Form No. 3352-217 Z420 TimeCutter) Z with Side Discharge Mower Model No. 74325—Serial No. 250000001 and Up Operator’s Manual Register your product at www.Toro.
Warning Driving Forward or Backward . . . . . . . . . . . . . . . Stopping the Machine . . . . . . . . . . . . . . . . . . . . . . Adjusting the Height of Cut . . . . . . . . . . . . . . . . . Positioning the Seat . . . . . . . . . . . . . . . . . . . . . . . Adjusting the Motion Control Levers . . . . . . . . . . Pushing the Machine by Hand . . . . . . . . . . . . . . . Adjusting the Footrest . . . . . . . . . . . . . . . . . . . . . Removing and Installing the Engine Hood . . . . . Side Discharge . . . .
Safe Operating Practices 1 The following instructions are from ANSI standard B71.1—2003. This product is capable of amputating hands and feet and throwing objects. Always follow all safety instructions to avoid serious injury or death. General Operation m–7865 • Read, understand, and follow all instructions in the operator’s manual and on the machine before starting. Figure 1 1. Model and serial number plate • Do not place hands or feet near rotating parts or under the machine.
• Do not mow near drop–offs, ditches, steep banks or water. Wheels dropping over edges can cause rollovers, which may result in serious injury, death or drowning. • Always wear eye protection when operating mower. • Data indicates that operators, age 60 years and above, are involved in a large percentage of riding mower–related injuries. These operators should evaluate their ability to operate the riding mower safely enough to protect themselves and others from serious injury.
• Use only genuine Toro replacement parts to ensure that original standards are maintained. • Use only an approved container. • Never remove the gas cap or add fuel when the engine is running. Allow the engine to cool before refueling. Do not smoke. Toro Riding Mower Safety • Never refuel the machine indoors. The following list contains safety information specific to Toro products or other safety information that you must know that is not included in the ANSI standards.
Slope Chart 7
Safety and Instruction 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. 68-3650 68-3660 105-7015 79-3140 108-2392 93-1122 106-2224 1. 2. 3. 4. Throttle Choke Fast Continuous variable setting 5. Slow 9 6. 7. 8. 9. 10. 11.
6-8743 1. Height of cut 108-6109 1. To push the machine, move bypass levers forward and then out to lock them into position Battery Symbols Some or all of these symbols are on your battery. 1. Explosion hazard 2. No fire, open flames, or smoking. 3. Caustic liquid/chemical burn hazard 4. Wear eye protection; explosive gases can cause blindness and other injuries 5. Wear eye protection 6. Read the Operator’s Manual. 106-8716 106-8742 1. Parking brake 107-7398 10 7.
Gasoline and Oil Recommended Gasoline Warning Use UNLEADED Regular Gasoline suitable for automotive use (87 pump octane minimum). Leaded regular gasoline may be used if unleaded regular is not available. Gasoline is harmful or fatal if swallowed. Long–term exposure to vapors can cause serious injury and illness. Important Never use methanol, gasoline containing methanol, or gasohol containing more than 10% ethanol because the fuel system could be damaged. Do not mix oil with gasoline.
Operation Controls Become familiar with all of the controls (Fig. 3 and 4) before you start the engine and operate the machine. Note: Determine the left and right sides of the machine from the normal operating position. 2 Think Safety First 3 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. 1 Danger Mowing on wet grass or steep slopes can cause sliding and loss of control.
2. Move the PTO to Off (Fig. 5). 2. Move the PTO (power take off) to Off (Fig. 5). 3. Turn the ignition key to Off (Fig. 7). 2 1 4. Pull the wire off of the spark plug(s) to prevent the possibility of someone accidentally starting the machine before transporting or storing the machine. 5. Close the fuel shut-off valve under the front of the fuel tank before transporting or storing the machine. m–4201 Figure 5 1.
Understanding the Safety Interlock System Forward 1. Move the levers to the center, unlocked position. The safety interlock system is designed to prevent the engine from starting unless: 2. To go forward, slowly push the motion control levers forward (Fig. 9). • The PTO is disengaged. 2 • The motion control levers are in the brake position.
