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Original Instructions (EN)
ProLine Commercial Walk-Behind
Mower
with 36in, 48in, 54in, or 60in Cutting Unit
Model No. 44409—Serial No. 400000000 and Up
Model No. 44410—Serial No. 400000000 and Up
Model No. 44423—Serial No. 400000000 and Up
Model No. 44424—Serial No. 400000000 and Up
Model No. 44427—Serial No. 400000000 and Up
Model No. 44430—Serial No. 400000000 and Up
Model No. 44436—Serial No. 400000000 and Up
Model No. 44448—Serial No. 400000000 and Up
Model No. 44454—Serial No. 400000000 and Up
Model No. 44460—Serial No. 400000000 and Up
Form No. 3432-306 Rev F
*3432-306*
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Table of Contents
Related Manuals for Toro 44409
Summary of Contents for Toro 44409
- Page 1 ProLine Commercial Walk-Behind Mower with 36in, 48in, 54in, or 60in Cutting Unit Model No. 44409—Serial No. 400000000 and Up Model No. 44410—Serial No. 400000000 and Up Model No. 44423—Serial No. 400000000 and Up Model No. 44424—Serial No. 400000000 and Up Model No.
- Page 2 Section 4442 or 4443 to use or operate the engine on additional information, contact an Authorized Service any forest-covered, brush-covered, or grass-covered Dealer or Toro Customer Service and have the model land unless the engine is equipped with a spark and serial numbers of your product ready.
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Page 3: Table Of Contents
Contents Servicing the Caster Wheels and Bearings............36 Cooling System Maintenance ......37 Safety ............... 4 Cleaning the Air-Intake Screen ......37 General Safety........... 4 Cleaning the Cooling System......37 Safety and Instructional Decals ......4 Brake Maintenance ..........38 Product Overview ............. -
Page 4: Safety
Safety • Keep bystanders and children out of the operating area. Do not allow children to operate the machine. Allow only people who are responsible, trained, This machine has been designed in accordance with familiar with the instructions, and physically ANSI B71.4-2017. - Page 5 decal93-7818 93-7818 decal126-1400 126-1400 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 115 to 149 N∙m (85 to 110 1. Warning—read the Operator’s Manual for information about ft-lb). attachments; certain attachments can cause you to fall. decal98-1977 98-1977 decal130-0731...
- Page 6 decal138-8816 decal131-3536 138-8816 131-3536 4. Neutral 1. PTO—disengage 1. Battery 4. Parking brake 2. Fast 5. Reverse 2. Time 5. Engine—start 3. Slow 6. Traction controls 3. Power takeoff (PTO) 6. Engage the handle bars. decal138-8820 decal133-4604 138-8820 133-4604 1. Disengage the hydrostatic 2.
- Page 7 Decal 139-7936 is for 91cm (36-inch) models only. decal139-2874 139-2874 1. Traction controls 4. Neutral decal139-7936 139-7936 2. Fast 5. Reverse 3. Slow 6. PTO—disengage 1. Belt routing decal138-8818 138-8818 8. Thrown object hazard—keep bystanders away. 1. Warning—read the Operator’s Manual. 2.
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Page 8: Product Overview
Controls Product Overview Control Panel g299386 Figure 4 g299567 Figure 3 1. Parking-brake lever 7. Rear reference bar 2. Adjustable reference bar 8. Blade-control switch 1. Side discharge 5. Control panel (PTO) 2. Height-of-cut lever 6. Parking-brake lever 3. Left motion-control lever 9. -
Page 9: Specifications
Motion-Control Levers approved attachments and accessories. To ensure optimum performance and continued safety Use the motion-control levers to drive the machine certification of the machine, use only genuine Toro forward, reverse, and turn either direction (Figure replacement parts and accessories. Replacement... -
Page 10: Before Operation
Operation • If you spill fuel, do not attempt to start the engine; avoid creating a source of ignition until the fuel vapors have dissipated. Note: Determine the left and right sides of the • Do not fill containers inside a vehicle or on a truck machine from the normal operating position. -
Page 11: Using The Safety-Interlock System
Note: A fuel stabilizer/conditioner is most effective when mixed with fresh fuel. To minimize the chance of varnish deposits in the fuel system, use fuel stabilizer at all times. Filling the Fuel Tank g031282 Figure 7 1. The triangles light up when the interlock components are in the correct position. -
Page 12: Performing Daily Maintenance
Use your full attention while operating the – Use only accessories and attachments machine. Do not engage in any activity that approved by The Toro® Company. causes distractions; otherwise, injury or property damage may occur. – Be sure of your footing while using this machine, especially when backing up. -
