Form No. 3359-795 Rev A TimeCutter® Z4220 Riding Mower Model No. 74363—Serial No. 280000001 and Up Register at www.Toro.com.
Warning CALIFORNIA Proposition 65 Warning The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Important: This engine is not equipped with a spark arrester muffler. It is a violation of California Public Resource Code Section 4442 to use or operate the engine on any forest-covered, brush-covered, or grass-covered land. Other states or federal areas may have similar laws. Figure 1 Under the seat 1.
Safety Controls ............................................................. 12 Operation................................................................... 13 Think Safety First ............................................... 13 Recommended Gasoline..................................... 13 Checking the Engine Oil Level............................ 15 Starting the Engine............................................. 15 Operating the Blades .......................................... 16 Stopping the Engine ...
• 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 and wait for all parts to come to a complete stop 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.
approved hitch. The following guidelines apply when towing with the approved hitch kit installed. • Tow only with a machine that has a hitch designed for towing. Do not attach towed equipment except at the hitch point. • Follow the manufacturer’s recommendation for weight limits for towed equipment and towing on slopes. • Never allow children or others in or on towed equipment. • On slopes, the weight of the towed equipment may cause loss of traction and loss of control.
• Use only Toro approved attachments. Warranty may be voided if used with unapproved attachments. • If loading the machine onto a trailer or truck, use a single, full-width ramp only. The ramp angle should not exceed 15 degrees. Note: Determine the left and right sides of the machine from the normal operating position.
Slope Chart 7
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. 114-1606 1. Entanglement hazard, belt—keep all guards in place. 106-8717 1. Read the instructions before servicing or performing maintenance. 2. Check tire pressure every 25 operating hours. 3. Grease every 25 operating hours. 4. Engine 93-7009 1.
112-9751 1. Parking position 2. Fast 3. Slow 4. Neutral 5. Reverse 112-9802 114-8531 1. Height-of-cut 1. Bypass lever position for operating the machine 2. Bypass lever position for pushing the machine 115-2500 1. Choke 2. Fast 3. Continuous variable setting 4. Slow 114-8532 5. Power take-off (PTO), Blade control switch on some models 6. Blade control switch—Off 7. Blade control switch—On 1.
115-2469 1. Warning—read the Operator’s Manual. 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. 3. Cutting/dismemberment hazard, mower blade; entanglement hazard, belt—do not open or remove safety shields while engine is running. 4. Tipping hazard—do not mow slopes greater than 15 degrees, avoid sudden and sharp turns while on slopes. 5.
Product Overview Figure 3 1. Footrest 2. Height of cut lever 3. Fuel gauge 7. Rear drive wheel 8. Washout fitting 9. Mower deck 4. Control panel 5. Motion control levers 6. Operator seat 10. Anti-scalp roller 11. Front caster wheel Figure 4 1. Motion control levers 2. Height of cut lever 3. Gas tank cap 4. Engine 5.
Controls reverse; wheel speed is proportional to the amount the lever is moved. Move the control levers outward from the center to the park position and exit the machine (Figure 15). Always position the motion control levers into the park position when you stop the machine or leave it unattended. Become familiar with all of the controls in Figure 3, Figure 4, and Figure 5 before you start the engine and operate the machine.
Operation Note: Determine the left and right sides of the machine from the normal operating position. 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. Figure 7 Mowing on wet grass or steep slopes can cause sliding and loss of control. 1. Safe Zone-use the TimeCutter here 2. Use walk behind mower and/or hand trimmer near drop-offs and water. 3.
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. 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. • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any gasoline that spills.
Add the correct amount of gas stabilizer/conditioner to the gas. allows gasoline to expand. Do not fill the fuel tank completely full. 4. Install the fuel tank cap securely. Wipe up any gasoline that may have spilled. 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.