Warning Children or bystanders may be injured if they move or attempt to operate the mower while it is unattended. Always remove the ignition key and move the motion control levers to the brake position when leaving the machine unattended, even if just for a few minutes.
Pushing the Machine by Hand Important Always push the machine by hand. Never tow the machine because damage may occur. To Push the Machine 1 1. Park the machine on a level surface and disengage the blade control (PTO). 2. Move the motion control levers outward to engage the parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. m–7872 3. Raise the seat to access the bypass levers (Fig. 13). Figure 11 4.
Adjusting the Footrest The footrest can be adjusted forward or backward for maximum operator comfort. 1 1. Lift up the footrest and place the rods in the same hole positions (Fig. 14). 2 1 3 2 m–6479 Figure 16 1. Engine hood 3 m–6423 Side Discharge Figure 14 1. Footrest 2. Rod The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. 3.
Cutting a Lawn for the First Time Keep the Underside of the Mower Clean Cut grass slightly longer than normal to ensure that the cutting height of the mower does not scalp any uneven ground. However, the cutting height used in the past is generally the best one to use. When cutting grass longer than six inches tall, you may want to cut the lawn twice to ensure an acceptable quality of cut. Clean clippings and dirt from the underside of the mower after each use.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule Maintenance Service Interval Each use After first 5 hours Maintenance Procedure • Check the engine oil level. • Check the safety system. • Clean the mower housing. • Change the engine oil. Every 5 hours • Check the cutting blades. Every 25 hours • • • • • • Every 50 hours • Change the engine oil.2 Every 100 hours • • • • • Clean the cooling system.
Servicing the Engine Oil 1 2 Check the oil level daily or after every 8 hours. Change the oil after the first 5 operating hours and every 50 operating hours thereafter. Oil Type: Detergent oil (API service SF, SG, SH, SJ, or higher) Crankcase Capacity: 3 • 48 oz./1-1/2 qt. (1400 cc/1.4 l) when the filter is not changed; • 56 oz./1-3/4 qt. (1700 cc/1.7 l) when the filter is changed m–6439 Figure 17 1. Oil dipstick 2. Filler tube Viscosity: See the table below. 3.
2. Remove the old filter and wipe the filter adapter gasket surface (Fig. 20). 3. Disengage the PTO and set the parking brake. 4. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Apply a thin coat of clean oil to the rubber gasket on the replacement filter (Fig. 20). 5. Slide the drain hose over the drain valve. 6. Place a pan below the drain hose. Rotate oil drain valve to allow oil to drain (Fig. 19). 3 7.
Important worn. 2 1 Replace the foam element if it is torn or Cleaning the Paper Element: 1. Lightly tap the element on a flat surface to remove dust and dirt. 2. Carefully clean the rubber seal on the paper element to prevent debris from entering the engine. 3. Inspect the element for tears, an oily film, and damage to the rubber seal. Important Never clean the paper element with pressurized air or liquids, such as solvent, gas, or kerosene.
Servicing the Cutting Blades 1 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. 2 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.
Checking for Bent Blades 1. Rotate the blades until the ends face forward and backward (Fig. 26). Measure from a level surface to the cutting edge, position 1, of the blades (Fig. 26). Note this dimension. 2 m–6427 A 1 5 3 A 4 m–6430 Figure 27 1. Sail area of blade 2. Blade 3. Curved washer Sharpening the Blades 3 3 4. Blade bolt 5. Blade stiffener 1. Use a file to sharpen the cutting edge at both ends of the blade (Fig. 28). Maintain the original angle.
2. Install the blade stiffener, the curved washer (cupped side toward the blade) and the blade bolt (Fig. 27). Torque the blade bolt to 35–65 ft-lb (47–88 N⋅m). Greasing and Lubrication Lubricate the machine when shown on the Check Service Reference Aid decal (Fig. 30) located beneath the seat. Grease more frequently when operating conditions are extremely dusty or sandy. 1 Grease with No. 2 general purpose lithium base or molybdenum base grease. How to Grease m–6435 1.
Removing the Battery 3 2 Warning 1 Battery terminals or metal tools could short against metal machine components causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. 5 • When removing or installing the battery, do not allow the battery terminals to touch any metal parts of the machine. • Do not allow metal tools to short between the battery terminals and metal parts of the machine. 6 4 m–6414 Figure 32 1.
