Form No. 3370-930 Rev A Z Master® Riding Mower with 48in or 52in TURBO FORCE® Side Discharge Mower Model No. 74901—Serial No. 312000001 and Up Model No. 74903—Serial No. 312000001 and Up To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com.
This rotary-blade, riding lawn mower is intended to be used by residential homeowners or professional, hired operators. It is designed primarily for cutting grass on well-maintained lawns on residential or commercial properties. It is not designed for cutting brush or for agricultural uses. Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready.
Contents Servicing the Battery........................................... 41 Servicing the Fuses ............................................. 43 Drive System Maintenance ..................................... 44 Checking the Seat Belt ........................................ 44 Checking the Rollover Protection System (ROPS) Knobs ............................................... 44 Adjusting the Tracking........................................ 44 Checking the Tire Pressure .................................
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 can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety alert symbol, which means CAUTION, WARNING, or DANGER-“personal safety instruction." Failure to comply with the instruction may result in personal injury or death.
• Be aware of the mower discharge direction and do not point it at anyone. • Do not operate the mower under the influence of alcohol or drugs. • Use extreme care when loading or unloading the machine into a trailer or truck. • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision. • Be certain that the seat belt can be released quickly in the event of an emergency. • Be aware there is no rollover protection when the roll bar is down.
• Keep all parts in good working condition and all hardware tightened. Replace all worn or damaged decals. • Use only Toro approved attachments. Warranty may be voided if used with unapproved attachments.
Slope Indicator G011841 Figure 3 This page may be copied for personal use. 1. The maximum slope you can safely operate the machine on is 15 degrees. Use the slope chart to determine the degree of slope of hills before operating. Do not operate this machine on a slope greater than 15 degrees. Fold along the appropriate line to match the recommended slope. 2. Align this edge with a vertical surface, a tree, building, fence pole, etc. 3. Example of how to compare slope with folded edge.
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. 68-8340 1-403005 98-5954 103-2076 54-9220 58-6520 105-7798 1.
110-2067 110-2068 1. Read the Operator's Manual. 107-2102 114-4466 109-7232 9 1. Main, 25A 3. Charge, 25A 2. PTO, 10A 4.
116-0205 115-7445 1. Grease pulleys and spindles 2. Maintenance interval—50 hours 116-0211 116-0090 116-0752 116-0157 1. Latch 10 2.
6-1654 116-3303 116-1716 1. Fuel 2. Empty 3. Half 4. Full 5. Battery 6. Hour meter 7. PTO 8. Parking brake 9. Neutral 10. Operator presence switch 116-5944 116-2643 120-5898 1. Choke 2. Fast 3. Continuous variable setting 116-4858 11 4. Slow 5.
Manufacturer's Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystandersa safe distance from the battery. 2. No fire, open flame, or smoking. 7. Wear eye protection; explosive gases can cause blindness and other injuries 3. Caustic liquid/chemical burn hazard 4. Wear eye protection 8. Battery acid can cause blindness or severe burns. 9.
Product Overview Use these times for scheduling regular maintenance (Figure 6). Fuel Gauge The fuel gauge is located with the hour meter and the bars light up when the ignition switch is on (Figure 6). The indicator light appears when the fuel level is low (approximately one gallon remaining in the fuel tank). Safety Interlock Indicators There are symbols on the hour meter and the indicate with a black triangle that the interlock component is in the correct position (Figure 6).
Blade Control Switch (PTO) Length: The blade control switch (PTO) is used to engage the electric clutch and drive the mower blades. Pull the switch up to engage the blades and release. To disengage the blades, push the blade control switch (PTO) down or move a motion control lever into the neutral lock position. 48 inch Deck 52 inch Deck Roll Bar - Up 79.2 inches (201.2 cm) 79.2 inches (201.2 cm) Roll Bar - Down 80.9 inches (205.5 cm) 80.9 inches (205.
Operation DANGER 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. • Always place gasoline containers on the ground away from your vehicle before filling.
