With 52in, 60in or 72in turbo force side discharge mower (68 pages)
Summary of Contents for Toro 74271
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Z550 Z Master ® with 52in, 60in or 72in TURBO FORCE Side ® Discharge Mower Model No. 74271—Serial No. 280000001 and Up Model No. 74272—Serial No. 280000001 and Up Model No. 74273—Serial No. 280000001 and Up Register at www.Toro.com. Original Instructions (EN)
Whenever you need service, genuine Toro parts, or worthy of special attention. additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 Contents identifies the location of the model and serial numbers on the product.
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Using the Rollover Protection System Adjusting the Control Handle Neutral (ROPS) ............14 Position............42 Think Safety First ..........15 Hydraulic System Maintenance ....... 43 Operating the Parking Brake ....... 16 Checking the Hydraulic Fluid......43 Starting and Stopping the Engine ......17 Changing the Hydraulic Filter and Oil ....
Safety • Use extra care when handling gasoline and other fuels. They are flammable and vapors are explosive. Improper use or maintenance by the operator or owner – Use only an approved container can result in injury. To reduce the potential for injury, –...
• Be certain that the seat belt can be released quickly decals. in the event of an emergency. • Be aware there is no rollover protection when the • Use only Toro approved attachments. Warranty may roll bar is down. be voided if used with unapproved attachments.
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. 1-403005 54-9220 1-523552 58-6520 1. Grease 1-633462 66-1340 1-643339 68-8340...
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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 7. Wear eye protection; smoking. explosive gases can cause blindness and other injuries 3.
This switch is used to start the mower engine and has three positions: Start, Run and Off. Attachments/Accessories A selection of Toro approved attachments and accessories are available for use with the machine to enhance and expand its capabilities. Contact your...
Operation Authorized Service Dealer or Distributor or go to www.Toro.com for a list of all approved attachments and accessories. Note: Determine the left and right sides of the machine from the normal operating position. Adding Fuel Use unleaded regular gasoline suitable for automotive use (85 pump octane minimum).
Important: Do not use fuel additives containing methanol or ethanol. In certain conditions during fueling, static Add the correct amount of gas stabilizer/conditioner electricity can be released causing a spark to the gas. which can ignite the gasoline vapors. A fire Note: A fuel stabilizer/conditioner is most effective or explosion from gasoline can burn you and when mixed with fresh gasoline.
Important: Always use the seat belt with the roll bar in the raised position. There is no rollover protection when the roll bar is in the down position. • Lower the roll bar only when absolutely necessary. • Do not wear the seat belt when the roll bar is in the down position.
Operating on wet grass or steep slopes can This machine produces sound levels in excess cause sliding and loss of control. of 85 dBA at the operators ear and can cause hearing loss through extended periods of Wheels dropping over edges can cause rollovers, exposure.
Figure 11 Figure 9 1. Choke—on 2. Choke—off 1. Parking brake-ON 3. Brake Stop 2. Parking brake-OFF 5. Move the throttle control to the Fast position before starting a cold engine (Figure 12). Starting and Stopping the Engine Starting the Engine 1.
Engaging the PTO 1. If the engine is cold, allow the engine to warm up 5 to 10 minutes before engaging the PTO. 2. While seated in the seat, release the pressure on the traction control levers and place in neutral. 3.
• You are sitting on the seat. • The parking brake is engaged. Machine can spin very rapidly. Operator may • The power take off (PTO) is disengaged. lose control of machine and cause personal injury or damage to machine. •...
Children or bystanders may be injured if they move or attempt to operate the tractor while it is unattended. Always remove the ignition key and set the parking brake when leaving the machine unattended, even if just for a few minutes. Adjusting the Control Lever Resistance The top damper mounting bolt can be adjusted to...
Figure 17 1. Height of cut lever 2. Clevis Pin Figure 18 2. To adjust, remove the clevis pin from the height-of-cut bracket (Figure 17). 1. Outer roller 4. Bolt 2. Spacer 5. Nut 3. Select a hole in the height-of-cut bracket 3.
