Form No. 3329–866 Z150 and Z153 Z Master with 52in SFS Side Discharge Mower Model No. 74165—Serial No. 240000001 and Up Model No. 74166—Serial No. 240000001 and Up Operator’s Manual Register your product at www.Toro.
Warning Driving Forward or Backward . . . . . . . . . . . . . . . Stopping the Machine . . . . . . . . . . . . . . . . . . . . . . Adjusting the Height-of-Cut . . . . . . . . . . . . . . . . . Adjusting the Anti-Scalp Rollers . . . . . . . . . . . . . Positioning the Seat . . . . . . . . . . . . . . . . . . . . . . . Pushing the Machine by Hand . . . . . . . . . . . . . . . Operating with Side Discharge . . . . . . . . . . . . . . . Transporting the Machine . . . . . . . . . . . . . . . . . . .
Introduction Safety Read this manual carefully to learn how to operate and maintain your product properly. The information in this manual can help you and others avoid injury and product damage. Although Toro designs and produces safe products, you are responsible for operating the product properly and safely. Improper use or maintenance by the operator or owner can result in injury.
• Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision. • Use extra care when handling gasoline and other fuels. They are flammable and vapors are explosive. • Use only an approved container Slope Operation • Never remove gas cap or add fuel with engine running. Allow engine to cool before refueling. Do not smoke. • Do not mow slopes greater than 15 degrees. • Do not mow near drop–offs, ditches, steep banks or water.
• Lower the rollbar only when absolutely necessary. Do not wear the seat belt with the roll bar folded down. • Check carefully for overhead clearances (i.e. branches, doorways, electrical wires) before driving under any objects and do not contact them. Maintenance and storage • Disengage drives, lower implement, set parking brake, stop engine and remove key or disconnect spark plug wire. Wait for all movement to stop before adjusting, cleaning or repairing.
Slope Chart 6
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.
65–2690 66-1340 98-5954 67-5360 93-7818 1. Warning—read the Operator’s Manual for instructions on torquing the blade bolt/nut to 115–149 N⋅m (85–110 ft–lb).
98-4387 1. Warning—wear hearing protection. 104-4163 1. Explosion hazard 2. No fire, open flames, or smoking. 3. Caustic liquid/chemical burn hazard 4. Wear eye protection 5. Read the Operator’s Manual. 6. Keep bystanders a safe distance from the battery. 93-1122 103–2644 99-3943 1.
106-6586 103-1997 104-4164 1. Contains lead; do not discard. 2. Recycle 3. Wear eye protection; explosive gases can cause blindness and other injuries 4. No sparks, flame, or smoking 5. Sulfuric acid can cause blindness or severe burns. 6. Flush eyes immediately with water and get medical help fast. 7. Maximum fill line 11 8. Minimum fill line 9.
107-2102 12
Gasoline and Oil Recommended Gasoline Warning Use UNLEADED Regular Gasoline suitable for automotive use (85 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 2 Note: Determine the left and right sides of the machine from the normal operating position. 1 Using the Rollover Protection System (ROPS) m–6836 Figure 2 Warning 1. Full down position To avoid injury or death from rollover: keep the roll bar in the raised locked position and use the seat belt. 2. Down position with bagger installed Important Always use the seat belt with the roll bar in the raised position. Ensure that the rear part of the seat is secured with the seat latch.
7. Tighten the front handles against the center roll bar ends (Fig. 3). Caution This machine produces sound levels in excess of 85 dBA at the operator’s ear and can cause hearing loss through extended periods of exposure. Wear hearing protection when operating this machine. 1 m–6897 Figure 4 1. Front handle Figure 5 Think Safety First 1. Warning—wear hearing protection. Please read all safety instructions and symbols in the safety section.
Using the Hour Meter Setting the Parking Brake The hour meter records the number of hours the engine has operated. It operates when the engine is running. Use these times for scheduling regular maintenance. 1. Move the motion control levers (Fig. 6) out to the neutral lock position. 2. Pull back and up on the parking brake lever to set the parking brake (Fig. 9). The parking brake lever should stay firmly in the Engaged position.
6. Close fuel shut off valve, on front panel before transporting or storing machine. Important Do not engage the starter for more than 10 seconds at a time. If the engine fails to start allow a 30 second cool-down period between attempts. Failure to follow these instructions can burn out the starter motor. Important Make sure that the fuel shut off valve is closed before transporting or storing the machine, as fuel leakage may occur. Set the parking brake before transporting.