Breaking In a New Machine 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. New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing additional load on the engine. Allow 40 to 50 hours of break-in time for new machines to develop full power and best performance.
DANGER Operating on wet grass or steep slopes can cause sliding and loss of control. Wheels dropping over edges can cause rollovers, which may result in serious injury, death or drowning. There is no rollover protection when the roll bar is down. Always keep the roll bar in the fully raised and locked position and use the seat belt. Read and follow the rollover protection instructions and warnings. To avoid loss of control and possibility of rollover: • Do not operate near drop-offs or near water.
Releasing the Parking Brake CAUTION This machine produces sound levels in excess of 85 dBA at the operators ear and can cause hearing loss through extended periods of exposure. 1 2 Wear hearing protection when operating this machine. The use of protective equipment for eyes, ears, feet and head is recommended. 1 G016995 Figure 12 2 Operating the Mower Blade Control Switch (PTO) G009027 Figure 10 1.
Always use the fast position when turning on the mower deck with the blade control switch (PTO). to start allow a 15 second cool-down period between attempts. Failure to follow these instructions can burn out the starter motor. Note: Additional starting cycles may be required when starting the engine for the first time after the fuel system has been without fuel completely. G008946 Figure 15 ST A RT N P RU Operating the Choke Use the choke to start a cold engine. ST O G008947 Figure 17 1.
Starting and Stopping the Engine Starting the Engine 1. Raise the ROPS up and lock into place, sit on the seat and fasten the seat belt. 2. Move the motion controls to neutral locked position. 3. Set the parking brake; refer to Setting the Parking Brake. 4. Move the blade control switch (PTO) to the Off position (Figure 19). 5. Move the throttle lever midway between the Slow and Fast positions. ST A RT N RU P ST O G008947 Figure 20 1. Off 2. Run 3.
• The blade control switch (PTO) is disengaged. • The motion control levers are in the neutral locked position The safety interlock system also is designed to stop the engine when the traction controls are moved from the locked position with the parking brake engaged or if you rise from the seat when the PTO is engaged. The hour meter has symbols to notify the user when the interlock component is in the correct position.
Using the Motion Control Levers the motion control levers to neutral lock position. Now start the engine. While the engine is running, center either motion control and move (forward or reverse); the engine should stop. Repeat for other motion control. 5. Sitting on the seat, disengage the parking brake, move the blade control switch (PTO) to off and move the motion control levers to neutral lock position. Try starting the engine; the engine should not crank.
Stopping the Machine To stop the machine, move the traction control levers to neutral and move to locked position, disengage the power take off (blade control switch (PTO), and turn the ignition key to off. Set the parking brake when you leave the machine; refer to Setting the Parking Brake in Operation. Remember to remove the key from the ignition switch. CAUTION Children or bystanders may be injured if they move or attempt to operate the tractor while it is unattended.
Adjusting the Height-of-Cut Pin The height-of-cut is adjusted from 1 to 5-1/2 inches (25 to 140 mm) in 1/4 inch (6 mm) increments by relocating the clevis pin into different hole locations. 1. Move the transport lock to the lock position. 2. Push on the deck lift pedal with your foot and raise the mower deck to the transport position (also the 5-1/2 inch (140 mm) cutting height position) (Figure 27). 3. To adjust, rotate the pin 90 degrees and remove the pin from the height-of-cut bracket (Figure 27). 4.
1. Disengage the blade control switch (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. Figure 30 1. Anti-scalp roller 4. Flange Nut 2. Spacer 5. Bolt 3. Bushing Figure 28 1. Anti-scalp roller 4. Flange Nut 2. Spacer 5. Bolt Adjusting the Flow Baffle The mower discharge flow can be adjusted for different types of mowing conditions.
Positioning the Flow Baffle Position C The following figures are only recommendations for use. Adjustments will vary by grass type, moisture content, and height of grass. This is the full open position. The suggested use for this position is as follows. Note: If the engine power draws down and the mower ground speed is the same, open up the baffle. • Use in wet conditions. Position A • Allows increased ground speed in heavy conditions. • Use in tall, dense grass mowing conditions.
