Form No. 3393-843 Rev C TimeCutter® MX 3450 Riding Mower Model No. 74750—Serial No. 315000001 and Up Register at www.Toro.com.
Introduction WARNING CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. This machine is a ride-on, rotary-blade lawnmower intended to be used by homeowners in residential applications.
Servicing the Fuses .................................................34 Drive System Maintenance .........................................35 Checking the Tire Pressure ......................................35 Releasing the Electric Brake .....................................35 Mower Maintenance ...................................................36 Servicing the Cutting Blades.....................................36 Leveling the Mower Deck ........................................39 Removing the Mower.........
Safety • Turn off blades when not mowing. Stop the engine, wait 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.
Service • Always avoid sudden starting or stopping on a slope. If • • • • tires lose traction, stop the machine, disengage the blades and proceed slowly off the slope. Use extreme care with grass catchers or other attachments. These can change the stability of the machine and cause loss of control. Do not try to stabilize the machine by putting your foot on the ground. Do not mow near drop-offs, ditches, steep banks or water.
• Check for proper brake operation frequently. Adjust and service as required. • Maintain or replace safety and instruction decals as necessary. • Use only genuine Toro replacement parts to ensure that original standards are maintained. Toro Riding Mower Safety The following list contains safety information specific to Toro products or other safety information that you must know that may not be included in the ANSI standards.
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. 93-7009 1. Warning—don't operate the mower with the deflector up or removed; keep the deflector in place. 2. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts. 110-6691 1. Thrown object hazard—keep bystanders a safe distance from the machine. 2.
119-8814 1. Parking position 4. Neutral 2. Fast 3. Slow 5. Reverse 121-2989 1. Bypass lever position for pushing the machine 2. Bypass lever position for operating the machine 119-8815 1. Parking position 4. Neutral 2. Fast 3. Slow 5. Reverse Manufacturer's Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. 119-8871 Certain models only 1.
121-0771 1. Choke 2. Fast 4. Slow 5. Power take-off (PTO), Blade control switch 3. Continuous variable setting 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 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.
131–3947 1. Trim—slow 2. Tow—medium 3. Mow—fast 132-0869 1. Warning—read the Operator's Manual. 5. Ramp tipping 3. Cutting hazard of hand, hazard—when loading mower blade; pinching onto a trailer, do not use hazard of hand, belt—keep dual ramps; only use a hands and feet away from single ramp wide enough moving parts; keep all for the machine and that guards and shields in place. has an incline less than 15 degrees; back up the ramp (in reverse) and drive forward off the ramp. 2.
Product Overview 4 5 6 3 7 2 1 8 10 9 g027889 Figure 4 1. Deflector 4. Operator seat 7. Footrest 2. Rear drive wheel 3. Control panel 5. Motion control levers 6. Smart Speed™ lever 8. Front caster wheel 9. Lift-assist lever 10. Height of cut lever Controls Ignition Switch Become familiar with all of the controls in Figure 4 and Figure 5 before you start the engine and operate the machine. The ignition switch has three positions, Off, Run and Start.
Motion Control Levers and Parking Brake Position Height-of-Cut Lever The height of cut lever allows the operator to lower and raise the deck from the seated position. When the lever is moved up, toward the operator the deck is raised from the ground and when moved down, away from the operator it is lowered toward the ground. Adjust the height of cut only while machine is not moving (Figure 4). The motion control levers are speed sensitive controls of independent wheel motors.
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. Note: Determine the left and right sides of the machine from the normal operating position. Adding Fuel • Always place gasoline containers on the ground away from your vehicle before filling.
Filling the Fuel Tank Think Safety First Note: Ensure that the engine is shut off and the motion controls are in the parked position. Operating Safety Note: You can use the fuel window to verify the presence of gasoline before filling the tank (Figure 9). 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. Important: Do not overfill fuel tank.
5. Try starting the engine; the engine should not crank. CAUTION 6. Repeat with the other motion-control lever. This machine produces sound levels in excess of 85 dBA at the operators ear and can cause hearing loss through extended periods of exposure. 7. While sitting on the seat, move the blade-control switch to Off, and lock the motion-control levers in the park position. Wear hearing protection when operating this machine. 1 8. Start the engine. 9.
Starting the Engine Operating the Blades Important: Do not engage the starter for more than 5 seconds at a time. If the engine fails to start, allow a 10-second cool-down period between attempts. Failure to follow these instructions can damage the starter motor. The blade control switch, represented by a power take-off (PTO) symbol, engages and disengages power to the mower blades. This switch controls power to any attachments that draw power from the engine, including the mower deck and cutting blades.
Driving the Machine Using the Smart SpeedTM Control System Driving the machine benefits from an understanding of what zero-turn-radius mower means. The drive wheels turn independently, powered by hydraulic motors on each axle; hence one side can turn in reverse while the other turns forward causing the machine to spin rather than turn. This vastly improves the machine maneuverability but may require some adjustment if the operator is unfamiliar.
