Form No. 3398-974 Rev A TimeCutter® MX 5050 Riding Mower Model No. 74770—Serial No. 316000001 and Up Register at www.Toro.com.
accessory information, help finding a dealer, or to register your product. WARNING CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. 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 Installing the Mower.......................................... 44 Replacing the Grass Deflector .......................... 44 Mower Belt Maintenance...................................... 45 Inspecting the Belts .......................................... 45 Replacing the Mower Belt ................................. 45 Cleaning .............................................................. 46 Washing the Underside of the Mower................ 46 Storage ..............................................
Safety • Be alert, slow down and use caution when making turns. Look behind and to the side before changing directions. 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. • Never leave a running machine unattended.
• Follow the attachment manufacturer's • Avoid sudden starts when mowing uphill because recommendation for weight limits for towed equipment and towing on slopes. Towed weight must not exceed the weight of the machine, operator, and ballast. Use counterweights or wheel weights as described in the attachment, or in the towing machine Operator’s Manual. the mower may tip backward. • Be aware that loss of traction may occur going downhill.
Service • Never make any adjustments or repairs with the Safe Handling of Gasoline • Grass catcher components are subject to wear, engine running. damage, and deterioration, which could expose moving parts or allow objects to be thrown. Frequently check components and replace them with the manufacturers' recommended parts, when necessary. To avoid personal injury or property damage, use extra care when handling gasoline and other fuels. They are flammable and the vapors are explosive.
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.
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. decal93-7009 93-7009 1. Warning—do not 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. decal112-9840 112-9840 1. Read the Operator's Manual. 3.
decal132-0872 132-0872 1. Thrown object hazard—keep bystanders away from the machine. 3. Severing hazard of hand or foot—keep away from moving parts. 2. Thrown object hazard, raised baffle—do not operate the machine with an open deck; use a bagger or a baffle. 4. Entanglement hazard—keep away from moving parts; keep all guards and shields in place. decal119-8870 119-8870 1. Height of cut decaloemmarkt Manufacturer's Mark 1.
decal131-3947 131-3947 1. Trim—slow 2. Tow—medium 3. Mow—fast decal131-4162a 131-4162 1. Fast 2. Continuous-variable setting 3. Slow 4.
decal132-0869 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 g027971 Figure 4 1. Deflector 5. Motion-control levers 2. Rear drive wheel 6. Seat 10. Engine guard 9. Engine 14. Smart Speed™ lever 13. Anti-scalp roller 3. Height-of-cut lever 7. Foot-assist lever (certain models only) 11. Mower deck 15. Hydraulic reservoir 4. Control panel 8. Fuel-tank cap 12. Front caster wheel Controls Become familiar with all the controls in Figure 4 and Figure 5 before you start the engine and operate the machine. g027890 Figure 5 Control Panel 1.
Motion-Control Levers and Park Position RUN upon release. Turning the key to the OFF position stops the engine; however, always remove the key when leaving the machine to prevent someone from accidentally starting the engine (Figure 5). 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; the wheel speed is proportional to the amount you move the lever.
Hour Meter Operation The hour meter records the number of hours when you are in the seat and the ignition switch is in the ON position (Figure 7). Note: Determine the left and right sides of the machine from the normal operating position. Adding Fuel • For best results, use only clean, fresh (less than • • • g027974 Figure 7 1. Hour meter location behind the seat • 30 days old), unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method).
Add the correct amount of gasoline stabilizer/conditioner to the gasoline. DANGER In certain conditions during fueling, static electricity can be released, causing a spark that 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.
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. 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. Think Safety First Wear hearing protection when operating this machine. Please read all safety instructions and symbols in the safety section. Knowing this information could help you or bystanders avoid injury.
Testing the Safety-Interlock Starting the Engine Important: Do not engage the starter for more System than 10 seconds at a time. If the engine fails to start, wait 60 seconds between attempts. Failure to follow these instructions can damage the starter motor. Test the safety-interlock system before you use the machine each time. If the safety system does not operate as described below, have an Authorized Service Dealer repair the safety system immediately. 1.
Driving the Machine Note: Always engage the blades with the throttle in the FAST position. The drive wheels turn independently, powered by hydraulic motors on each axle. You can turn 1 side in reverse while you turn the other forward, causing the machine to spin rather than turn. This greatly improves the machine maneuverability but may require sometime for you to adapt to how it moves. WARNING The machine can spin very rapidly.
Driving Forward Driving Backward Note: Always use caution when backing up and Note: Always use caution when backing up and turning. turning. 1. Move the levers to the center, unlocked position. 1. Move the levers to the center, unlocked position. 2. To go forward, slowly push the motion-control levers forward (Figure 14). 2. To go backward, look behind you and down, as you slowly pull the motion-control levers rearward (Figure 16).
To change speeds, do the following: 1. Move the motion-control levers to neutral and outward to the PARK position. 2. Disengage the blade-control switch. 3. Adjust the lever to the desired position. The following are only recommendations for use. Adjustments vary by grass type, moisture content, and the height of the grass. g027625 Figure 17 1.
