Form No. 3354-621 Rev C TimeCutter® Z380 and Z420 Riding Mowers Model No. 74402—Serial No. 260000001 and Up Model No. 74403—Serial No. 260000001 and Up Register your product at www.Toro.
This spark ignition system complies with Canadian ICES-002 Figure 2 Introduction 1. Safety alert symbol. 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. 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.
Operating Tips .................................. 20 Maintenance...................................................... 22 Recommended Maintenance Schedule(s) ............................... 22 Premaintenance Procedures....................... 22 Removing and Installing the Engine Hood..................... 22 Lubrication................................................ 23 Greasing the Bearings ........................ 23 Engine Maintenance.................................. 23 Servicing the Air Cleaner ........
Safety ◊ being driven too fast; Safe Operation Practices for Ride-on (riding) Rotary Lawnmower Machines ◊ the type of machine is unsuitable for its task; ◊ inadequate braking; ◊ lack of awareness of the effect of ground conditions, especially slopes; This machine meets or exceeds European Standards in effect at the time of production. However, improper use or maintenance by the operator or owner can result in injury.
• Do not operate the engine in a confined space where dangerous carbon monoxide fumes can collect. • Mow only in daylight or in good artificial light. • Before attempting to start the engine, disengage all blade attachment clutches and shift into neutral. • Do not use on slopes of more than 12-1/2 degrees. • Remember there is no such thing as a safe slope. Travel on grass slopes requires particular care.
information that you must know that is not included in the CEN standard. • Engine exhaust contains carbon monoxide, which is an odorless, deadly poison that can kill you. Do not run engine indoors or in an enclosed area. • Keep hands, feet, hair and loose clothing away from attachment discharge area, underside of mower and any moving parts while engine is running. • Do not touch equipment or attachment parts which may be hot from operation. Allow to cool before attempting to maintain, adjust, or service.
Sound Power for Model 74403 This unit has a guaranteed sound power level of 100 dBA, based on measurements of identical machines per Directive 2000/14/EC. Vibration for Model 74403 This unit does not exceed a hand/arm vibration level of 4.66 m/s2, based on measurements of identical machines per Directive 98/37/EC. This unit does not exceed a whole body vibration level of .14 m/s2, based on measurements of identical machines per Directive 98/37/EC.
Slope Chart 8
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. 93-6677 1. Warning—don’t operate the mower with the deector up or removed; keep the deector in place. 2. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts. 93-7009 1. Warning—don’t operate the mower with the deector up or removed; keep the deector in place. 2.
6-2223 106-8742 1. Parking brake 106-2224 1. 2. 3. 4. 5. 6. Throttle 7. 8. Choke Fast 9. Continuous variable setting10. 11. Slow Power take-off (PTO), Blade control switch on some models 106-8743 Headlights Engine—stop Engine—run Engine—start Ignition 1. Height of cut Battery Symbols Some or all of these symbols are on your battery 108-6109 1. To push the machine, move tow levers forward and then out to lock them into position. 1. Explosion hazard 6. 2. No re, open ame, or smoking. 7. 3.
107-2514 1. Warning—read the instructions before servicing or performing maintenance; move the levers out to set the parking brake and remove the ignition key before leaving the machine. 2. Warning—read the Operator’s Manual. 3. Thrown object hazard, mower—keep the deector in place. 4. Tipping hazard, slopes greater than 12.5 degrees—do not drive the machine on a slope greater than 12.5 degrees. 5. Thrown object hazard—keep bystanders a safe distance from the machine and pick up debris before operating. 6.
Product Overview Figure 3 1. Seat 2. Control levers 3. Control panel 4. 5. 6. Height of cut lever Mower deck Footrest 7. Front caster wheel 8. Rear drive wheel 9. Cup holder 12 10.
Controls Become familiar with all of the controls Figure 5 and Figure 4 before you start the engine and operate the machine. Figure 4 1. Motion control lever 2. Height-of-cut lever 3. Gas tank cap Figure 5 1. Ignition switch 2. Throttle/Choke 3. Blade control switch (power take-off) Parking Brake The parking brake is automatically set when the motion control levers are in the brake position.
Operation Recommended Gasoline Note: Determine the left and right sides of the machine from the normal operating position. Use UNLEADED Regular Gasoline suitable for automotive use (87 pump octane minimum). Leaded regular gasoline may be used if unleaded regular is not available. Think Safety First 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.
• Cleans the engine while it runs • Eliminates gum-like varnish buildup in the fuel system, which causes hard starting 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. Important: Do not use fuel additives containing methanol or ethanol. Add the correct amount of gas stabilizer/conditioner to the gas.