The Safety Interlock System 3. Sitting on the seat, engage the parking brake, move the PTO to Off, and lock the motion control levers in neutral. Now start the engine. While the engine is running, release the parking brake, engage the PTO and rise slightly from the seat; the engine should stop. Caution If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury. 4.
Adjusting the Height-of-Cut The farther you move the traction control levers in either direction, the faster the machine will move in that direction. The height-of-cut is adjusted from 1-1/2 to 4-1/2 in. (38 to 114 mm) in 1/4 in. (6 mm) increments by relocating the clevis pin in different hole locations. To stop, pull the motion control levers to neutral. 1. Raise the height-of-cut lever to the transport position (also the 4-1/2 in. [114 mm] cutting height position) (Fig. 16). 2 3 1 2.
4. Reinstall the stud nut and washer (Fig. 17). 5. Repeat the adjustment on the other gage wheels. 3 1 2 1 4 m–4124 Figure 18 3 2 1. Center rollers and spacer 2. Nut 5 3. Bolt m–4167 Figure 17 1. Gage wheel 2. Stud 3. Washer Positioning the Seat 4. Nut 5. Wheel nut and washer. Do not remove. The seat can move forward and backward. Position the seat where you have the best control of the machine and are most comfortable. 1. To adjust, move the lever sideways to unlock the seat (Fig. 19).
3. Rotate the by-pass valves counterclockwise 1 turn to push. This allows hydraulic fluid to by-pass the pump, enabling the wheels to turn (Fig. 20). Danger Changing to Machine Operation 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. Turn the by-pass valves in to operate the machine (Fig. 20).
Loading Machines 1 Use extreme caution when loading units on trailers or trucks. One full width ramp that is wide enough to extend beyond the rear tires is recommended instead of individual ramps for each side of the unit (Fig. 21). The lower rear section of the tractor frame extends back between the rear wheels and serves as a stop for tipping backward. Having a full width ramp provides a surface for the frame members to contact if the unit starts to tip backward.
Tips for Mowing Grass Long Grass Fast Throttle Setting If the grass is ever allowed to grow slightly longer than normal, or if it contains a high degree of moisture, raise the cutting height higher than usual and cut the grass at this setting. Then cut the grass again using the lower, normal setting. For best mowing and maximum air circulation, operate the engine at fast.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position.
Caution If you leave the key in the ignition switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the ignition and disconnect the wire from the spark plug(s) before you do any maintenance. Set the wire aside so that it does not accidentally contact the spark plug.
4. Rotate the opposite ends of the blades forward. Measure from a level surface to the cutting edge of the blades at the same position as in step 3 above. The difference between the dimensions obtained in steps 3 and 4 must not exceed 1/8 in. (3 mm). If this dimension exceeds 1/8 in. (3 mm), the blade is bent and must be replaced; refer to Removing the Blades and Installing the Blades, page 27. Warning Contact with sharp blade can cause serious injury.
3 4 2 1 1 m–1855 Figure 27 1. Blade 2. Balancer 5 Installing the Blades 2 1. Install the blade onto the spindle shaft (Fig. 25). 1 Important The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. m–4815 Figure 28 1. Latches 2. Air cleaner cover 3. Air filter body 2. Install the flat washer, lock washer, and blade bolt (Fig. 25). Torque the blade bolt to 85–110 ft–lb (115–150 N⋅m). 4. Main filter 5.
Servicing the Engine Oil 1 3 Change the oil: • After every 100 operating hours. Note: Change the oil more frequently when operating conditions are extremely dusty or sandy. 2 Oil Type: Detergent oil (API service SG or SH) Crankcase Capacity: w/filter, 67 oz. (2 l) m–3219 Viscosity: See the table below. m–5626 Figure 29 USE THESE SAE VISCOSITY OILS 1. Oil dipstick 2. Filler tube 3. Metal end 10W–30, 10W–40 Changing the Engine Oil 5W–20, 5W–30 –20 °F –30 °C 0 –20 20 –10 1.
Changing the Oil Filter 2. Pull the wire(s) off of the spark plug(s) (Fig. 32). Clean around the spark plug(s) to prevent dirt from falling into the engine and potentially causing damage. Replace the oil filter every 200 hours or every other oil change. 3. Remove the spark plug(s) and metal washer. Note: Change the oil filter more frequently when operating conditions are extremely dusty or sandy. 1. Drain the oil from the engine; refer to Changing the Oil, page 28. 2.