Tow Driving Backward This is the medium speed. The suggested uses for this speed are as follows: Note: Always use caution when backing up and turning. 1. Move the levers to the center, unlocked position. • Bagging 2. To go backward, look behind you and down, as you slowly pull the motion-control levers rearward (Figure 18). • Mulching Mow This is the fastest speed. The suggested uses for this speed are as follows: • Normal mowing • Transporting the machine Driving Forward 1.
Adjusting the Height-of-Cut Note: The transport position is the highest height-of-cut position or cutting height (115 mm (4.5 inches)) as shown in Figure 19. Height-of-cut is controlled by the lever located to the right of the operating position (Figure 19). Figure 20 Adjusting the Anti-Scalp Rollers Whenever you change the height-of-cut, adjust the height of the anti-scalp rollers. Note: Adjust the anti-scalp rollers so the rollers do not touch the ground in normal, flat mowing areas. 1.
Adjusting the Motion Control Levers 5. Move the motion control levers inward to the neutral position and turn the ignition key to the run position. Do not start the machine. The machine is now able to be pushed by hand. Adjusting the Height 3 The motion control levers can be adjusted higher or lower for maximum operator comfort (Figure 22). A B 1 g027252 2 g017303 Figure 23 Figure 22 1. Bypass lever location 3. Lever position for pushing the machine 2.
Grass Deflector The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. DANGER 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.
WARNING 1 Loading a machine onto a trailer or truck increases the possibility of tip-over and could cause serious injury or death. • Use extreme caution when operating a machine on a ramp. • Use only a full-width ramp; do not use individual ramps for each side of the machine. • Do not exceed a 15-degree angle between the ramp and the ground or between the ramp and the trailer or truck. 2 • Ensure the length of ramp is at least four times as long as the height of the trailer or truck bed to the ground.
Long Grass Operating Tips 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. Fast Throttle Setting For best mowing and maximum air circulation, operate the engine at the Fast position.
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 first 5 hours • Change the engine oil and filter. Before each use or daily • • • • • • Check the safety-interlock system. Clean and check the air cleaner foam element. Check the engine oil. Check the air intake and cooling areas, and clean as necessary. Check the cutting blades.
Premaintenance Procedures Lubrication Raising the Seat Service Interval: Every 25 hours—Grease all lubrication points. Make sure the motion control levers are locked in the park position. Lift the seat forward. Grease Type: No. 2 general purpose, lithium-based grease Greasing the Bearings 1. Park the machine on a level surface and disengage the blade control switch. The following components can be accessed by raising the seat: • Serial plate 2.
Engine Maintenance 4. Connect a grease gun to each fitting (Figure 27 and Figure 28). Pump grease into the fittings until grease begins to ooze out of the bearings. Servicing the Air Cleaner 5. Wipe up any excess grease. Service Interval: Before each use or daily—Clean and check the air cleaner foam element. Every 50 hours—Replace the air cleaner paper element. Note: Service the air cleaner more frequently if the operating conditions are extremely dusty or sandy. Removing the Foam and Paper Elements 1.
Servicing the Engine Oil Oil Type: Detergent oil (API service SF, SG, SH, SJ, or higher) Crankcase Capacity: 1.0 L (34 oz) when you do not change the filter; 1.05 L (36 oz) when you change the filter. Viscosity: See the table below. SAE 30 SAE 5W -30, 10W -30 Figure 30 1. Foam element SYNTHETIC 5W -20, 5W -30, 10W -30 2. Paper element 6. Separate the foam and paper elements. g029683 Cleaning the Foam and Paper Elements Figure 31 Foam Element: 1. Wash the foam element in liquid soap and warm water. 2.
A Changing the Engine Oil and Filter B Service Interval: After the first 5 hours Every 100 hours (change it more often under a heavy load or in high temperatures). Every 100 hours Note: Change the engine-oil filter more frequently when the operating conditions are extremely dusty or sandy. C D E 1. Park the machine, so that the right side is slightly lower than the left side, to ensure that the oil drains completely. 2. Disengage the blade-control switch (PTO). 3.
A C E B A B C D E F D F 3/4 g027477 Figure 34 G 6. Slowly pour approximately 80% of the specified amount of oil into the fill hole (Figure 35). H 7. Check the oil level; refer to Figure 35. g029369 Figure 33 5. Remove the engine-oil filter. Note: Ensure the oil-filter gasket touches the engine, and then turn the filter an extra 3/4 turn.
A B A B g027478 C D Figure 36 Checking the Spark Plug E Important: Do not clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks. F Note: 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 0.76 mm (0.030 inch).
Cleaning the Blower Housing Fuel System Maintenance To ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times. DANGER Annually or every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and any other cooling shrouds. Clean the cooling fins and external surfaces as necessary. Make sure the cooling shrouds are installed after finishing the maintenance.
Electrical System Maintenance WARNING CALIFORNIA Proposition 65 Warning Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. g027506 A B Charging the Battery Removing the Battery WARNING C 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. Slide the rubber cover up the positive (red) cable. Disconnect the positive (red) cable from the battery post (Figure 40). Retain all fasteners. 6. Remove the battery hold-down (Figure 40) and lift the battery from the battery tray. 3 2 6 5 7 1 Figure 41 4 1. Positive battery post 3. Red (+) charger lead 2. Negative battery post 4. Black (-) charger lead Installing the Battery 1. Position the battery in the tray (Figure 40). 2.