Stopping the Engine 1. Move the throttle lever to Fast (Figure 8). 2. Disengage the blades by moving the blade control switch to Off (Figure 7). 3. Turn the ignition key to Off (Figure 9). Figure 7 1. Blade control switch—On 2. 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. Blade control switch—Off 3. Move the throttle lever to Choke before starting a cold engine (Figure 8). 5.
The Safety Interlock System Driving Forward or Backward 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. If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury. • Do not tamper with the interlock switches.
To stop, pull the motion control levers to neutral. Backward 1. Move the levers to the center, unlocked position. 2. To go backward, slowly pull the motion control levers rearward (Figure 11). To go straight, apply equal pressure to both motion control levers (Figure 11). To turn, release the pressure on the motion control lever toward the direction you want to turn (Figure 11). To stop, push the motion control levers to neutral. Figure 12 1.
Adjusting the Motion Control Levers 4. Move the two bypass levers forward and then outward to lock them in place as shown in Figure 15. The motion control levers can be adjusted higher or lower for maximum operator comfort. 5. Move the motion control levers inward to disengage the parking brake. 1. Remove the 2 bolts holding the control lever to the control arm shaft (Figure 14). The machine is now able to be pushed by hand. 2. Move the control lever to the next set of holes.
have one side of the mower free from uncut grass, which allows air to be drawn into the mower. Cutting a Lawn for the First Time 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. Figure 16 1. Footrest 2. Rod 3.
When Stopping If the machine’s forward motion must be stopped while mowing, a clump of grass clippings may drop onto your lawn. To avoid this, move onto a previously cut area with the blades engaged. Keep the Underside of the Mower Clean Clean clippings and dirt from the underside of the mower after each use. If grass and dirt build up inside the mower, cutting quality will eventually become unsatisfactory.
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 After the rst 8 operating hours • Change the engine oil. Before each use or daily • Check the engine oil level. • Check the cutting blades. • Clean the mower housing. Every 25 hours • • • • Every 50 hours • Change the engine oil. • Check the battery electrolyte level.
Figure 17 1. Engine hood 2. Knob Figure 19 2. To install the hood, put the hooks into the slots and slide forward (Figure 18). 3. Tighten the knobs in the engine hood (Figure 17). 1. Front caster tire Figure 20 4. Connect a grease gun to each fitting (Figure 19 and Figure 20). Pump grease into the fittings until grease begins to ooze out of the bearings. 5. Wipe up any excess grease. Figure 18 1. Engine hood 2.
Cleaning the Foam Element wait for all moving parts to stop before leaving the operating position. 1. Wash the foam element in liquid soap and warm water. When the element is clean, rinse it thoroughly. 3. Clean around the air cleaner to prevent dirt from getting into the engine and causing damage. Pull up on the air cleaner cover handle and rotate it toward the engine (Figure 21). Remove the air cleaner cover. 2. Dry the element by squeezing it in a clean cloth. Do not oil the element.
Figure 25 1. Figure 23 Metal end Important: Do not overfill the crankcase with oil because the engine may be damaged. 1. Park the machine on a level surface, disengage the blade control switch, stop the engine, and remove the key. 2. Clean around the oil dipstick (Figure 24) so that dirt cannot fall into the fill hole and damage the engine. Changing the Oil 1. Start the engine and let it run until warm. This warms the oil so it drains better. 2.
7. When oil has drained completely, close the drain valve. tighten the filter an additional 1/2 to 3/4 turn (Figure 27). 5. Fill the crankcase with the proper type of new oil; refer to Changing and Draining the Oil in Engine Maintenance, page 23. 8. Remove the drain hose (Figure 26). Note: Dispose of the used oil at a recycling center. 9. Change the oil filter, if necessary (Figure 27). Servicing the Spark Plug 10. Clean around the oil dipstick and unscrew the cap (Figure 24).
Important: Never clean the spark plug. Always replace the spark plug when it has a black coating, worn electrodes, an oily film, or cracks. 1. Park the machine on a level surface and disengage the blade control switch. 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. Check the gap between the center and side electrodes (Figure 29).
wait for all moving parts to stop before leaving the operating position. 4. Disconnect the negative (black) ground cable from the battery post (Figure 31). 3. Close the fuel shut-off valve located under the front of the fuel tank. Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. 4. Squeeze the ends of the hose clamps together and slide them away from the filter (Figure 30). 5.
Checking the Battery Electrolyte Level 3. Remove the vent caps from the battery (Figure 32). 4. Slowly pour distilled water into each battery cell until the electrolyte level is up to the Upper line (Figure 32) on the battery case. Battery electrolyte contains sulfuric acid which is a deadly poison and causes severe burns. Important: Do not overfill the battery because electrolyte (sulfuric acid) can cause severe corrosion and damage to the chassis.