Using the Drive Wheel Release Valves WARNING Hands may become entangled in the rotating drive components below the engine deck, which could result in serious injury. Stop the engine, remove the key, and allow all moving parts to stop before accessing the drive wheel release valves. WARNING The engine and hydraulic drive units can become very hot. Touching a hot engine or hydraulic drive units can cause severe burns.
Transporting Machines individual ramps for each side of the unit (Figure 38). 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. If it is not possible to use one full width ramp, use enough individual ramps to simulate a full width continuous ramp. Use a heavy-duty trailer or truck to transport the machine.
Mowing Direction Alternate mowing direction to keep the grass standing straight. This also helps disperse clippings which enhances decomposition and fertilization. Mow at Correct Intervals Normally, mow every four days. But remember, grass grows at different rates at different times. So to maintain the same cutting height, which is a good practice, mow more often in early spring. As the grass growth rate slows in mid summer, mow less frequently.
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.
Maintenance Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the first 8 hours • Change the engine oil. After the first 100 hours • Check the wheel hub slotted nut torque. • Check the torque for wheel lug nuts. • Check the park brake adjustment. Before each use or daily • • • • • • • • Check the safety system. Check the engine oil level. Check the seat belt. Check the rollover protection system (ROPS) knobs. Clean the engine screen and the oil cooler.
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 before you do any maintenance. Lubrication Where to Grease the Mower Greasing and Lubrication Service Interval: Every 50 hours—Grease the mower deck spindles and idler arm. Grease more frequently when operating conditions are extremely dusty or sandy. Yearly—Grease the pump belt idler arm. Grease Type: No.
Figure 43 1. Seal guard 2. Spacer nut with wrench flats 2. Remove the caster wheel from the caster forks. Figure 41 3. Remove the seal guards from the wheel hub. 7. Remove the hex plug. Thread a grease zerk into the hole. 4. Remove one of the spacer nuts from the axle assembly in the caster wheel. Note that thread locking adhesive has been applied to lock the spacer nuts to the axle. Remove the axle (with the other spacer nut still assembled to it) from the wheel assembly. 8.
Engine Maintenance 13. Torque the nut to 75-80 in-lb (8-9 N-m), loosen, then re-torque to 20-25 in-lb (2-3 N-m). Make sure axle does not extend beyond either nut. WARNING 14. Reinstall the seal guards over the wheel hub and insert wheel into caster fork. Reinstall caster bolt and tighten nut fully. Contact with hot surfaces may cause personal injury. Keep hands, feet, face, clothing and other body parts away the muffler and other hot surfaces.
4. Clean the inside of the air cleaner cover with compressed air. 5. Gently slide the primary filter out of the air cleaner body (Figure 44). Oil Type: Detergent oil (API service SG, SH, SJ, or higher) Oil Capacity for 74901 engines: with a filter change, 56 ounces (1.65 L); with no filter change, 51 ounces (1.5 L) Note: Avoid knocking the filter into the side of the body. 6. Remove the safety filter only if you intend to replace it. Oil Capacity for 74903 engines: with a filter change, 59 ounces (1.
Checking the Engine Oil Level Service Interval: Before each use or daily Note: Check the oil when the engine is cold. WARNING G008804 Contact with hot surfaces may cause personal injury. 1 2 3 4 6 7 8 9 Keep hands, feet, face, clothing and other body parts away from the muffler and other hot surfaces. Important: Do not overfill the crankcase with oil because damage to the engine may result. Do not run engine with oil below the low mark because the engine may be damaged. 5 1.
Changing the Engine Oil 5. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 48). Service Interval: After the first 8 hours Every 100 hours (more often in dirty or dusty conditions) 1 2 3 4 5 6 Note: Dispose of the used oil at a recycling center. 1. Start the engine and let it run five minutes. This warms the oil so it drains better. 2.
