Form No. 3435-870 Rev A Commercial Walk-Behind Mower Fixed Deck, T-Bar, Gear Drive with 32in or 36in Cutting Unit Model No. 30672—Serial No. 405670000 and Up Model No. 39674—Serial No. 405670000 and Up Register at www.Toro.com.
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Contents Replacing the Traction-Drive Belt...................... 34 Replacing the Drive Belt ................................... 34 Replacing the Mower Belt ................................. 35 Adjusting the Mower Belt Tension ..................... 35 Adjusting the PTO-Engagement Linkage ......................................................... 36 Adjusting the PTO-Safety Switch ...................... 37 Mower Deck Maintenance.................................... 38 Blade 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, familiar with the instructions, and physically capable to operate the machine. This machine has been designed in accordance with ANSI B71.4-2017. • Stop the machine, shut off the engine, remove General Safety the ignition key (if equipped), and wait for all moving parts to stop before servicing, fueling, or unclogging the machine.
decal98-3296 98-3296 1. Belt routing 2. Engine decal93-7442 93-7442 1. Parking brake decal98-5130 98-5130 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 102 to 106 N∙m (75 to 80 ft-lb). decal106-5517 106-5517 decal95-5537(gear) 95-5537 1. Read the Operator's Manual for instructions on operating the cutting blade. 2. Push forward to engage. 1. Warning—do not touch the hot surface. 3. Pull back to disengage. decal98-3264 98-3264 1.
decal112-9028 112-9028 1. Warning—stay away from moving parts; keep all guards and shields in place. decal121-6049 121–6049 1. Thrown object hazard—keep bystanders away. 3. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts. decal131-1180 131-1180 1. Read the Operator's Manual. 2. Short, light grass; dry conditions 2. Thrown object hazard, mower—do not operate the mower with guards or shields removed. 6 3. Bagging setting 4.
decal133-8062 133-8062 decal132-4708 132-4708 1. Attention—do not adjust the shift lever while moving. 2. Stop moving before adjusting the shift lever. decal130-8374 130-8374 1. Fast 3. Engine—stop 2. Slow 7 4.
decal140-1877 140-1877 1. Warning—read the Operator’s Manual. 5. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts; keep all guards and shields in place. 2. Warning—all operators should be trained before operating the machine. 3. Warning—wear hearing protection. 6. Thrown object hazard—keep bystanders away. 7. Warning—shut off the engine and disconnect the spark plug before performing maintenance. 4. Thrown object hazard, mower—keep the deflector lowered. 8.
Controls Product Overview Become familiar with all the controls before you start the engine and operate the machine. Control Panel g306582 Figure 3 1. Side discharge 5. T-bar control 2. Mower deck 3. Spark plug 6. Handle 7. Recoil-start handle 4. Fuel tank 8. Front caster wheel g001446 Figure 4 1. Throttle control 7. Parking-brake lever 2. Blade-control bail 3. Blade-control lever (power takeoff) 8. Choke 9. Key switch 4. Gear-shift lever 10. Upper handle 5. Upper control bar 11.
Blade-Control Lever (Power Takeoff) Specifications Use the blade-control lever in conjunction with the blade-control bail to engage and disengage power to the mower blades (Figure 4). change without notice. Note: Specifications and design are subject to 32-inch mowers: Recoil-Start Handle Pull the recoil-start handle to start the engine (Figure 3).
Operation • If you spill fuel, do not attempt to start the engine; Note: Determine the left and right sides of the machine from the normal operating position. • Do not fill containers inside a vehicle or on a truck avoid creating a source of ignition until the fuel vapors have dissipated. or trailer bed with a plastic liner. Always place containers on the ground, away from the vehicle before filling. Before Operation • Remove equipment from the truck or trailer and refuel it on the ground.
Testing 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. Test the safety-interlock system each time before you use the machine. If the safety system does not operate as described, have an Authorized Service Dealer repair the safety system immediately. Filling the Fuel Tank 1. Park the machine on a level surface. 2. Engage the parking brake. 3.