Page 13: Operating The Parking Brake
Operating the Parking the blade(s) and not in front of the discharge chute. Brake – Use extreme caution when reversing or pulling the machine toward you. Always engage the parking brake when you shut – Stop the blade if you must transport the off the machine or leave the operator position. -
Page 14: Starting The Engine
Starting the Engine Note: If you release the motion-control levers and do not engage the parking brake, the engine will shut off after 5 seconds. g292627 Figure 9 Shutting Off the Engine g289750 Figure 10... -
Page 15: Operating The Mower-Blade-Control Switch (Pto)
Operating the Disengaging the Mower Blades (PTO) Mower-Blade-Control Figure 12 Figure 13 show 2 ways to disengage Switch (PTO) the mower blades. Use the blade-control switch (PTO) in conjunction with the motion-control levers to engage and disengage the mower blades. Engaging the Mower Blades (PTO) g299432 Figure 12... -
Page 16: Driving The Machine
Driving the Machine Note: The farther you move the motion-control levers in either direction, the faster the machine The throttle control regulates the engine speed as moves in that direction. measured in rpm (revolutions per minute). Place Note: To stop, move the motion-control levers the throttle control in the F position for best back to the N... -
Page 17: Using The Adjustable Reference Bar
Using the Adjustable Reference Bar Use the adjustment lever to change the position of the adjustable reference bar and limit the maximum forward speed (Figure 17). Move the lever to the upper position to decrease the maximum speed; move the lever to the lower position to increase the maximum speed. -
Page 18: Adjusting The Height Of Cut
Adjusting the Height of Cut You can adjust the height of cut from 38 to 114 mm (1-1/2 to 4-1/2 inches) in 6 mm (1/4 inch) increments. g303747 Figure 18... -
Page 19: Adjusting The Anti-Scalp Rollers
Adjusting the Anti-Scalp After Operation Rollers After Operation Safety Models with a 122 cm (48 inch), 137 cm (54 inch), or 152 cm (60 General Safety inch) Deck Only • Always shut off the machine, remove the ignition Whenever you change the height-of-cut, adjust the key (if equipped), wait for all moving parts to stop, height of the anti-scalp rollers. -
Page 20: Pushing The Machine By Hand
Pushing the Machine by Operating the Machine Hand Move the bypass levers forward through the keyhole and down to lock them in place as shown in Figure Important: Always push the machine by hand. Note: Do this for each lever. Do not tow the machine, because towing may damage it. - Page 21 g299488 Figure 23 1. Back the machine up the 2. Walk the machine down ramp. the ramp. Shut off the engine, remove the key, and engage the parking brake. Tie down the machine near the front caster wheels and the rear bumper with straps, chains, cable, or ropes (Figure 24).
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Page 22: Maintenance
Do not allow untrained personnel to service the • To ensure safe, optimal performance of the machine. machine, use only genuine Toro replacement • If the engine must be running to perform a parts. Replacement parts made by other maintenance adjustment, keep your hands, feet,... -
Page 23: Pre-Maintenance Procedures
• Adjust the caster-pivot bearing. Every 500 hours • After the initial change—change the hydraulic-system filters and fluid when using Toro® HYPR-OIL™ 500 fluid. (Change it more often under dirty or dusty conditions) • Replace the fuel filter. Every 800 hours •... -
Page 24: Lubrication
Lubrication Greasing the Caster Wheel Bearings Greasing the Machine Service Interval: Every 25 hours—Grease the caster wheel bearings. Grease the machine more often in dirty or dusty conditions. Grease Type: No. 2 lithium grease Grease Type: No. 2 lithium or molybdenum grease Park the machine on a level surface, disengage the blade-control switch, and engage the parking Park the machine on a level surface, disengage... -
Page 25: Engine Maintenance
Engine Maintenance Unscrew the cover knobs and remove the air-cleaner cover (Figure 28). Unscrew the hose clamp and remove the Engine Safety air-cleaner assembly (Figure 28). • Do not change the governor speed or overspeed Carefully pull the foam element off the paper the engine. - Page 26 Place the air-cleaner cover into position and Remove the safety filter only to replace it. tighten the cover knob (Figure 28). Inspecting the Filters Servicing a Heavy Duty Air Cleaner Inspect the safety filter. If it is dirty, replace both the safety and primary filters.
