decomposition and fertilization. a genuine Toro replacement blade. Mow at Correct Intervals Safe Towing Practices Normally, mow every four days. But remember, Tow only with a machine that has a hitch designed for grass grows at different rates at different times.

  • 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 • Change the engine oil. After the first 8 hours • Test the safety interlock system. •...

  • Page 25: Premaintenance Procedures

    Premaintenance Procedures Accessing the Machine Some internal components can be accessed by simply raising the seat. Use the following procedures to access to the internal components as needed when performing the maintenance procedures described in this manual. G005900 Figure 26 Removing the Engine Hood Remove the engine hood to gain access to the engine compartment.

  • Page 26: Lubrication

    Lubrication Greasing the Bearings Service Interval: Every 25 hours Grease the front caster pivots and wheels (Figure 30). 1. Park the machine on a level surface and disengage the blade control switch. G010222 2. Move the motion control levers to the brake position, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating Figure 28...

  • Page 27: Engine Maintenance

    Engine Maintenance Cleaning the Foam and Paper Elements 1. Foam Element Servicing the Air Cleaner A. Wash the foam element in liquid soap and warm water. When the element is clean, rinse Service Interval: Every 25 hours—Service the foam air it thoroughly.

  • Page 28: Servicing The Engine Oil

    1. Carefully slide the foam element onto the paper air cleaner element (Figure 32). 2. Place the air cleaner assembly onto the air cleaner base and install the wing nut (Figure 32). 3. Install the air cleaner cover and secure the latches (Figure 32).

  • Page 29: Servicing The Spark Plug

    G005674 5. Remove the engine hood and engine duct to access the engine the oil drain valve. 6. Place a pan below the drain hose. Open oil drain valve to allow oil to drain (Figure 37). Figure 38 1. Oil filter 2.
  • Page 30 3. Remove the engine hood and engine duct to access 2. Tighten the spark plug(s) to 16 ft-lb (22 N-m). the engine components. 3. Push the wire(s) onto the spark plug(s) (Figure 39). 4. Pull the wires off of the spark plugs (Figure 39). Clean around the spark plugs to prevent dirt from falling into the engine and potentially causing damage.

  • Page 31: Fuel System Maintenance

    Fuel System Maintenance Draining the Fuel Tank Service Interval: Before storage DANGER In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property. Figure 42 • Drain fuel from the fuel tank when the engine is cold.

  • Page 32: 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 43). 6. Remove the battery hold-down (Figure 43) and lift Servicing the Battery the battery from the battery tray. Check the electrolyte level in the battery every 25 hours.

  • Page 33: Servicing The Fuses

    2. Check the electrolyte level; refer to Checking the Electrolyte Level. 3. Make sure that the vent caps are installed in the battery. Charge the battery for 1 hour at 25 to 30 amps or 6 hours at 4-6 amps. Do not overcharge the battery.

  • Page 34: Drive System Maintenance

    Drive System 1. Raise the seat to gain access to the fuse holder (Figure 46). Maintenance 2. To replace a fuse, pull out on the fuse to remove it (Figure 46). Checking the Tire Pressure Service Interval: Every 25 hours Maintain the air pressure in the front and rear tires as specified.

  • Page 35: Mower Maintenance

    Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine Toro replacement Checking for Bent Blades blade. For convenient sharpening and replacement, you 1.

  • Page 36: Leveling The Mower From Side-To-Side

    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 37: Adjusting The Front-To-Rear Blade Slope

    Adjusting the Front-to-Rear 4. Set the height-of-cut lever to position D [3 inch (76 mm)]. Blade Slope 5. Carefully rotate the blade(s) side to side (Figure 53). Check the front-to-rear blade level any time you install Measure between the outside cutting edges and the mower.

  • Page 38: Removing The Mower

    10. Measure from the tip of the front blade to the flat surface and the tip of the rear blade to the flat surface (Figure 56). If the front blade tip is not 1/16-5/16 inch (1.6-7.9 mm) lower than the rear blade tip, adjust the front locknuts.

  • Page 39: Mower Belt Maintenance

    5. Remove the hairpin cotter and washer from the 5. Pull the idler arm in the direction shown in Figure 60 adjusting rod (Figure 59) on each side of the mower. and roll the belt off of the pulleys. 6. Remove the hairpin cotter and washer at the mower leveling brackets (Figure 59) on each side of the mower.

  • Page 40: Cleaning

    Cleaning 6. Attach the adjusting rod to the machine with the washer and hairpin cotter (Figure 59) on each side of the mower. Cleaning the Collection 7. Slide the leveling brackets onto the mounting pins Sensors and secure them with the washers and hairpin cotters (Figure 59).

  • Page 41: Storage

    Storage Cleaning and Storage 1. Disengage the blade control switch, set the parking brake, stop the engine, and remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine. Clean dirt and chaff from the outside of the engine cylinder head fins and blower housing.
  • Page 42 Important: Do not store stabilizer/conditioned fuel over 30 days. 11. Remove the spark plug(s) and check its condition; refer to Servicing the Spark Plug in the Engine Maintenance section. With the spark plug(s) removed from the engine, pour two tablespoons of engine oil into the spark plug hole.

  • 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.

  • Page 45: Schematics

    Schematics G005894 Electrical Diagram (Rev. A)
  • Page 46 Notes:...
  • Page 47 Spypros Stavrinides Limited Cyprus 357 22 434131 Surge Systems India Limited India 91 1 292299901 T-Markt Logistics Ltd. Hungary 36 26 525 500 Toro Australia Australia 61 3 9580 7355 Toro Europe BVBA Belgium 32 14 562 960 374-0269 Rev A...
  • Page 48 Repairs necessary due to improper fuel, contaminants in the fuel *Whichever occurs first. system, or failure to properly prepare the fuel system prior to any **Some engines used on Toro LCE Products are warranted by the engine manufacturer. period of non-use over three months. •...

This manual is also suitable for:

Timecutter zd420t

Table of Contents