Form No. 3400-822 Rev A TimeCutter® MX 3450 Riding Mower Model No. 74750—Serial No. 3160000001 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.
Drive System Maintenance .........................................35 Checking the Tire Pressure ......................................35 Releasing the Electric Brake .....................................35 Cooling System Maintenance ......................................35 Cleaning the Engine Screen......................................35 Cleaning the Engine-Cooling Fins and Shrouds.............................................................35 Mower Maintenance .............................................
Safety • Do not operate the machine while ill, tired, or under the 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. • Watch for traffic when operating near or crossing influence of alcohol or drugs. roadways.
Safe Handling of Gasoline • Do not mow near drop-offs, ditches, steep banks or water. Wheels dropping over edges can cause rollovers, which may result in serious injury, death or drowning. To avoid personal injury or property damage, use extra care when handling gasoline and other fuels. They are flammable and the vapors are explosive. • Use a walk behind mower and/or a hand trimmer near drop-offs, ditches, steep banks or water. • Extinguish all cigarettes, cigars, pipes and other sources of ignition.
General Service • If loading the machine onto a trailer or truck, use a single, full-width ramp only. The ramp angle should not exceed 15 degrees. • Never operate a machine inside a closed area. Engine exhaust contains carbon monoxide, which is an odorless, deadly poison that can kill you. • Removing standard original equipment parts and accessories may alter the warranty, traction, and safety of the machine. Failure to use original Toro parts could cause serious injury or death.
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. 112-9840 1. Read the Operator's Manual. 3.
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. Flush eyes immediately with water and get medical help fast. 5. Read the Operator's Manual. 10.
121-0771 1. Choke 2. Fast 4. Slow 5. Power take-off (PTO), Blade control switch 3. Continuous variable setting 131–3947 1. Trim—slow 2. Tow—medium 3.
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 3 positions: OFF, RUN, and START.
Motion-Control Levers and Park Position 1 The motion-control levers are speed-sensitive controls of independent-wheel motors. Moving a lever forward or backward turns the wheel on the same side forward or in reverse; wheel speed is proportional to the amount the lever is moved. Move the control levers outward from the center to the PARK position when exiting the machine (Figure 14). Always position the motion-control levers into the PARK position when you stop the machine or leave it unattended.
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.
Using Stabilizer/Conditioner Checking the Engine-Oil Level Use a fuel stabilizer/conditioner in the machine to provide the following benefits: • Keeps gasoline fresh during storage of 90 days or less. For longer storage it is recommended that the fuel tank be drained.
Understanding the Safety-Interlock System WARNING If the safety-interlock switches are disconnected or damaged, the machine could operate unexpectedly, causing personal injury. • Do not tamper with the interlock switches. • Check the operation of the interlock switches daily and replace any damaged switches before operating the machine. The safety-interlock system is designed to prevent the engine from starting unless: Figure 9 1. Safe zone—use the machine here. 2.
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 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 Driving Forward 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 a 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 you are unfamiliar. Note: Always use caution when backing up and turning. 1.
Driving Backward To change speeds, do the following: 1. Move the motion-control levers to the NEUTRAL position and outward to the PARK position. Note: Always use caution when backing up and turning. 1. Move the levers to the center, unlocked position. 2. Disengage the blade-control switch. 2. To go backward, look behind you and down, as you slowly pull the motion-control levers rearward (Figure 16). 3. Adjust the lever to the desired position. The following are only recommendations for use.
Stopping the Machine Adjusting the Height of Cut To stop the machine, move the motion-control levers to the NEUTRAL position and outward to the PARK position, disengage the blade-control switch, ensure the throttle is at full throttle, and turn the ignition key to off. Remove the key from the ignition switch. Note: The transport position is the highest height-of-cut position or cutting height 115 mm (4.5 inches) as shown in Figure 18.
Positioning the Seat Adjusting the Motion-Control Levers Position the seat where you have the best control of the machine and are most comfortable (Figure 19). Adjusting the Height You can adjust the motion-control levers higher or lower for maximum comfort (Figure 21). A Figure 19 B g027252 Figure 21 Adjusting the Anti-Scalp Rollers Adjusting the Tilt You can adjust the motion-control levers forward or rearward for your comfort.
Pushing the Machine by Hand Operating the Machine Important: Always push the machine by hand. Do not tow the machine, because damage may occur. Move the bypass levers rearward through the key hole and down to lock them in place as shown in Figure 22. This machine has an electric-brake mechanism, and to push the machine, the ignition key needs to be in the RUN position. The battery needs to be charged and functioning for the electric brake to be disengage. Note: Do this for each lever.
Transporting the Machine Important: Do not use narrow individual ramps for each side of the machine. Use a heavy-duty trailer or truck to transport the machine. Ensure that the trailer or truck has all necessary brakes, lighting, and marking as required by law. Please carefully read all the safety instructions. Knowing this information could help you, your family, pets, or bystanders avoid injury. Ensure the ramp is long enough so that the angle with the ground does not exceed 15 degrees (Figure 25).
Operating Tips 1 Using the Fast Throttle Setting For best mowing and maximum air circulation, operate the engine at the FAST position. Air is required to thoroughly cut grass clippings, so do not set the height-of-cut so low as to totally surround the mower in uncut grass. Always try to have 1 side of the mower free from uncut grass, which allows air to be drawn into the mower.