Servicing the Spark Plug Service Interval: Every 100 hours Make sure the air gap between the center and side electrodes is correct before installing the spark plug. Use a spark plug wrench for removing and installing the spark plug(s) and a gapping tool/feeler gauge to check and adjust the air gap. Install a new spark plug(s) if necessary. G008804 2 1 Type : Champion® RC12YC or equivalent Air Gap: 0.030 inch (0.76 mm) 3 Removing the Spark Plug 4 1.
Checking the Spark Plug Important: Never clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks. If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means the air cleaner is dirty. Set the gap to 0.030 inches (0.76 mm). 1 2 G008794 Figure 52 Installing the Spark Plug Tighten the spark plug(s) to 18-22 ft.-lb (24.4–29.8 N-m). Figure 50 1.
Check Spark Arrester (if equipped) Fuel System Maintenance Service Interval: Every 50 hours Replacing the Fuel Filter WARNING Hot exhaust system components may ignite gasoline vapors even after the engine is stopped. Hot particles exhausted during engine operation may ignite flammable materials. Fire may result in personal injury or property damage. Service Interval: Every 500 hours/Yearly (whichever comes first) (more often in dirty or dusty conditions).
Electrical System Maintenance Note: It is important to reinstall the fuel line hoses and secure with plastic ties the same as they were originally installed at the factory to keep the fuel line away from components that could cause fuel line damage. Servicing the Battery Servicing the Fuel Tank Service Interval: Monthly Do not attempt to drain the fuel tank. Ensure that an Authorized Service Dealer drains the fuel tank and services any components of the fuel system.
WARNING Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. G008804 • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable. 1 2 3 4 - 1. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake.
Servicing the Fuses Important: Always keep the battery fully charged (1.265 specific gravity). This is especially important to prevent battery damage when the temperature is below 32°F (0°C). The electrical system is protected by fuses. It requires no maintenance, however, if a fuse blows check the component/circuit for a malfunction or short. 1. Charge battery for 10 to 15 minutes at 25 to 30 amps or 30 minutes at 10 amps. 1. The fuses are located on right hand console next to the seat (Figure 57). 2.
Drive System Maintenance Checking the Seat Belt Service Interval: Before each use or daily Visually inspect seat belt for wear, cuts, and proper operation of retractor and buckle. Replace before operating if damaged. Checking the Rollover Protection System (ROPS) Knobs Service Interval: Before each use or daily WARNING To avoid injury or death from rollover: keep the roll bar in the fully raised locked position and use the seat belt. Ensure the seat is secured to the machine.
7. If it tracks to the left, loosen the bolts and adjust the right stop plate rearward on the right T-slot until the machine tracks straight (Figure 59). 8. Tighten the stop plate (Figure 59). Figure 60 Checking the Wheel Hub Slotted Nut Service Interval: After the first 100 hours Every 500 hours See Figure 61 to determine which slotted nut has been installed on the unit. Figure 59 Left control lever shown 1. Control lever Figure 61 3. Stop plate 2. Bolt Checking the Tire Pressure 1.
Figure 62 1. 0.1 inch max 2. No more than two threads (0.1 inch max) should be showing here. 4. If more than two threads (0.1 inch) are showing remove nut and install washer between hub and nut. Figure 63 1. Spring Washers 5. Torque the slotted nut to 200 ft-lb (271 N-m). 3. Dust Cap 2. Lock Nut 6. Then tighten nut until the next set of slots line up with the cross hole in shaft. Do not loosen nut to align the slot. If required, tighten to the next set of slots.
2. Using an air compressor, blow out any debris from under the brake pole and around the brake spacers. Figure 67 1. Shim C. Using a pneumatic line, blow out any debris from under the brake pole and around the brake spacers. Figure 65 3. Check the condition of the wire harness leads, connectors, and terminals. Clean or repair as necessary. D. Re-torque each bolt (M6 x 1) to 10 ft-lb (13 N-m) +/-0.5 ft-lb (0.7 N-m). E. Using a 0.