1. Raise the seat to gain access to the fuse holder (Figure 34). 2. To replace a fuse, pull out on the fuse to remove it (Figure 34). Figure 33 1. Positive battery post 2. Negative battery post 3. 4. Red (+) charger lead Black (-) charger lead 5. Install the battery in the machine and connect the battery cables; refer to Installing the Battery. Note: Do not run the machine with the battery disconnected, electrical damage may occur. Figure 34 Installing the Battery 1.
sharpen the blades; refer to Sharpening the Blades. 2. Inspect the blades, especially the curved area (Figure 36). If you notice any damage, wear, or a slot forming in this area (item 3 in Figure 36), immediately install a new blade. Figure 35 1. Valve stem Mower Maintenance Figure 36 Servicing the Cutting Blades 1. 2. Maintain sharp blades throughout the cutting season because sharp blades cut cleanly without tearing or shredding the grass blades.
A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders. Figure 39 • Always replace bent or damaged blade with a new blade. 1. Sharpen at original angle • Never file or create sharp notches in the edges or surfaces of 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.
3. Check the air pressure of all four tires. If needed, adjust to the recommended inflation; refer to Checking the Tire Pressure in Drive System Maintenance, page 30. 4. Set the height-of-cut lever to position D [3 inch (76 mm)]. 5. Carefully rotate the blade(s) side to side (Figure 41). 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.
refer to Checking the Tire Pressure in Drive System Maintenance, page 30. 4. Check and adjust the side-to-side blade level if you have not checked the setting; refer to Leveling the Mower from Side-to-Side. 5. Measure the length of the rod extending out of the adjusting block on the sides of the chassis (Figure 44). 6.
level of the mower; refer to Leveling the Mower from Side-to-Side. Removing the Mower Note: Before removing the mower, make a note for which holes are used in the leveling brackets (Figure 48). 1. Park the machine on a level surface and disengage the blade control switch. Figure 48 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. 38 inch leveler bracket shown 1. 2. 3.
wait for all moving parts to stop before leaving the operating position. 3. Slide the mower under the machine. 4. Lower the height-of-cut lever to the lowest position. 5. Attach the adjusting rod to the machine with the washer and hairpin cotter (Figure 48) on each side of the mower. 6. Slide the leveling brackets onto the mounting pins and secure them with the washers and hairpin cotters (Figure 48). 7. Attach the front support rods to the machine with the clevis pins and hairpin cotters (Figure 47). 8.
Slide rod through second grass deflector bracket and internal lock washer (Figure 50). 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 50). Important: The grass deflector must be spring loaded in the down position. Lift the deflector up to test that it snaps to the full down position. Figure 51 1. 2. Washout tting Coupling 3. Hose 4. Lower the mower to the lowest height-of-cut. 5.
Storage Stop the engine, allow it to cool, and drain the fuel tank; refer to Draining the Fuel Tank in Fuel System Maintenance, page 27. Cleaning and Storage Restart the engine and run it until it stops. 1. Disengage the blade control switch, set the parking brake, stop the engine, and remove the key. Choke or prime the engine. Start and run the engine until it will not start. Operate the primer, if equipped, several times to ensure no fuel remains in the primer system. 2.
Troubleshooting Problem The engine overheats. Possible Cause 1. The engine load is excessive. 2. The oil level in the crankcase is low. 3. The cooling ns and air passages under the engine blower housing are plugged. 4. The air cleaner is dirty. 5. Dirt, water, or stale fuel is in fuel system. The starter does not crank 1. The blade control switch is engaged. 2. The motion control levers are not in the brake position. 3. The operator is not seated. 4. The battery is dead. 5.
Problem Possible Cause Corrective Action The engine will not start, starts hard, or fails to keep running. 1. The fuel tank is empty. 1. Fill the fuel tank. 2. The fuel valve turned off. 2. Open the fuel valve. 3. The choke is not on. 3. Move the choke lever to On. 4. The air cleaner is dirty. 4. Clean or replace the air cleaner element. 5. The spark plug wire(s) is 5. Install the wire(s) on the loose or disconnected. spark plug. 6. Install a new, correctly 6. The spark plug(s) is gapped spark plug(s).
Problem Possible Cause Corrective Action There is abnormal vibration. 1. The engine mounting bolts are loose. 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. 1. Tighten the engine mounting bolts. 2. Tighten the appropriate pulley. 3. Contact an Authorized Service Dealer. 4. Install a new cutting blade(s). 5. Tighten the blade mounting bolt. 6.
Schematics Electrical Diagram (Rev.