• Wet grass or leaves can cause serious injury if toward you. Stop the blade(s) when crossing gravel surfaces. you slip and contact the blade. Avoid mowing in wet conditions. – Start the engine carefully according to instructions and with your feet well away from the blade(s) and not in front of the discharge chute. • Keep your hands and feet away from the cutting unit. • Look behind and down before backing up to be sure of a clear path.
Starting the Engine • If you lose control of the machine, step away from the direction of travel of the machine. • Always keep the machine in gear when going down slopes. Do not coast downhill (applicable only to gear-drive units). Operating the Parking Brake 1. Connect the spark-plug wires. 2. Open the fuel valve. 3. Disengage the PTO and shift to the NEUTRAL position. 4. Engage the parking brakes. 5. Turn the ignition key to the RUN position.
Shutting Off the Engine Operating the Blade-Control Lever (PTO) Important: In an emergency, you can stop the engine immediately by turning the ignition key to the Off position. 1. Move the throttle lever to the SLOW position (Figure 6). 2. Idle the engine for 30 to 60 seconds before turning the ignition key to the OFF position. The blade-control lever (PTO) engages and disengages power to the mower blades. Engaging the Mower Blades 1.
Driving the Machine Using the Lower Control Bar The throttle control regulates the engine speed (rpm). Move the throttle control to the FAST position for the best mowing performance. This procedure is for driving up a curb. You can do this while driving forward or backward. WARNING Note: Some curbs do not allow the rear drive tires to contact the curb. If this happens, drive the machine up the curb at an angle. The machine can spin very rapidly.
g001452 Figure 10 1. Lower control bar—engaged g000211 Figure 9 1. Lower control bar—engaged and the machine going reverse 3. Lower control bar—engaged and the machine going forward 2. Handle Stopping the Machine 2. Pull up to assist the machine. CAUTION You or bystanders may be injured if you move or attempt to operate the machine while it is unattended. Driving Backward up a Curb 1. Disengage the mower blades. 2. Select the REVERSE position to drive the machine. 3.
Position B Use this position when bagging. g012676 Figure 11 2. Nut 1. Slot g012678 Figure 13 Positioning the Flow Baffle The following figures are only recommendations for use. Adjustments vary by grass type, moisture content, and the height of the grass. Position C This is the full open position. The suggested use for this position is as follows: Note: If the engine power draws down and the mower ground speed is the same, open up the baffle.
Side Discharging or Mulching Grass This 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 bystanders are exposed to blade contact and thrown debris. Contact with rotating mower blade(s) and thrown debris can cause serious injury or death.
Adjusting the Caster Position 1. Using the Height-of-Cut Chart (page 22), adjust the caster spacers to match with the axle hole selected (Figure 17). g001455 Figure 16 1. Axle-pivot bolt 4. 2. Axle-adjustment bolt Place a jack under the rear center of the engine frame. Raise the rear end of the engine frame up enough to remove the front 2 axle-adjustment bolts (Figure 16). g001456 Figure 17 Note: Use jack stands to support the machine. 5. 1.
Adjusting the Control Rods 1. With the wheel drive fully engaged, check the gap between the upper control bar and the fixed bar. The gap needs to be approximately 25 to 32 mm (1 to 1-1/4 inches) as shown in Figure 18. Note: The upper control bar and the fixed bar must be parallel in the engaged, relaxed, and brake positions. g018809 Figure 18 1. 25 to 32 mm (1 to 1-1/4 inches) gap 4. Upper control bar 2. Fixed control bar 3. Parking-brake lever 5. Control rod 2. Check the operation.