3. Move the throttle lever to Choke before starting a cold engine (Figure 11). 2 Note: A warm or hot engine may not require choking. 2 3 1 4 5 6 1 3 G005058 G005057 4 2 Figure 12 1. Control panel 4. Off 2. Ignition key—run position 5. Run 3. Ignition key—start position 6. Start 5 5. After the engine starts, move the throttle lever to Fast (Figure 11). If the engine stalls or hesitates, move the throttle lever back to Choke for a few seconds. Repeat this as required. 6 Figure 11 1.
The Safety Interlock System If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury. 2 • Do not tamper with the interlock switches. G005059 1 • Check the operation of the interlock switches daily and replace any damaged switches before operating the machine. Figure 13 1. Control panel 2.
Driving Forward or Backward To turn, release pressure on the motion control lever toward the direction you want to turn (Figure 15). The throttle control regulates the engine speed as measured in rpm (revolutions per minute). Place the throttle control in the Fast position for best performance. Always operate in the full throttle position. The farther you move the motion control levers in either direction, the faster the machine will move in that direction.
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 control arm shaft (Figure 18). 2. Move the control lever to the next set of holes. Secure the lever with the 2 bolts (Figure 18). 1 3 Figure 16 1. Height-of-cut lever 2 4 2. Height-of-cut positions 2. To adjust the height of cut, pull inward and up on the lever and move it to the desired position.
To Push the Machine 1. Park the machine on a level surface and disengage the blade control switch. Without the 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. 2.
Mowing Direction grass brown at the edges, which slows growth and increases the chance of disease. 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 blade. Alternate mowing direction to keep the grass standing straight. This also helps disperse clippings which enhances decomposition and fertilization.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure Before each use or daily • • • • • • • Check the safety interlock system. Check the air cleaner for dirty, loose or damaged parts. Check the engine oil level. Check air intake and cooling areas, clean as necessary. Check the cutting blades. Inspect the grass deflector for damage Clean the mower housing.
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 park 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. • Serial plate 2.
Engine Maintenance 4. Connect a grease gun to each fitting (Figure 21 and Figure 22). Pump grease into the fittings until grease begins to ooze out of the bearings. Servicing the Air Cleaner 5. Wipe up any excess grease. 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. Check the air cleaner daily or before starting the engine.
Replace a dirty, bent, or damaged element. Handle new elements carefully; do not use if the rubber seal is damaged. 1 4. Clean all air cleaner components of any accumulated dirt or foreign material. 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 23). 2 6. Reinstall the air cleaner cover and secure with the two knobs (Figure 23).
2. Park the machine so that the drain side is slightly lower than the opposite side to assure the oil drains completely. 3. Disengage the blade control switch and move the motion controls outward to the park position. 4. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 5. 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 26). Figure 27 1. Oil drain valve 2.
1 3 2 1 G005177 G005070 Figure 28 1. Oil filter 2. Gasket Figure 29 3. Adapter 1. Spark plug and wire location 15. Slowly pour approximately 80% of the specified oil into the filler tube (Figure 25). 16. Install the oil fill cap/dipstick and push firmly into place (Figure 25). 17. Check the oil level (Figure 25); refer to Checking the Oil Level. 18. Slowly add additional oil to bring it to the full mark. 19. Install the oil fill cap/dipstick and push firmly into place (Figure 25).
Fuel System Maintenance Annually or every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and any other cooling shrouds. Clean the cooling fins and external surfaces as necessary. Make sure the cooling shrouds are reinstalled. Torque the blower housing screws to 5.5 ft-lb (7.5 N-m). 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.
Electrical System Maintenance 6 Warning 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. Wash hands after handling. 1 3 5 G005071 2 4 Charging the Battery Figure 31 1. Fuel line from tank 2. Hose clamp 3. Filter 4. Fuel line to engine 5. Flow direction arrow 6. Fuel tank Removing the Battery 4.
Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable. Figure 33 • Always connect the positive (red) battery cable before connecting the negative (black) cable. 1. Positive battery post 2. Negative battery post 5. Slide the rubber cover up the positive (red) cable.