Figure 20 1. Cam lock 3. Rotate cam to increase or decrease locking pressure 2. Lever 4. Slot Figure 19 Positioning the Flow Baffle 1. Outer roller 4. Bolt 2. Spacer 5. Nut 3. Bushing The following figures are only recommendations for use.
Slide the seat to the desired position and release lever to lock in position. • Allows increased ground speed in heavy conditions. • This position is similar to the benefits of the Toro SFS mower. Figure 25 1. Adjustment lever Unlatching the Seat Push the seat latch rearward to unlatch the seat.
Figure 26 1. Seat latch 3. Seat 2. Fuel cap Pushing the Machine by Hand Figure 27 1. By-pass valve 2. Controls Important: Always push the machine by hand. Never tow the machine because hydraulic damage may occur. 3. Disengage parking brake before pushing. Pushing the Machine Changing to Machine Operation 1.
Without the grass deflector, discharge cover, Driving on the street or roadway without turn or complete grass catcher assembly mounted signals, lights, reflective markings, or a slow in place, you and others are exposed to blade moving vehicle emblem is dangerous and can contact and thrown debris.
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 Loading a unit onto a trailer or truck increases mower free from uncut grass, which allows air to be the possibility of backward tip-over and could drawn into the mower.
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.
Maintenance Recommended Maintenance Schedule(s) Maintenance Service Maintenance Procedure Interval • Change the engine oil. After the first 8 hours • Check the hydraulic fluid level. • Change the hydraulic filter. After the first 25 hours • Check the safety interlock system. •...
Lubrication Greasing and Lubrication Lubricate the machine when shown on the Check Service Reference Aid decal (Figure 29). Grease more frequently when operating conditions are extremely dusty or sandy. Grease Type: General-purpose grease. How to Grease 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake.
Engine Maintenance Servicing the Air Cleaner Note: Check the filter more frequently (every few hours) if operating conditions are extremely dusty or sandy. Removing the Filters 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake.
Replacing the Primary Air Filter Checking the Engine Oil Level Service Interval: Before each use or daily Service Interval: Every 250 hours Note: Check the oil when the engine is cold. Do not clean the primary filter. 1. Disengage the PTO, move the motion control levers Replacing the Safety Air Filter to the neutral locked position and set the parking brake.
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. 5. Slide the drain hose over the oil drain valve. 6. Place a pan below the drain hose. Rotate oil drain valve to allow oil to drain (Figure 34).
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Removing the Spark Plug 2. Check the gap between the center and side electrodes (Figure 38). Bend the side electrode (Figure 38) if 1. Disengage the PTO, move the motion control levers the gap is not correct. to the neutral locked position and set the parking brake.
Servicing the Fuel Tank Fuel System Maintenance In certain conditions, gasoline is extremely Replacing the Fuel Filter flammable and highly explosive. A fire or explosion from gasoline can burn you and Service Interval: Every 200 hours or yearly, whichever others and can damage property. occurs first.
Electrical System Maintenance Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, Servicing the Battery resulting in personal injury. • Always Disconnect the negative (black) Warning battery cable before disconnecting the positive (red) cable.
6. Remove both wing nuts (1/4 inch) securing the battery clamp (Figure 40). 7. Remove the battery. Installing the Battery 1. Position battery in the tray with the terminal posts toward the engine (Figure 40). 2. First, install the positive (red) battery cable to positive (+) battery terminal.
Drive System Check the pressure at the valve stem (Figure 44). Maintain the air pressure in the rear tires at 13 psi (90 Maintenance kPa). Uneven tire pressure can cause uneven cut. Check the tires when they are cold to get the most accurate Adjusting the Tracking pressure reading.
Figure 45 1. Slotted Nut 3. Hole in threaded shaft 2. Two threads or less 4. Washer (if needed) showing 5. Check the distance from bottom of slot in nut to inside edge of hole. Two threads or less should be showing (Figure 45).
Brake Maintenance Cooling System Maintenance Adjusting the Parking Brake Cleaning the Engine Screen Service Interval: Every 200 hours and the Oil Cooler Check the parking brake for proper adjustment. 1. Disengage brake lever (lever down). Service Interval: Before each use or daily 2.
Belt Maintenance Inspecting the Belts Service Interval: Every 100 hours Check belts for cracks, frayed edges, burn marks or any other damage. Replace damaged belts. 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.
