Form No. 3394-178 Rev B TimeCutter® SS 4250 Riding Mower Model No. 74723—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.
Drive System Maintenance .................................. 37 Checking the Tire Pressure............................... 37 Releasing the Electric Brake ............................. 37 Mower Maintenance............................................. 38 Servicing the Cutting Blades ............................. 38 Leveling the Mower Deck.................................. 40 Removing the Mower........................................ 42 Mower Belt Maintenance ..................................
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.
Towing Safety • Do not make sudden turns or rapid speed changes. • Remove or mark obstacles such as rocks, tree • Do not attach towed equipment except at the hitch limbs, etc. from the mowing area. Tall grass can hide obstacles. point. • 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.
• If fuel is spilled on clothing, change clothing must know that may not be included in the ANSI standards. immediately. • Stop the engine, move the motion-control levers • Never overfill the fuel tank. Replace gas cap and to neutral and outward to the park position, disengage the blade-control switch, remove key before and disconnect spark plug wire(s) performing any service, repairs, maintenance or adjustments. tighten securely. General Service: • Never operate a machine inside a closed area.
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. decal93-7009 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. decal114-1606 114-1606 decal105-7015 105-7015 For Models with 42 Inch Decks 1.
decal119-8815 decalbatterysymbols 119-8815 1. Parking position 4. Neutral 2. Fast 3. Slow 5. Reverse 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.
decal131-1097 131-1097 1. Oil drain decal131-4036 131-4036 1. Maximum drawbar pull 36 kg (80 lb) 2. Read the Operator's Manual.
decal121-0772 121-0772 1. Fast 2. Continuous variable setting 4. Choke 5. Power take-off (PTO), Blade control switch 3.
decal131-3947 131–3947 1. Trim—slow 2. Tow—medium 3. Mow—fast 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.
Product Overview g028161 Figure 4 1. Deflector 6. Operator seat 2. Rear drive wheel 7. Smart Speed™ lever 3. Control panel 8. Footrest 4. Motion-control levers 5. Height of cut lever 9. Front caster wheel g027839 Figure 5 Control Panel 1. Throttle 3. blade-control switch (power take-off) 2. Ignition switch 4. Choke Controls Become familiar with all of the controls in Figure 4 and Figure 5 before you start the engine and operate the machine.
Blade-Control Switch (Power Take-off) The blade-control switch, represented by a power take-off (PTO) symbol, engages and disengages power to the mower blades (Figure 5). Motion-Control Levers and Park Position 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.
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.
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, 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. Think Safety First Filling the Fuel Tank Note: Ensure that the engine is shut off and the Operating Safety motion controls are in the parked position.
Understanding the Safety-Interlock System WARNING If 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: • The blades are disengaged. • The motion-control levers are in the park position.
12. power to any attachments that draw power from the engine, including the mower deck and cutting blades. While the engine is running, move the motion-control levers to the center, unlocked position, engage the blade-control switch, and rise slightly from the seat. Engaging the Blades Note: The engine should stop. Important: Do not engage the blades when parked in tall grass. Belt or clutch damage can occur.
2. Move the throttle lever to the Fast position (Figure 13). 3. Turn the ignition key to Off (Figure 5) and remove the key. Driving 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.
Using the Smart SpeedTM Control System This is the medium speed. The suggested uses for this speed are as follows: • Bagging The Smart Speed TM Control-System lever, located below the operating position (Figure 16), gives the operator a choice to drive the machine at 3 ground speed ranges—trim, tow, and mow. • Mulching Mow This is the fastest speed. The suggested uses for this speed are as follows: • Normal mowing • Transporting the machine Driving Forward 1.
Driving Backward Adjusting the Height-of-Cut Note: Always use caution when backing up and Note: The transport position is the highest turning. 1. Move the levers to the center, unlocked position. 2. To go backward, look behind you and down, as you slowly pull the motion-control levers rearward (Figure 18). 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).
3. Adjust the anti-scalp rollers to one of the following positions: • Upper hole—use this position with the mower deck in the 63mm (2-1/2 inch) and below height-of-cut positions (Figure 20). • Lower hole—use this position with the mower deck in the 76mm (3 inch) and above height-of-cut positions (Figure 20). g019929 Figure 20 1. Anti-scalp roller 4. Upper hole—the mower deck in the 63mm (2-1/2 inch) and below height-of-cut positions 2.
2. Loosen the lower bolt just enough to pivot the control lever fore or aft (Figure 22). Tighten both bolts to secure the control in the new position. 3. Repeat the adjustment for the opposite control lever. Pushing the Machine by Hand Important: Always push the machine by hand. Never tow the machine because damage may occur. This machine has an electric brake mechanism and to push the machine the ignition key needs to be in the Run position.
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. • Never remove the grass deflector from the mower because the grass deflector routes material down toward the turf.
WARNING 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. • Ensure the length of ramp is at least four times (4X) as long as the height of the trailer or truck bed to the ground.
Operating Tips Avoid Cutting Too Low Fast Throttle Setting 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. 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 by uncut grass.
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. Before each use or daily • • • • • Check the safety-interlock system. Check the engine-oil level. Clean the air-intake screen. Check the cutting blades. Inspect the grass deflector for damage After each use • Clean the mower deck housing.