Height-of-Cut Chart Number of spacers below the caster Number of 1/4-inch blade spacers below the spindle Axle position 13 mm (1/2 inch) 5 mm (3/16 inch) 4 3 2 1 0 A 0 0 26 mm (1 inch) 32 mm (1-1/4 inches) 38 mm (1-1/2 inches) 45 mm (1-3/4 inches) 51 mm (2 inches) A 0 1 29 mm (1-1/8 inches) 35 mm (1-3/8 inches) 41 mm (1-5/8 inches) 48 mm (1-7/8 inches) 54 mm (2-1/8 inches) A 1 0 35 mm (1-3/8 inches) 41 mm (1-5/8 inches) 48 mm (1-7/8 inches) 54 mm (2-1/8 inches) 60 mm (2-3/8
After Operation After Operation Safety General Safety • Always shut off the machine, remove the ignition key (if equipped), wait for all moving parts to stop, and allow the machine to cool before adjusting, servicing, cleaning, or storing it. • Clean grass and debris from the machine to help prevent fires. Clean up oil or fuel spills. • Never store the machine or fuel container where there is an open flame, spark, or pilot light, such as on a water heater or on other appliances.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Maintenance Safety cutting unit, attachments, and any moving parts. Keep bystanders away. • Before adjusting, cleaning, servicing, or leaving • Keep all parts in good working condition. Replace the machine, do the following: all worn, damaged, or missing parts and decals. Keep all fasteners tight to ensure that the machine is in safe working condition. – Park the machine on a level surface.
Maintenance Service Interval Maintenance Procedure Every 200 hours • • • • Replace the paper air-cleaner element. Change the engine-oil filter. Replace the fuel filter. Replace the fuel-vent filter. Every 250 hours • Grease the transmission couplers (more often in dirty or dusty conditions). Every 400 hours • Grease the wheel bearings (more often in dirty or dusty conditions). Important: Refer to your engine owner's manual for additional maintenance procedures.
Engine Maintenance Greasing the Transmission Couplers Engine Safety Lubricate the transmission couplers and idler-arm pivots located at the rear of the machine (Figure 21). • Do not change the governor speed or overspeed the engine. • Run the engine dry or remove the fuel with a hand pump; never siphon the fuel. If you must drain the fuel tank, do it outdoors. Servicing the Air Cleaner Service Interval: Every 25 hours—Clean the foam air-cleaner element.
Servicing the Engine Oil Note: Change the oil more frequently when the operating conditions are extremely dusty or sandy. Engine-Oil Specifications Engine-Oil Type: Detergent oil (API service SF, SG, SH, SJ, or SL) Crankcase Capacity: 1.7 L (58 oz) with the filter removed; 1.5 L (51 oz) without the filter removed Viscosity: Refer to the table (Figure 24). g012619 Figure 23 1. Cover 3. Paper element 2. Hose clamp 4. Foam element Cleaning the Foam Air-Cleaner Element 1. 2.
g306583 Figure 25 1. Oil dipstick 2. Filler tube 4. Unscrew the oil dipstick and wipe the end clean (Figure 25). 5. Slide the oil dipstick into the filler tube fully, but do not thread it onto the tube (Figure 25). 6. g001466 Figure 26 Pull the dipstick out and look at the end. If the oil level is low, slowly pour enough oil into the filler tube to raise the level to the Full mark. 1.
4. Checking the Spark Plugs Install the replacement oil filter to the filter adapter, turn the oil filter clockwise until the rubber gasket contacts the filter adapter, and tighten the filter an additional 3/4 turn (Figure 27). 5. Fill the crankcase with the proper type of new oil. 6. Run the engine for approximately 3 minutes, shut off the engine, and check for oil leaks around the oil filter and drain valve. 7. Check the engine-oil level and add oil, if needed. 8. Wipe up any spilled oil.
Fuel System Maintenance DANGER In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property. Refer to Fuel Safety (page 11) for a complete list of fuel related precautions. g005243 Figure 31 Servicing the Fuel System 1. Fuel filter 2. Clamp 3. Fuel-shutoff valve Draining the Fuel Tank 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2.
6. Install a new filter and move the hose clamps close to the filter. 7. Open the fuel-shutoff valve at the fuel tank (Figure 31). 8. Check for fuel leaks and repair, if needed. 9. Wipe up any spilled fuel. Drive System Maintenance Checking the Tire Pressure Service Interval: Every 50 hours/Monthly (whichever comes first) Servicing the Fuel-Vent System Maintain the air pressure in the rear tires at 83 to 97 kPa (12 to 14 psi). Uneven tire pressure can cause an uneven cut (Figure 34).
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. Cleaning the Cooling System g001472 Figure 35 1. Air-intake screen 2.