Stopping the Machine Adjusting the Anti-Scalp Rollers To stop the machine, move the motion-control levers to NEUTRAL and outward to the PARK position, disengage the blade-control switch, ensure that the throttle is in the FAST position, and turn the ignition key to OFF. Remove the key from the ignition switch. Whenever you change the height of cut, adjust the height of the anti-scalp rollers. Note: Adjust the anti-scalp rollers so that the rollers do not touch the ground in normal, flat mowing areas.
Pushing the Machine by Hand Important: Always push the machine by hand. Do not tow the machine, because damage may occur. This machine has an electric-brake mechanism, and to push the machine, turn the ignition key to the RUN position. The battery needs to be charged and functioning to disengage the electric brake. Pushing the Machine 1. Park the machine on a level surface and disengage the blade-control switch. 2.
Using the Grass Deflector Note: If the machine fails to move, the electric brake may still be engaged. If necessary, release the electric brake manually; refer to Releasing the Electric Brake (page 36). The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. Operating the Machine DANGER Move the bypass levers rearward through the key hole and down to lock them in place as shown in Figure 22.
WARNING Loading a machine onto a trailer or truck increases the possibility of a 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. g027708 Figure 23 Loading the Machine • Do not exceed a 15-degree angle between the ramp and the ground or between the ramp and the trailer or truck.
Operating Tips 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 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.
Avoid Cutting Too Low If the cutting width of the mower is wider than the mower you previously used, raise the cutting height to ensure that uneven turf is not cut too short. Long Grass 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.
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 50 hours • Change the fluid and filters for the hydraulic system and bleed the system. Before each use or daily • • • • • Check the safety-interlock system. Check the air cleaner for dirty, loose or damaged parts. Check the engine-oil level. Check the cutting blades.
Pre-Maintenance 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. Lift the seat forward. Grease Type: No. 2 lithium grease Greasing the Bearings You can access the following components by raising the seat: • Serial plate 1. Park the machine on a level surface and disengage the blade-control switch. 2.
Engine Maintenance Servicing the Air Cleaner Service Interval: Before each use or daily—Check the air cleaner for dirty, loose or damaged parts. Every 50 hours—Service the air-cleaner paper element (more often under extremely dusty, dirty conditions). Every 100 hours—Replace the air-cleaner paper element (more often under extremely dusty, dirty conditions). g028384 Figure 28 This engine is equipped with a replaceable, high-density paper air-cleaner element.
Changing the Engine Oil and the Engine-Oil Filter Service Interval: Every 100 hours—Change the engine oil and the engine-oil filter. Note: The drain plug is attached to the drain hose. Note: Dispose the used oil at a recycling center. Fill with oil as specified in the table titled Use These SAE Viscosity Oils (Figure 29). 1. Park the machine so that the drain side is slightly lower than the opposite side to ensure that the oil drains completely. 2.
4. Torque the plug to 14 N∙m (125 in-lb). g027517 Figure 33 g027477 Servicing the Spark Plug Figure 32 5. Service Interval: Every 200 hours—Check the spark plug(s) condition and gap. Slowly pour approximately 80% of the specified oil into the filler tube (Figure 33). Every 500 hours—Replace the spark plug(s). The spark plug is RFI compliant. Equivalent alternate brand plugs can also be used. Type: Champion XC12YC Air Gap: 0.76 mm (0.03 inch) Removing the Spark Plug 31 1.
g027478 Figure 34 Checking the Spark Plug 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. g027938 Figure 36 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. Cleaning the Blower Housing 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 and others and can damage property. g027959 • 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 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.
Charging the Battery Servicing the Fuses Service Interval: Before storage—Charge the battery and disconnect the battery cables. The electrical system is protected by fuses. It requires no maintenance; however, if a fuse blows, check the component or circuit for a malfunction or short. 1. 2. Remove the battery from the chassis; refer to Removing the Battery (page 34). Fuse type: Charge the battery for a minimum of 1 hour at 6 to 10 A.
Drive System Maintenance Releasing the Electric Brake Checking the Tire Pressure The electric brake releases by manually rotating the link arms forward. Once the electric brake is energized, the brake resets. Service Interval: Every 25 hours—Check tire pressure. Maintain the air pressure in the front and rear tires as specified. Uneven tire pressure can cause an uneven cut. Check the pressure at the valve stem (Figure 41). Check the tires when they are cold to get the most accurate pressure reading.