Adjusting the Mower Belt Tension 1. Disengage the PTO, move the motion control levers to the neutral locked position, and set the parking brake. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.
Controls System Maintenance Adjusting the Control Handle Neutral Position If motion control levers do not align, or move easily into the console notch, adjustment is required. Adjust each lever, spring and rod separately. Figure 55 Note: Motion control levers must be installed correctly. 1.
Hydraulic System 9. Apply slight rearward pressure on the motion control lever, turn the head of the adjustment bolt Maintenance in the appropriate direction until the control lever is centered in the neutral lock position (Figure 58). Checking the Hydraulic Fluid Note: Keeping rearward pressure on the lever will keep the pin at the end of the slot and allow the Service Interval: After the first 8 hours...
Hydraulic fluid escaping under pressure can penetrate skin and cause injury. • If hydraulic fluid is injected into the skin it must be surgically removed within a few hours by a doctor familiar with this type of injury. Gangrene may result if this is not done.
Bleeding the Hydraulic System Setting the Hydraulic Pump Neutral Position The traction system is self bleeding, however, it may be necessary to bleed the system if fluid is changed or after Note: Adjust the handle neutral first. That needs to be work is performed on the system.
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Figure 63 1. Clevis pin in slot 7. Spring Figure 62 2. Nut against yoke 8. Pivot shaft 1. Pump rod 4. Ball joint 3. Adjustment bolt 9. Yoke 2. Double nuts 5. Yoke 4. Pump rod 10. Locknut 3. Lock nut 6.
Mower Deck 7. After both pump neutrals are set, shut off the machine. Maintenance 8. Remove the jumper wire from the wire harness connector and plug the connector into the seat switch. Leveling the Mower at Three 9. Install the seat rod and lower the seat into position. Positions 10.
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8. Loosen the jam nut under the rear support arm and adjust the adjustment bolt to get a measurement of 3-1/8 to 3-1/4 inches (80 to 83 mm)(Figure 65). Note: It is recommended that both sides of the mower are adjusted the same distance. 9.
File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, Adjusting the Compression Spring replace it immediately with a genuine Toro replacement blade. For convenient sharpening and replacement, you 1. Raise the mower lift lever to the transport position.
If you notice any damage, wear, or a slot forming in performance and continued safety conformance of this area (Figure 68), immediately install a new blade. the machine, use genuine Toro replacement blades. Replacement blades made by other manufacturers may Checking for Bent Blades result in non-conformance with safety standards.
Replacing the Grass Deflector An uncovered discharge opening could allow the lawn mower to throw objects in the Figure 70 operator’s or bystander’s direction and result in serious injury. Also, contact with the blade 1. Sharpen at original angle could occur. •...
Waste Disposal Cleaning Engine oil, batteries, hydraulic oil, and engine coolant Cleaning the Hydraulic Pump are pollutants to the environment. Dispose of these according to your state and local regulations. Shrouds Service Interval: Before each use or daily 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake.
Storage C. Stop engine, allow to cool and drain the fuel tank; refer to Servicing the Fuel Tank in Fuel System Maintenance , page 34. 1. Disengage the power take off (PTO), set the parking brake and turn the ignition key to off. Remove spark D.
Troubleshooting Problem Possible Cause Corrective Action Starter does not crank 1. Blade control (PTO) is engaged. 1. Move blade contro (PTO) to disengaged. 2. Parking brake is not on. 2. Set the parking brake. 3. Operator is not seated. 3. Sit on the seat. 4.
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Problem Possible Cause Corrective Action Uneven cutting height. 1. Blade(s) not sharp. 1. Sharpen the blade(s). 2. Cutting blade(s) is/are bent. 2. Install new cutting blade(s). 3. Mower is not level. 3. Level mower from side-to-side and front-to-rear. 4. Underside of the mower is dirty. 4.
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Countries Other than the United States or Canada Customers who have purchased Toro products exported from the United States or Canada should contact their Toro Distributor (Dealer) to obtain guarantee policies for your country, province, or state. If for any reason you are dissatised with your Distributor’s service or have difculty obtaining guarantee information, contact the Toro importer.