Draining the Fuel Tank 2. Tighten the spark plug(s) to 20 ft–lb (27 N⋅m). 3. Push the wire(s) onto the spark plug(s) (Fig. 32). Danger Replacing the Fuel Filter 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. Replace the fuel filter after every 200 operating hours or yearly, whichever occurs first. Never install a dirty filter if it is removed from the fuel line.
2. Clean the engine cooling fins. 3. Install the panels onto the engine shroud. 1 3 3 1 2 4 m–4088 2 m–5616 m–3801 Figure 35 1. Fuel shut-off valve 2. Fuel filter Figure 37 3. Hose clamp 4. Fuel line 1. Panel 2. Engine shroud 3. Screws Cleaning the Cooling Systems Greasing and Lubrication Cleaning the Engine Screen Lubricate the machine when shown on the Check Service Reference Aid decal (Fig. 38). Grease more frequently when operating conditions are extremely dusty or sandy.
Greasing the Bearings The cutting unit must be lubricated regularly; refer to the Recommended Maintenance Schedule, page 24. Grease with No. 2 general purpose lithium base or molybdenum base grease. 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. 3. Grease the fittings on the three spindle bearings (Fig. 39). 4.
Checking the Tire Pressure 5. Run the machine at low idle for 15 minutes to allow any air to purge out of the system and warm the fluid. Refer to Starting and Stopping the Engine on page 16. 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 after every 50 operating hours or monthly, whichever occurs first (Fig. 40). Check the tires when they are cold to get the most accurate pressure reading. 6.
Replacing the Hydraulic Filter Change the hydraulic filter: 1 3 • After the first 8 operating hours. • After every 200 operating hours. 2 Use summer filter above 32°F (0°C) Use winter filter below 32°F (0°C) 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake. m–1256 Figure 43 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 1. Hydraulic filter 2.
Checking the Hydraulic Lines Note: Keeping rearward pressure on the lever will keep the pin at the end of the slot and allow the adjustment bolt to move the lever to the appropriate position. After every 100 operating hours, check hydraulic lines and hoses for leaks, loose fittings, kinked lines, loose mounting supports, wear, weather and chemical deterioration. Make necessary repairs before operating. 8. Tighten the nut and jam nut (Fig. 45). 9. Repeat on the opposite side of unit.
Setting the Hydraulic Pump Neutral Position 3. Move motion control lever forward and reverse, then back to neutral. Wheel must stop turning or slightly creep in reverse. Note: Adjust handle neutral first. That has to be correct before the following adjustment can be made. 4. Open throttle to fast. Make sure wheel remains stopped or slightly creeps in reverse, adjust if necessary. Danger Mechanical or hydraulic jacks may fail to support machine and cause a serious injury.
6. Tighten the nuts at the ball joints (Fig. 45). 2 Warning 3 Electrical system will not perform proper safety shut off with jumper wire installed. 4 • Remove jumper wire from wire harness connector and plug connector into seat switch when adjustment is completed. • Never operate this unit with jumper installed and seat switch bypassed. 1 m–6280 7. After both pump neutrals are set, shut off the machine. Figure 47 8. Remove jumper wire from wire harness connector and plug connector into seat switch.
Checking the Wheel Hub Slotted Nut Leveling the Mower at Three Positions Check after every 500 operating hours. Important There are only three measuring positions needed to level the mower. The slotted nut needs to be torqued to 125 ft–lb (170 N⋅m). 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake. Setting Up the Machine 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 1.
Front 9. Tighten the jam nut under the rear support arm and tighten the bolt securing the chain to the rear support arm. 10. Adjust the opposite side if needed. Adjusting the Front–to–Rear Mower Pitch 1. Position the right blade front-to-rear (Fig. 53). B C m–1078 2. Measure the right blade at the A location (Fig. 53), from a level surface to the cutting edge of the blade tip (Fig. 54). Figure 50 3. Record this measurement. 4. Measure the right blade at the B location (Fig.
9. Tighten both swivel jam nuts against the front swivel to lock the height. 1 3 4 10. Check to make sure there is equal tension on the chains and adjust again if needed. Adjusting the Compression Spring 2 1. Raise the mower lift lever to the transport position (Fig. 55). m–6273 Figure 56 2. Check the distance between the two large washers, it needs to be 10–1/4 inches (260 mm) (Fig. 55). 1. Push arm 2. 15-5/16 inch (389 mm) nominal 3.