Hydraulic System Maintenance Note: Change the filter and fluid at the same time. Do not reuse fluid. Once you install the new filter and add fluid, purge any air in the system. Hydraulic System Fluid Specification Removing the Hydraulic System Filters Oil Type: Toro HYPR-OIL® 500 or 20W-50 motor oil. System Capacity: approximately 4.5 L (152 oz) with a filter change. 1. Shut off the engine, wait for all moving parts to stop, and allow engine to cool. Remove the key and engage the parking brake.
g027994 Figure 45 Right side shown 1. Transaxle drive 2. Oil filter 4. Screws 5. Vent plug 3. Filter guard 4. Carefully clean area around the filters. Note: Ensure that no dirt or contamination enters the hydraulic system. 5. g027477 Figure 46 Place a container below the filter to catch the fluid that drains when you remove the filter and vent plugs. 2. Install the filter guards over each filter as previously removed. 6. Locate and remove the vent plug on each transmission 7.
Mower Maintenance Bleeding the Hydraulic System 1. Sit on the seat. Start the engine, move the throttle control to the 1/2-throttle position, and disengage the parking brake. A. 2. Servicing the Cutting Blades Move the bypass levers into the pushing the machine position; refer to the Pushing the Machine by Hand (page 22). B. With the bypass valves open and the engine running, slowly move the motion-control levers in both forward and reverse (5 or 6 times). C.
3. Measure from the tip of the blade to the flat surface (Figure 49). g006530 Figure 47 1. Cutting edge 3. Wear/slot forming 2. Curved area 4. Damage g014973 Figure 49 Checking for Bent Blades 1. Blade (in position for measuring) Note: Park the machine on a level surface for the following procedure. 2. Level surface 3. Measured distance between blade and the surface (A) 1. 2. Raise the mower deck to the highest height-of-cut position. 4.
Removing the Blades Replace a blade if it hits a solid object, if the blade is out of balance, or if the blade is bent. For best 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. 2. Remove the blade bolt, curved washer, and blade from the spindle shaft (Figure 52). g014973 Figure 51 1.
g000553 Figure 54 1. Blade 3. 2. Balancer Repeat this procedure until the blade is balanced. Installing the Blades 1. g005278 Figure 55 Install the blade onto the spindle shaft (Figure 52). Important: The curved part of the blade 1. Blades side to side 3. Outside cutting edges 2. Sail area of the blade 4. measure from the tip of the blade to the flat surface here. must point upward toward the inside of the mower to ensure proper cutting. 2.
9. 10. Note: To raise the front of the mower, tighten Check the side-to-side adjustments again. Repeat this procedure until the measurements are correct. the adjustment nut. To lower the front of the mower, loosen the adjustment nut. Continue leveling the deck by checking the front-to-rear blade slope; refer to Adjusting the Front-to-Rear Blade Slope (page 43). Adjusting the Front-to-Rear Blade Slope Check the front-to-rear blade level any time you install the mower.
8. Slide the mower deck out from underneath the machine. Note: Retain all parts for future installation. Installing the Mower g014635 1. Park the machine on a level surface and disengage the blade-control switch. 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.
Mower Belt Maintenance Inspecting the Belts Service Interval: Every 25 hours—Check the belts for wear or cracks. Check the belts for cracks, frayed edges, burn marks, or any other damage. Replace damaged belts. Replacing the Mower Belt The signs of a worn belt include squealing while the belt is rotating, blades slipping while cutting grass, and frayed edges, burn marks, and cracks on the belt. Replace the mower belt if any of these conditions are evident. g005192 Figure 61 1. Mower deck 5. Spring 2.
7. Using a spring-removal tool, install the idler spring over the deck hook, and place tension on the idler pulley and mower belt (Figure 63). 8. Install the pulley covers (Figure 62). Cleaning Washing the Underside of the Mower Service Interval: After each use—Clean the mower-deck housing. Wash the underside of the mower after each use to prevent grass buildup for improved mulch action and clipping dispersal. Important: You can wash the machine with mild detergent and water.
8. 9. Turn the water off and remove the coupling from the washout fitting. Storage Note: If the mower is not clean after a single washing, soak it and let it stand for 30 minutes. Then, repeat the process. Cleaning and Storage 1. Disengage the blade-control switch, move the motion-control levers outward to the PARK position, shut off the engine, and remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine.
F. Dispose of fuel properly. Recycle pursuant to local codes. Important: Do not store gasoline with stabilizer/conditioner over 90 days. 10. Remove the spark plug(s) and check its condition; refer to Servicing the Spark Plug (page 31). With the spark plug(s) removed from the engine, pour 2 tablespoons of engine oil into the spark plug hole. Use the starter to crank the engine and distribute the oil inside the cylinder. Install the spark plug(s). Do not install the wire on the spark plug(s). 11.
Troubleshooting Problem Possible Cause Corrective Action The fuel tank is showing signs of collapsing or the machine is showing signs of frequently running out of fuel. 1. The air cleaner paper element is clogged. The engine overheats. 1. The engine load is excessive. 1. Reduce the 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.
Problem The machine does not drive. There is an abnormal vibration. The cutting height is uneven. Possible Cause 1. The bypass valves are open. 1. Close the tow valves. 2. The traction belts are worn, loose, or broken. 3. The traction belts are off the pulleys. 4. The transmission has failed. 2. Contact an Authorized Service Dealer. 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.
Schematics g028022 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.