Pre-Maintenance 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 Base Grease Greasing the Bearings The following components can be accessed by raising the seat: 1. Park the machine on a level surface and disengage the blade-control switch. • Serial plate 2.
5. Engine Maintenance Wipe up any excess grease. Servicing the Air Cleaner Note: Service the air cleaner more frequently (every few hours) if operating conditions are extremely dusty or sandy. Removing the Elements 1. Park the machine on a level surface and disengage the blade-control switch (PTO). 2. Engage the parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3.
Servicing the Engine Oil Oil Type: Detergent oil (API service SF, SG, SH, SJ, or SL) Crankcase Capacity: 2.4 L (2.5 US qt) Viscosity: See the table below. g027802 Figure 30 Servicing the Foam Element Service Interval: Every 25 hours/Monthly (whichever comes first)—Clean the foam element (more often in dusty, dirty conditions). g027924 Figure 31 Every 100 hours/Yearly (whichever comes first)—Replace the foam element (more often in dusty, dirty conditions).
g027799 g027475 Figure 32 Changing the Engine Oil g027823 Service Interval: After the first 5 hours/After the first month (whichever comes first)—Change the engine oil. Figure 33 Every 100 hours/Yearly (whichever comes first)—Change the engine oil (more often in dusty, dirty conditions). Note: Dispose of the used oil at a recycling center. 1. Park the machine so that the drain side is slightly lower than the opposite side to assure the oil drains completely. 2.
4. Changing the Engine-Oil Filter 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 34). Service Interval: Every 100 hours/Yearly (whichever comes first)—Change the oil filter (more often in dusty, dirty conditions). Note: Change the engine-oil filter more frequently when operating conditions are extremely dusty or sandy. 1. Drain the oil from the engine; refer to Changing the Engine Oil (page 31). 2.
Installing the Spark Plug 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. Tighten the spark plug(s) to 25–30 N-m (18.5–22.1 ft-lb). Type: Champion RN9YC Air gap: 0.76 mm (0.03 inch) Removing the Spark Plug 1. Disengage the PTO and ensure the parking brake is engaged. 2.
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. g027939 • 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 4. Disconnect the negative (black) ground cable from the battery post (Figure 41). Retain all fasteners. WARNING 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. • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable.
2. Charge the battery for a minimum of 1 hour at 6 to 10 amps. Do not overcharge the battery. 3. When the battery is fully charged, unplug the charger from the electrical outlet, then disconnect the charger leads from the battery posts (Figure 42). g014921 Figure 43 1. Main-30 amp 2. Charge circuit-25 amp g000538 Figure 42 1. Positive battery post 3. Red (+) charger lead 2. Negative battery post 4. Black (-) charger lead 4. Installing the Battery 1.
Drive System Maintenance Checking the Tire Pressure 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 uneven cut. Check the pressure at the valve stem (Figure 44). Check the tires when they are cold to get the most accurate pressure reading. g027911 Figure 45 Refer to the maximum pressure suggested by the tire manufacturer on the sidewall of the caster wheel tires. 1.
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. g006530 Figure 46 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 48). g014973 Figure 50 1. Opposite blade edge (in position for measuring) g014973 Figure 48 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) 4. A. Rotate the same blade 180 degrees, so that the opposing cutting edge is now in the same position (Figure 49).
Installing the Blades 1. Install the blade onto the spindle shaft (Figure 51). Important: The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. g027833 3. Curved washer 4. Blade bolt 3. Torque the blade bolt to 47 to 88 N-m (35 to 65 ft-lb). Check to ensure the mower deck is level any time you install the mower or when you see an uneven cut on your lawn.
9. Check the side-to-side adjustments again. 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 41). 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 5/16 inch (7.
g014634 Figure 57 1. Adjusting rod 3. Lock nut 2. Adjusting block g014635 7. 8. 9. Figure 58 To raise the front of the mower, tighten the adjustment nut. To lower the front of the mower, loosen the adjustment nut. 1. Front support rod After adjustment, check the front-to-rear slope again. Continue adjusting the nut until the front blade tip is 1/16-5/16 inch (1.6-7.9 mm) lower than the rear blade tip (Figure 56 ). 5. 3. Deck bracket 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 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. 1.
Replacing the Grass Deflector Slide rod through second grass deflector bracket (Figure 61). 7. Service Interval: Before each use or daily—Inspect the grass deflector for damage 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. 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.
Cleaning 6. Disengage the blade-control switch, stop the engine, and remove the ignition key. Wait for all moving parts to stop. Washing the Underside of the Mower 7. Turn the water off and remove the coupling from the washout fitting. Note: If the mower is not clean after one Service Interval: After each use—Clean the mower deck housing. washing, soak it and let it stand for 30 minutes. Then repeat the process. 8.
Storage cylinder. Install the spark plug(s). Do not install the wire on the spark plug(s). Cleaning and Storage 12. Clean any dirt and chaff from the top of the mower. 1. Disengage the blade-control switch, move the motion controls outward to the park position, stop the engine, and remove the key. 13. Scrape any heavy buildup of grass and dirt from the underside of the mower, then wash the mower with a garden hose. 2.
Troubleshooting Problem Possible Cause 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 clogged. The engine overheats. 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.
Problem The machine does not drive. There is 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 of 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.
Notes:
Notes:
The Toro Total Coverage Warranty TimeCutter and TITAN Mowers 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.