2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 1 5 3. Remove the belt covers over the outside spindles. 3 4. Loosen the outer nut on the spring eye bolt (Fig. 57). 1 4 5 3 4 2 7 2 m–4159 Figure 58 1. Deck belt 2. Idler arm 3. Outside pulley 6 4. Spring 5. Idler pulley m–4197 Figure 57 Replacing the Pump Drive Belt Top View 1. 2. 3. 4. Outer nut Idler pulley Idler arm Spring eye bolt 5. Spring 6.
4 5 1 3 4 5 7 6 1 6 2 m–4119 3 Figure 59 1. Clutch strap 2. Bolt 3. Clutch electrical wire 4. Belt 5. Idler 6. Clutch 2 m–4120 Figure 60 1. 2. 3. 4. Brake lever Spring, 2-3/4 in. (70 mm) Adjusting nuts Collar on brake rod 5. 3/16–1/4 in. (5–7 mm) 6. Jam nut and yoke 7. Trunnion Adjusting the Parking Brake Check the parking brake for proper adjustment. Servicing the Fuses 1. Disengage the brake lever (lever down). The electrical system is protected by fuses.
Servicing the Battery Danger Warning Battery electrolyte contains sulfuric acid which is a deadly poison and causes severe burns. CALIFORNIA • Do not drink electrolyte and avoid contact with skin, eyes or clothing. Wear safety glasses to shield your eyes and robber gloves to protect your hands. • Fill the battery where clean water is always available for flushing the skin. • Follow all instructions and comply with all safety messages on the electrolyte container.
9 5 4 11 Warning 2 Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. 7 6 7 • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable. • Always Reconnect the positive (red) battery cable before reconnecting the negative (black) cable. 3 8 10 1.
Replacing the Grass Deflector 5. Wait five to ten minutes after filling the battery cells. Add distilled water, if necessary, until the electrolyte level is up to the upper line (Fig. 62) on the battery case. Warning 6. Reinstall battery vent caps. An uncovered discharge opening could allow the lawn mower to throw objects in the operator’s or bystander’s direction and result in serious injury. Also, contact with the blade could occur.
Waste Disposal Mercury Tilt Switch Disposal Engine oil, hydraulic oil, and engine coolant are pollutants to the environment. Dispose of these according to your state and local regulations. Several states have passed laws concerning the disposal of devices containing mercury. In all the remaining states it is advisable to follow similar procedures.
BK BK GND PTO CLUTCH GY (NEUTRAL) SW5 DK.GN SHOWN WITH LEVER IN NEUTRAL POSITION LT.GN SHOWN WITH LEVER IN NEUTRAL POSITION LT.BU DK.GN LT.
Cleaning and Storage A. Add a petroleum based stabilizer/conditioner to fuel in the tank. Follow mixing instructions from stabilizer manufacture. Do not use an alcohol based stabilizer (ethanol or methanol). 1. Disengage the power take off (PTO), set the parking brake and turn the ignition key to off. Remove spark plug wire. Remove the key. Note: A fuel stabilizer/conditioner is most effective when mixed with fresh gasoline and used at all times. 2.
Troubleshooting Problem Starter does not crank. Engine g will not start, starts hard, or f il to fails t keep k running. i Engine g loses power. Engine g overheats. Possible Causes Corrective Action 1. Blade control (PTO) is engaged. 1. Move blade control (PTO) to Disengaged. 2. Parking brake is not on. 2. Set parking brake. 3. Operator is not seated. 3. Sit on the seat. 4. Battery is dead. 4. Charge the battery. 5. Electrical connections are corroded or loose. 5.
Problem Machine does not drive. Abnormal vibration. Uneven cutting g height. g Blades do not rotate. Possible Causes Corrective Action 1. Traction belt is worn, loose or broken. 1. Contact Authorized Service Dealer. 2. Traction belt is off pulley. 2. Contact Authorized Service Dealer. 3. Hydro fluid level low. 3. Add hydro fluid to reservoir. 1. Engine mounting bolts are loose. 1. Tighten engine mounting bolts. 2. Loose engine pulley, idler pulley, or blade pulley. 2.
The Toro Total Coverage Guarantee LCE A Limited Warranty 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 the listed Toro Products if defective in materials or workmanship. The following time periods apply from the date of purchase: You must maintain your Toro Product by following the maintenance procedures described in the operator’s manual.