Drive System 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 35). Check the tires when they are cold to get the most accurate pressure reading. G005073 Rear Tires: 13 psi (90 kPa) 1 2 Front Tires (caster wheels): 35 psi (241 kPa) Figure 34 1. Main-30 amp 2. Charge circuit-25 amp Figure 35 1.
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 36 1. Cutting edge 2. Curved area Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary.
A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders. Figure 39 1. Sharpen at original angle • Always replace bent or damaged blade with a new blade. 2. Check the balance of the blade by putting it on a blade balancer (Figure 40). If the blade stays in a horizontal position, the blade is balanced and can be used. If the blade is not balanced, file some metal off the end of the sail area only (Figure 39). Repeat this procedure until the blade is balanced.
5. Carefully rotate the blade(s) side to side (Figure 41). If both measurements are not within 3/16 inch (5 mm), an adjustment is required; continue with this procedure. 4 1 3 6 2 5 Figure 41 1. Blades side to side 2. Sail area of blade G005074 3. Measure here 6. Measure between the outside cutting edges and the flat surface (Figure 41). If both measurements are not within 3/16 inch (5 mm), an adjustment is required; continue with this procedure. Figure 42 1. Hanger bracket 2. Rear locking nut 3.
is 1/16-5/16 inch (1.6-7.9 mm) lower than the rear blade tip (Figure 43). 6. Measure from the tip of the front blade to the flat surface and the tip of the rear blade to the flat surface (Figure 43). 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 locknut. 10. When the front-to-rear blade slope is correct check the side-to-side level of the mower again; refer to Leveling the Mower from Side-to-Side. Removing the Mower 1.
The spring is under tension when installed and can cause personal injury. Be careful when removing the belt. 2 2 3 2 5 1 1 3 G005077 4 Figure 46 1. Mower deck 2. Hanger bracket 3. Rear lift rod 3 G005078 6. Slide the mower deck rearward to remove the mower belt from the engine pulley. 7. Slide the mower deck out from underneath the machine. Figure 47 1. Idler pulley 2. Mower belt 3. Outside pulley Note: Retain all parts for future installation. 4. Spring 5.
Replacing the Grass Deflector 6. Place the spring on the rod, with end wires down, and between the grass deflector brackets. Slide rod through second grass deflector bracket (Figure 48). Service Interval: Before each use or daily—Inspect the grass deflector for damage 7. Insert rod at front of grass deflector into short stand-off on deck. Secure rear end of rod into the mower with a nut (3/8 inch) (Figure 48).
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 8. Run the mower again for one to three minutes to remove excess water. Service Interval: Before each use or daily—Clean the mower housing. 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.
Storage Important: Do not store stabilizer/conditioned gasoline over 30 days. Cleaning and Storage 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. 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). 1.
Troubleshooting Problem The engine overheats. Possible Cause 1. The engine load is excessive. 1. Reduce 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 fuel system.
Problem There is abnormal vibration. Uneven cutting height. Possible Cause 1. The engine mounting bolts are loose. 1. Tighten the engine mounting bolts. 2. The engine pulley, idler pulley, or blade pulley is loose. 3. The engine pulley is damaged. 4. The cutting blade(s) is/are bent or unbalanced. 5. A blade mounting bolt is loose. 6. A blade spindle is bent. 2. Tighten the appropriate pulley. 1. The blade(s) is not sharp. 1. Sharpen the blade(s). 2. A cutting blade(s) is/are bent. 3.
Schematics Electrical Diagram (Rev.
Notes: 43
TITAN Z and TimeCutter Z Mowers The Toro Total Coverage Guarantee A Three-Year Limited Warranty (Limited Warranty for Commercial Use) Conditions and Products Covered The Toro Company and its afliate, Toro Warranty Company, pursuant to an agreement between them, jointly promise to repair any Toro Product used for normal residential purposes* if defective in materials or workmanship.