1. Remove the battery from the chassis; refer to Removing the Battery, page 26. 1. Tip the seat forward to see the battery. 2. Look at the side of the battery. The electrolyte must be up to the Upper line (Fig. 33). Do not allow the electrolyte to fall below the Lower line (Fig. 33). 2. Check the electrolyte level; refer to Checking the Electrolyte Level, page 26. 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.
3. Close the fuel shut-off valve located under the front of the fuel tank. 6. Install a new filter and move the hose clamps close to the filter (Fig. 35). 4. Loosen the hose clamp at the fuel filter and slide it up the fuel line away from the fuel filter (Fig. 35). 7. Open the fuel shut-off valve. 5. Pull the fuel line off of the fuel filter (Fig. 35). Checking the Tire Pressure Maintain the air pressure in the front and rear tires as specified. Uneven tire pressure can cause uneven cut.
1 2 Adjusting the Front-to-Rear Blade Slope m–6426 Check the front-to-rear blade level any time you install the mower. If the front of the mower is more than 5/16 inch (7.9 mm) lower than the rear of the mower, adjust the blade level using the following instructions: 3 3 2 3 1. Park the machine on a level surface and disengage the blade control (PTO). 2.
9. Measure from the tip of the front blade to the flat surface and the tip of the rear blade to the flat surface (Fig. 40). 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. 1 1 2 2 m–6427 3 2 1 1 3 2 4 m–4634 3 Figure 41 1. Locknut and adjusting nut 2. Front tire 3 3 13.
Removing the Mower Warning Note: Before removing the mower, make a note for which holes are used in the leveling brackets (Fig. 44). The spring is under tension when installed and can cause personal injury. 1. Park the machine on a level surface and disengage the blade control (PTO). Be careful when removing the spring. 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 position. 6.
7. Slide the mower rearward to remove the mower belt from the engine pulley. 8. Slide the mower out from underneath the machine. Note: Retain all parts for future installation. 4 Installing the Mower 1. Park the machine on a level surface and disengage the blade control (PTO). 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 position. 2 3 1 m–7874 Figure 45 3.
6. Place the spring on the rod, with end wires down, and between the grass deflector brackets. Slide rod through second grass deflector bracket and internal lock washer (Fig. 47). 4. Lower the mower to the lowest height-of-cut. 5. Sit on the seat and start the engine. Engage the PTO and let the mower run for one to three minutes. 6. Disengage the PTO, stop the engine, and remove the ignition key. Wait for all moving parts to stop. 7. Insert rod at front of grass deflector into short stand-off on deck.
Wiring Diagram 34
Cleaning and Storage 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. Disengage the PTO, set the parking brake, stop the engine, and remove the key. 12. Clean any dirt and chaff from the top of the mower. 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. 13.
Troubleshooting Problem The engine g overheats. The starter does not crank. The engine g will not start, starts h d or fails hard, f il to t keep k running. i Possible Causes Corrective Action 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 under the engine blower housing are plugged. 3. Remove the obstruction from the cooling fins and air passages. 4. The air cleaner is dirty. 4.
Problem The engine g loses power. p The machine does not drive. There is abnormal vibration. Uneven cutting g height. g Possible Causes Corrective Action 1. The engine load is excessive. 1. Reduce ground speed. 2. The air cleaner is dirty. 2. Clean the air cleaner element. 3. The oil level in the crankcase is low. 3. Add oil to the crankcase. 4. The cooling fins and air passages under the engine blower housing are plugged. 4. Remove the obstruction from the cooling fins and air passages. 5.
Problem The blades do not rotate. Possible Causes Corrective Action 1. The drive belt is worn, loose or broken. 1. Install a new drive belt. 2. The drive belt is off of the pulley. 2. Install the drive belt and check the adjusting shafts and belt guides for the correct position. 3. The mower belt is worn, loose, or broken. 3. Install a new mower belt.
Consumer TimeCutter Z The Toro Total Coverage Guarantee A Two-Year Full Warranty (Limited Warranty for Commercial Use) 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 any Toro product used for normal residential purposes* if defective in materials or workmanship.