Cooling System Maintenance • If the gap is less than 0.010 inch, then reinstall the shim and reference the Troubleshooting section. • If the gap is sufficient, proceed to the safety check in step F. Cleaning the Engine Screen and Engine Oil Cooler F. Perform the following safety check: a. Sit on the seat and start the engine. Service Interval: Before each use or daily b. Make sure the blades Do Not engage with the PTO switch “off ” and the clutch disengaged.
Figure 71 1. Engine guard 4. Fan housing 2. Engine air intake screen 5. Screw Figure 72 1. Hydraulic unit shrouds 3. Bolt Check and Clean the Hydraulic Unit Shrouds Service Interval: Before each use or daily 1. Disengage the PTO 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. Slide the seat forward. 4. Clean the debris and grass from the hydraulic unit shrouds (Figure 72). 5. Lower the seat.
Brake Maintenance Adjusting the Parking Brake Service Interval: After the first 100 hours Every 500 hours thereafter Check to make sure brake is adjusted properly. This procedure must be followed after the first 100 hours or when a brake component has been removed or replaced. 1. Drive the machine onto a level surface. 2. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake. Figure 73 Left Hand Brake Shown 3.
Belt Maintenance Inspecting the Belts Service Interval: Every 50 hours Check the belts for 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. Replace the mower belt if any of these conditions are evident. 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.
Figure 76 1. Position the belt cover 3. Ensure the tab is under the metal catch Figure 77 2. Slide belt cover under the side catches 1. Idler pulley 5. Left hand hydraulic pump pulley 2. Clutch pulley 6. Square hole in idler arm 3. Pump drive belt 7. Idler spring 4. Right hand hydraulic pump pulley Replacing the Hydraulic Pump Drive Belt 5. Use a ratchet in the square hole in the idler arm to remove the idler spring (Figure 77). 1. Disengage the PTO and set the parking brake. 2.
Controls System Maintenance Adjusting the Control Handle Position There are two height positions for the control levers; high and low. Remove the bolts to adjust the height for the operator. 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. Figure 79 3. Loosen the bolts and flange nuts installed in the levers (Figure 78).
Adjusting the Motion Control Damper not have to be in the seat because of the jumper wire being used. Run engine at full throttle and release brake. The top damper mounting bolt can be adjusted to obtain a more desired motion control lever resistance. See Figure 81 for mounting options. 6. Run the unit at least 5 minutes with the drive levers at full forward speed to bring hydraulic oil up to operating temperature.
Hydraulic System Maintenance Servicing the Hydraulic System Hydraulic Oil Type: Toro® HYPR-OIL™ 500 hydraulic oil or Mobil® 1 15W-50. Figure 82 1. Flanged nut 2. Jam nut Important: Use oil specified. Other fluids could cause system damage. Each Hydraulic System Oil Capacity: 52 ounces (1.5 l) per side with filter change Checking the Hydraulic Oil Service Interval: Every 50 hours—Check the hydraulic oil level. 1. Position the machine on a level surface. 2.
Replacing the Hydraulic Filters and Hydraulic Oil Service Interval: Every 250 hours—Change the hydraulic filters and hydraulic oil when using Mobil® 1 oil. Every 500 hours—Change the hydraulic filters and hydraulic oil when using Toro® HYPR-OIL™ 500 hydraulic oil. 3 H To replace the hydraulic oil, the filters need to be removed. Replace both at the same time. Refer to the oil specifications under Servicing the Hydraulic System for the correct oil. 1.
Mower Deck Maintenance 1 Leveling the Mower Deck Setting Up the Machine Note: Ensure the mower deck is leveled before matching the height-of-cut (HOC). 1. Position mower on a flat surface. 2. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake. 2 3. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. G008968 Figure 85 Bottom View of Machine 1. Filter locations 4.
10. If needed, loosen the whizlock nut on the side of the yoke and the jam nut on top. Fine tune the screw adjuster by turning it to get 3 inch (7.6 mm) height (see Figure 88). 3 1 To increase the height, turn the adjuster screw clockwise; to decrease, turn counterclockwise. 2 G017027 Figure 86 3. Transport lock 1. Deck lift pedal Figure 88 2. Height of cut pin 1. Whizlock nut 2. Adjuster screw 6. Insert the height adjustment pin into the 3 inch (7.6 cm) cutting height location. 3. Jam nut 4.