Keeping 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. Maintaining the Blade(s) Maintain a sharp blade throughout the cutting season because a sharp blade cuts 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.
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 level. Clean the engine air-intake screen. Check the cutting blades.
Premaintenance Procedures Lubrication Raising the Seat Service Interval: Every 25 hours—Grease all lubrication points. Make sure that the motion-control levers are locked in the PARK position, and lift the seat forward. Grease Type: No. 2 lithium 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 Servicing the Air Cleaner 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. Figure 29 Removing the Foam and Paper Elements 1. Foam element 2. Paper element 1. Disengage the blade-control switch (PTO). 2.
Servicing the Engine Oil Oil Type: Detergent oil (API service SF, SG, SH, SJ, or higher) A B C D 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 E SAE 5W -30, 10W -30 SYNTHETIC 5W -20, 5W -30, 10W -30 F g029683 G H Figure 30 Checking the Engine-Oil Level Service Interval: Before each use or daily I Note: Check the oil when the engine is cold.
A C E B A B C D E F D F 3/4 g027477 Figure 33 G 6. Slowly pour approximately 80% of the specified amount of oil into the fill hole (Figure 34). H 7. Check the oil level (Figure 34). g029369 Figure 32 5. Remove the engine-oil filter. Note: Ensure the oil-filter gasket touches the engine, and then an extra 3/4 turn is completed.
A A B B g027478 C D Figure 35 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).
Fuel System Maintenance DANGER In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you, others, and can damage property. g027506 A • Perform any fuel-related maintenance when the engine is cold. Do this outdoors in an open area. Wipe up any gasoline that spills. • Never smoke when draining gasoline, and stay away from an open flame or where a spark may ignite the gasoline fumes.
Electrical System Maintenance 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. WARNING • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable. 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.
Charging the Battery Servicing the Fuses Service Interval: Before storage—Charge the battery and disconnect battery cables. 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. Remove the battery from the chassis; refer to Removing the Battery (page 33). Fuse type: 2. Charge the battery for a minimum of 1 hour at 6 to 10 amps.
Drive System Maintenance Cooling System Maintenance Checking the Tire Pressure Cleaning the Engine Screen Service Interval: Every 25 hours—Check tire pressure. Service Interval: Before each use or daily—Clean the engine air-intake screen. 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 42). Check the tires when they are cold to get the most accurate pressure reading.
Mower Maintenance 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. Figure 44 Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary.
3. Measure from the tip of the blade to the flat surface (Figure 46). 1 1 G014973 3 2 G014973 3 Figure 48 2 1. Opposite blade edge (in position for measuring) Figure 46 2. Level surface 3. Second measured distance between blade and surface (B) 1. Blade (in position for measuring) 2. Level surface 3. Measured distance between blade and the surface (A) A.
Installing the Blades 1. Install the blade onto the spindle shaft (Figure 49). Important: The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. 2. Install the blade stiffener (32-inch decks only), the curved washer (cupped side toward the blade), and the blade bolt (Figure 49). 3. Torque the blade bolt to 47 to 88 N•m (35 to 65 ft-lb). Leveling the Mower Deck G027833 Figure 49 107 cm (42-Inch) Decks 1. Sail area of the blade 2.
1 2 Note: Repeat this procedure until the measurements are correct. 10. Continue leveling the deck by checking the front-to-rear blade slope; refer to Adjusting the Front-to-Rear Blade Slope (page 39). G009682 3 3 4 2 Adjusting the Front-to-Rear Blade Slope 4 Check the front-to-rear blade slope 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 deck. 1.
3 3 1 1 2 2 G014634 Figure 55 1. Adjusting rod 3. Locknut 2. Adjusting block G014635 Figure 56 7. To raise the front of the mower, tighten the adjustment nut. 1. Front support rod 3. Deck bracket 2. Locking nut 8. To lower the front of the mower, loosen the adjustment nut. 5. Using the mower deck handles, lift the mower deck and hanger brackets clear of the rear lift rod and lower the mower carefully to the ground (Figure 57). 9. After adjustment, check the front-to-rear slope again.
Installing the Mower 2 7 3 1 1. Park the machine on a level surface and disengage the blade-control switch. 5 7 2. Move the motion-control levers outward to the PARK position, shut off the engine, remove the key, and 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. Lift the rear of the mower deck and guide the hanger brackets over the rear lift rod (Figure 57). 3 6.
2 1 3 3 2 1 4 4 g017618 Figure 60 1. Rod and spring assembly installed 2. Loop end of the spring installed into the notch in the deflector bracket 7. Secure the rod and spring assembly by twisting it so the short end of the rod is placed behind the front bracket welded to the deck (Figure 60). 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 59 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 9. Run the mower again for 1 to 3 minutes to remove excess water. Service Interval: After each use—Clean the mower-deck housing. WARNING A broken or missing washout fitting could expose you and others to thrown objects or blade contact. Contact with blade or thrown debris can cause injury or death.
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, shut off 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. The starter does not crank.
Problem There is abnormal vibration. The cutting height is uneven. 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.
TimeCutter and TITAN Mowers The Toro Warranty 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 repair the Toro Products listed below if defective in materials or workmanship. 1. Contact any Authorized Toro Service Dealer to arrange service at their dealership. To locate a dealer convenient to you, access our web site at www.Toro.com.