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Page 27: Servicing The Engine Oil
Service Interval: Before each use or daily Engine-Oil Specifications Note: Check the oil when the engine is cold. Model 44409, 44410, 44423, 44424, and 44427 WARNING Contact with hot surfaces may cause personal Oil Type: Detergent oil (API service SF, SG, SH, SJ, or SL) injury. - Page 28 Changing the Engine Oil Service Interval: After the first 8 hours Every 100 hours Note: Dispose of the used oil at a recycling center. Park the machine so that the drain side is slightly lower than the opposite side to assure the oil drains completely.
- Page 29 g299570 g235264 Figure 34 Start the engine and drive to a flat area. Check the oil level again. Changing the Engine-Oil Filter Service Interval: Every 200 hours Note: Change the engine-oil filter more frequently when operating conditions are extremely dusty or sandy.
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Page 30: Servicing The Spark Plug
Servicing the Spark Plug Service Interval: Every 100 hours Ensure that 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. -
Page 31: Fuel System Maintenance
Fuel System Maintenance DANGER In certain conditions, fuel is extremely flammable and highly explosive. A fire or g027479 explosion from fuel can burn you and others Figure 37 and can damage property. Refer to Fuel Safety (page 10) for a complete list of fuel related precautions. -
Page 32: Replacing The Fuel Filter
g300374 Figure 39 1. Fuel cap Replacing the Fuel Filter Service Interval: Every 800 hours/Yearly (whichever comes first) Do not install a dirty filter if it is removed from the fuel line. Note: Wipe up any spilled fuel. Park the machine on a level surface, disengage the PTO, and engage the parking brake. -
Page 33: Electrical System Maintenance
Electrical System WARNING Incorrectly removing the cables from Maintenance battery could damage the machine and cables, causing sparks. Sparks can Electrical System Safety cause the battery gasses to explode, resulting in personal injury. • Disconnect the battery before repairing the •... -
Page 34: Servicing The Fuses
Charging the Battery Servicing the Fuses The electrical system is protected by fuses. It requires WARNING no maintenance; however, if a fuse blows, check the Charging the battery produces gasses that component/circuit for a malfunction or short. can explode. Park the machine on a level surface, disengage Never smoke near the battery and keep sparks the PTO, and engage the parking brake. -
Page 35: Drive System Maintenance
Drive System Maintenance Checking the Tire Pressure g300244 g300245 Figure 45 1. Nut 2. Lower control rod Start the machine and move the throttle control to the F position. To find the neutral position, move the lower control rod up or down until the tire stops rotating (Figure 45). -
Page 36: Adjusting The Caster-Pivot Bearings
If the machine pulls to the right, decrease the Tighten the locknut until the spring washers are speed for the left lever or increase the speed flat, and then back off a 1/4 turn to properly set for the right lever. the preload on the bearings (Figure 47). -
Page 37: Cooling System Maintenance
Cooling System Maintenance Cleaning the Air-Intake Screen Remove any buildup of grass, dirt, or other debris from the cylinder and cylinder head cooling fins, the air-intake screen on the flywheel end, and the carburetor-governor levers and linkage. This helps ensure adequate cooling and correct engine speed to reduce the possibility of overheating or mechanical damage to the engine. -
Page 38: Brake Maintenance
Brake Maintenance Testing the Parking Brake Service Interval: Before each use or daily Before each use, test the parking brake on both a level surface and slope. Always engage the parking brake when you stop the machine or leave it unattended. If the parking brake does not hold securely, adjust it. -
Page 39: Belt Maintenance
Belt Maintenance Check the parking brake function; refer to Testing the Parking Brake (page 38). Inspecting the Belts Service Interval: Every 25 hours—Check the belts for wear or cracks. Replace the belt if it is worn. The signs of a worn belt include squealing while the belt is rotating;... - Page 40 2. Clutch pulley 5. Spring-removal tool 1. Cover 2. Screw (4) 3. Mower belt Using a spring-removal tool (Toro Part No. Route the new belt around the clutch pulley and 92-5771), remove the idler spring from the deck mower pulleys (Figure 53 Figure 54).
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Page 41: Adjusting The Idler Pulley Arm
Adjusting the Idler Pulley Service Interval: Yearly—Check the mower deck idler arm for wear. If the length of the spring is less than 15.2 cm (6 inches) or if the idler pulley arm contacts the idler stop shown in Figure 55, adjust the idler pulley arm. - Page 42 g300384 Figure 59 1. Belt 2. Idler pulley g300383 Figure 57 Install the spring to the spring anchor. Use the drive ratchet to apply tension to the spring to 1. Clutch pulley 3. Bolt allow the belt to pass over the lip of the idler 2.