Servicing the Cutting Blades 13. If the deck is too low, tighten the single point adjustment bolt by rotating it clockwise. If the deck is too high, loosen the single point adjustment bolt by rotating it counterclockwise (Figure 90). 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.
Checking for Bent Blades performance and continued safety conformance of the machine, use genuine Toro replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards. 1. Disengage the blade control switch (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.
Installing the Blades 1. Install the blade onto the spindle shaft (Figure 96). Important: The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. Figure 94 2. Install the spring disk and blade bolt. The spring disk cone must be installed toward the bolt head (Figure 96). Torque the blade bolt to 85-110 ft-lb (115-150 N-m). 1. Sharpen at original angle 2. Check the balance of the blade by putting it on a blade balancer (Figure 95).
Removing the Mower Deck Before servicing or removing the mower deck, the spring loaded deck arms must be locked out. WARNING Deck lift arm assemblies have stored energy. Removing the deck with out releasing the stored energy can cause serious injury or death. Do Not attempt to disassemble the deck from the front frame without locking out the stored energy. 1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. 2.
6 2 4 7 3 1 5 g015594 Figure 99 Figure 98 1. Right stabilizer 1. Bolt 5. Spring installed 2. Deck strut (right side shown) 2. Spacer 6. Grass Deflector 3. Remove the rear deck lift attachment shoulder bolt and nut. 4. Remove the front deck lift attachment shoulder bolt and nut. 3. Locknut 7. J hook end of spring 4. Spring 8. Raise the deck struts and secure them in the up position. Slide the deck out to the right side of the machine. 2. Place spacer and spring onto grass deflector.
Cleaning Storage Cleaning Under the Mower Cleaning and Storage 1. Disengage the power take off (blade control switch (PTO), set the parking brake, and turn the ignition key to Off. Remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine and hydraulic system. Clean dirt and chaff from the outside of the engine cylinder head fins and blower housing. Service Interval: Before each use or daily 1.
B. Run the engine to distribute conditioned fuel through the fuel system (5 minutes). C. Stop the engine, allow it to cool, and drain the fuel tank; refer to Servicing the Fuel Tank in the Maintenance Section. D. Restart the engine and run it until it stops. E. Dispose of fuel properly. Recycle as per local codes. Important: Do not store stabilizer/conditioned fuel over 90 days. 13. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. 14.
Troubleshooting Problem Starter does not crank Engine will not start, starts hard, or fails to keep running Possible Cause 1. Blade control switch (PTO) is engaged. 1. Move blade control switch (PTO) to disengaged. 2. Parking brake is not on. 3. Drive levers are not in neutral lock position. 4. Operator is not seated. 5. Battery is dead. 6. Electrical connections are corroded or loose. 7. Fuse is blown. 8. Relay or switch is defective. 2. Set the parking brake. 3.
Problem Machine does not drive. Abnormal vibration. Uneven cutting height. Possible Cause 1. By pass valves is not closed tight. 1. Tighten the by pass valves. 2. 3. 4. 5. 2. 3. 4. 5. Pump belt is worn, loose or broken. Pump belt is off a pulley. Broken or missing idler spring. Hydraulic oil level is low or too hot. 1. Install new cutting blade(s). 2. Blade mounting bolt is loose. 3. Engine mounting bolts are loose. 4. Loose engine pulley, idler pulley, or blade pulley. 5. Engine pulley is damaged.
Schematics Wire Diagram (Rev.
Notes: 69
Notes: 70
Notes: 71
The Toro Total Coverage Warranty A Limited Warranty (see warranty periods below) Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly promise to the original purchaser to repair the Toro Products listed below if defective in materials or workmanship. The following time periods apply from the date of purchase by the original owner: Products 21 in.