Brake Maintenance Servicing the Parking Brake 3. Check the brake before you adjust it; refer to Checking the Parking Brake (page 33). 4. Disengage the parking brake. 5. To adjust the brake, rotate the wing nuts on the brake rods (Figure 36). Check the brakes on both a level surface and a slope. Turn the wing nuts clockwise to tighten the brake and counterclockwise to loosen the brake. Always engage the parking brake when you stop the machine or leave it unattended.
Belt Maintenance 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; the blades slipping while cutting grass; and frayed edges, burn marks, and cracks on the belt. g001474 Replacing the Traction-Drive Belt Figure 37 Service Interval: Every 50 hours/Monthly (whichever comes first)—Check the traction-drive belt. 1.
8. 9. Install the mower belt (Figure 38). Check the belt guide under the engine frame for the proper adjustment (Figure 38). Note: The distance between the belt guide and mower belt should be 19 mm (3/4 inch) when you engage the mower belt. Adjust the belt, if necessary. The disengaged belt should not drag or fall off the pulley when the guides are properly adjusted. 10. Remove the hairpin cotter and clevis pin from the bell crank (Figure 39). 11.
Adjusting the PTO-Engagement Linkage Important: The belt must be tight enough to not slip during heavy loads, while cutting grass. Over-tensioning the belt reduces the life of the spindle bearing, belt, and idler pulley. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Loosen the locknut on the turnbuckle (Figure 41). 4.
Adjusting the PTO-Safety Switch g017649 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Ensure that the assist arm is against the front assist-arm stop. 4. If needed, adjust the PTO-safety switch by loosening the bolts securing the switch bracket (Figure 44). 5.
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 45 • Inspect the blades periodically for excessive wear or damage. • Use care when checking the blades. Wear gloves and use caution when servicing them. Only replace the blades; never straighten or weld them. 1. Cutting edge 3. Wear/slot forming 2. Curved area 4.
Sharpening the Blades WARNING 1. A blade that is bent or damaged could break apart and could critically injure you or bystanders. • Always replace a bent or damaged blade with a new blade. • Do not file or create sharp notches in the edges or surfaces of the blade. Use a file to sharpen the cutting edge at both ends of the blade (Figure 48). Note: Maintain the original angle. Note: The blade retains its balance if the same amount of material is removed from both cutting edges.
Adjusting the Blade Brake 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and disconnect the spark-plug wires from the spark plugs. 3. If necessary, adjust the spring-mounting bolts so that the blade-brake pad rubs against both sides of the pulley groove (Figure 50). 4. Adjust the nut at the end of the blade brake rod until there is 3 mm to 5 mm (1/8 to 3/16 inch) between the nut and spacer (Figure 50). 5.
7. Cleaning Place one J-hook end of the spring around the grass deflector (Figure 51). Important: The grass deflector must be able to rotate. Lift the deflector up to the fully-open position and ensure that it rotates into the fully-down position. Cleaning under the Mower Service Interval: Before each use or daily Remove the grass buildup under the mower daily. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2.
Storage E. Important: Do not store fuel containing Cleaning and Storing the Machine 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine and hydraulic system.
Troubleshooting Problem Possible Cause The fuel tank is showing signs of collapsing or the machine is frequently showing signs of running out of fuel. 1. The air-cleaner paper element 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 vibrates abnormally. The cutting height is uneven. The blades do not rotate. Possible Cause Corrective Action 1. The cutting blade(s) is/are bent or unbalanced. 1. Install new cutting blade(s). 2. The blade mounting bolt is loose. 3. The engine mounting bolts are loose. 4. The engine pulley, idler pulley, or blade pulley is loose. 5. The engine pulley is damaged. 6. The blade spindle is bent. 7. The motor mount is loose or worn. 2. Tighten the blade mounting bolt. 3.
Schematics g001471 Electrical Schematic (Rev.
Notes:
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California Proposition 65 Warning Information What is this warning? You may see a product for sale that has a warning label like the following: WARNING: Cancer and Reproductive Harm—www.p65Warnings.ca.gov. What is Prop 65? Prop 65 applies to any company operating in California, selling products in California, or manufacturing products that may be sold in or brought into California.