Drive System Maintenance 30 Checking the Tire Pressure 25 Service Interval: Every 25 hours—Check tire pressure. 30 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 (Figure 43). Check the tires when they are cold to get the most accurate pressure reading. 1 25 2 G014921 Refer to the maximum pressure suggested by the tire manufacturer on the sidewall of the caster wheel tires. Figure 42 1.
Mower Maintenance 2. Locate the shaft on the electric brake where the brake-link arms are connected. 3. Rotate the shaft forward to release the brake. Servicing the Cutting Blades 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. Check the cutter blades daily for sharpness, and for any wear or damage.
3. Measure from the tip of the blade to the flat surface here. 1 Figure 45 1. Cutting edge 3. Wear/slot forming 2. Curved area 4. Damage G014973 3 2 Figure 47 Checking for Bent Blades 1. Blade, in position for measuring Note: The machine must be on a level surface for the following procedure. 2. Level surface 3. Measured distance between blade and surface (A) 1. Raise the mower deck to the highest height-of-cut position; also considered the 'transport' position. 4.
Removing the Blades The blades must be replaced if a solid object is hit, if the blade is out of balance, or the blade is bent. To ensure optimum 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 Hold the blade end using a rag or thickly-padded glove. Remove the blade bolt, curved washer, and blade from the spindle shaft (Figure 50).
1 2 G009682 Figure 52 1. Blade 3 3 2. Balancer 2 Installing the Blades 1. Install the blade onto the spindle shaft (Figure 50). 4 Important: The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. 4 Figure 53 2. Install the curved washer (cupped side toward the blade) and the blade bolt (Figure 50). 1. Blades side to side 3. Outside cutting edges 2. Sail area of blade 4. Measure from the tip of the blade to the flat surface here 3.
10. Continue leveling the deck by checking the front-to-rear blade slope; refer to Releasing the Electric Brake (page 35). Adjusting the Front-to-Rear Blade Slope Check the front-to-rear blade level any time you install the mower. If the front of the mower is more than 7.9 mm (5/16 inch) lower than the rear of the mower, adjust the blade level using the following instructions: 3 1. Park the machine on a level surface and disengage the blade control switch. 1 2 2.
Mower Belt Maintenance Inspecting the Belts Service Interval: Every 25 hours—Check the belts for wear/cracks. Check the belts for cracks, frayed edges, burn marks, or any other damage. Replace damaged belts. Replacing the Mower Belt 3 1 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. 2 1.
Replacing the Grass Deflector 2 7 3 1 Service Interval: Before each use or daily—Inspect the grass deflector for damage 5 7 WARNING 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. Never operate the lawn mower unless you install a mulch plate, discharge deflector, or grass collection system. 3 Inspect the grass deflector for damage before each use.
2 1 3 3 2 1 4 4 g017618 Figure 61 1. Rod and spring assembly installed 2. Loop end of the spring installed into the notch in the deflector bracket 6. Secure the rod and spring assembly by twisting it so the short end of the rod can be placed behind the front bracket welded to the deck (Figure 61). g017617 5 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 60 1. Rod 2. Spring 3.
Cleaning Note: If the mower is not clean after one washing, soak it and let it stand for 30 minutes. Then repeat the process. Washing the Underside of the Mower 8. Run the machine and mower blades again for one to three minutes to remove excess water. 9. Turn off the mower blades. Service Interval: After each use—Clean the mower housing. Important: You can wash the machine with mild detergent and water. Do not pressure wash the machine.
Storage 14. Check the condition of the drive and mower belts. 15. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is worn or damaged. Cleaning and Storage 16. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 1. Disengage the blade control switch, move the motion controls outward to the park position, stop the engine, and remove the key. 17. Store the machine in a clean, dry garage or storage area.
Troubleshooting Problem The engine overheats. Possible Cause 1. The engine load is excessive. 1. Reduce ground speed. 2. The oil level in the crankcase is low. 3. The cooling fins and air passages under the engine blower housing are plugged. 4. The air cleaner is dirty. 2. Add oil to the crankcase. 3. Remove the obstruction from the cooling fins and air passages. 5. Dirt, water, or stale fuel is in fuel system.
Problem There is abnormal vibration. There is an uneven cutting height. Possible Cause 1. The engine mounting bolts are loose. 1. Tighten the engine mounting bolts. 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. 2. Tighten the appropriate pulley. 5. Tighten the blade mounting bolt. 6. Contact an Authorized Service Dealer. 1.
Schematics Electrical Diagram (Rev.
Notes: 49
Notes: 50
Notes: 51
The Toro Total Coverage Warranty TimeCutter and TITAN Mowers Limited Warranty (see warranty periods below) Conditions and Products Covered Pages of your telephone directory (look under “Lawn Mowers”) or access our web site at www.Toro.com. You may also call the numbers listed in item #3 to use the 24-hour Toro Dealer locator system.