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Page 43: Controls System Maintenance
Controls System Maintenance Adjusting the Motion-Control Levers If the motion-control levers do not align horizontally, adjust the motion-control levers. Park the machine on a level surface, disengage the PTO, and engage the parking brake. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. -
Page 44: Hydraulic System Maintenance
Safely relieve all pressure in the hydraulic system before performing any work on the hydraulic system. Hydraulic System Specifications Hydraulic Fluid Type: Toro® HYPR-OIL™ 500 hydraulic fluid Hydraulic System Fluid Capacity: 4.7 L (159 fl oz) g300398 Figure 62 Important: Use the fluid specified. - Page 45 Important: Shut off the engine, remove the key, and wait Do not allow dirt to enter the for all moving parts to stop before leaving the hydraulic system, or contamination may operating position. occur. Allow the engine to cool. Place a drain pan below the filter to catch the fluid that drains when the filter and vent plugs Remove the 2 bolts and nuts from the transaxle are removed.
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Page 46: Bleeding The Hydraulic System
Adding Hydraulic Fluid Verify that the vent plugs are removed before adding the fluid. Slowly pour the specified fluid through the expansion reservoir until fluid comes out of 1 of the vent-plug holes; refer to Hydraulic System Specifications (page 44). Install the vent plug (Figure 64). -
Page 47: Mower Deck Maintenance
Mower Deck Maintenance Blade Safety A worn or damaged blade can break and a piece could be thrown toward you or bystanders, resulting in serious personal injury or death. g006530 Figure 67 • Inspect the blades periodically for excessive wear 1. - Page 48 (Figure 70). genuine Toro replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards. Hold the blade end using a rag or thickly padded glove.
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Page 49: Leveling The Mower Deck
g006888 Figure 73 1. Measure from a level 2. Measure the blade at g004536 surface points B and C Figure 72 1. Sail area of the blade 3. Curved washer The difference between measurements B and C 2. Blade 4. Blade bolt should be no more than 6 mm (1/4 inch). -
Page 50: Replacing The Grass Deflector
If the front-to-rear pitch is not correct, refer to Leveling the Mower Deck (page 49). Leveling the Mower Deck Park the machine on a level surface, disengage the PTO, and engage the parking brake. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. - Page 51 g297573 Figure 78 1. Rod and spring assembly 3. Rod, short end, moved installed behind the mower bracket 2. Loop end of the spring 4. Short end, retained by g302010 installed into the notch in mower bracket. Figure 77 the deflector bracket 1.
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Page 52: Cleaning
Cleaning Cleaning under the Mower Service Interval: Before each use or daily Remove the grass buildup under the mower daily. Park the machine on a level surface, disengage the PTO, and engage the parking brake. Shut off the engine, remove the key, and disconnect the spark-plug wires from the spark plugs. -
Page 53: Storage
Storage Add fuel stabilizer/conditioner to fresh fuel in the tank. Follow mixing instructions from the fuel stabilizer manufacturer. Do not Storage Safety use an alcohol-based stabilizer (ethanol or methanol). • Always shut off the machine, remove the ignition Run the engine to distribute conditioned fuel key, wait for all moving parts to stop, and allow through the fuel system for 5 minutes. -
Page 54: Troubleshooting
Troubleshooting Problem Possible Cause Corrective Action The fuel tank is showing signs of collapsing 1. The air-cleaner paper element clogged. 1. Clean the paper element. or the machine is frequently showing signs of running out of fuel. The engine overheats. 1. - Page 55 Problem Possible Cause Corrective Action The machine does not drive. 1. The hydraulic-fluid reservoir is low. 1. Add hydraulic fluid to the reservoir. 2. Air is in the hydraulic system. 2. Bleed the air out the hydraulic system. 3. A pump-drive belt slips. 3.
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Page 56: Schematics
Schematics g302778 Electrical Schematic for Machines with Standard Air Cleaner—139-2853 (Rev. A) - Page 57 g303695 Electrical Schematic for Machines with Heavy Duty Air Cleaner—138–691 (Rev. A)
- Page 58 Notes:...
- Page 59 Notes:...
- Page 60 While the exposure from Toro products may be negligible or well within the “no significant risk” range, out of an abundance of caution, Toro has elected to provide the Prop 65 warnings. Moreover, if Toro does not provide these warnings, it could be sued by the State of California or by private parties seeking to enforce Prop 65 and subject to substantial penalties.