Form No. 3364-497 Rev A Commercial Walk-Behind Mower with a Fixed Deck, T-Bar, Gear Drive with 32in, 36in or 48in Cutting Unit Model No. 30672—Serial No. 310000001 and Up Model No. 30674—Serial No. 310000001 and Up Model No. 30678—Serial No. 310000001 and Up To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com.
WARNING CALIFORNIA Proposition 65 Warning The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Figure 1 1. Model and serial number location This spark ignition system complies with Canadian ICES-002. Important: This engine is not equipped with a spark arrester muffler.
Safety Operating the Blade Control Lever (PTO) ............................................................ 14 The Safety Interlock System................................ 15 Driving Forward or Backward............................. 15 Using the Lower Control Bar .............................. 15 Stopping the Machine......................................... 16 Transporting Machines....................................... 16 Adjusting the Flow Baffle ...................................
• Keep pets and bystanders away. • Slow down and use caution when making turns and crossing roads and sidewalks. Stop blades if not mowing. • Be aware of the mower discharge direction and do not point it at anyone. • Do not operate the mower under the influence of alcohol or drugs. • Use care when loading or unloading the machine into or from a trailer or truck. • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.
• Never tamper with safety devices. Check safety systems for proper operation before each use. This product is capable of amputating hands and feet and throwing objects. Always follow all safety instructions to avoid serious injury or death. • Use only genuine replacement parts to ensure that original standards are maintained. This product is designed for cutting and recycling grass or, when equipped with a grass bagger, for catching cut grass.
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 20 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 20 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. 43-8480 95-5537 3. Pull back to disengage 1. Read the Operator’s Manual for instructions on operating the cutting blade 2.
98-3266 99–3943 1. Engine 98-4387 1. Warning—wear hearing protection. 104-8569 98-5130 1. Warning—read the Operator’s Manual for instructions on torquing the blade bolt/nut to 75-80 ft-lb (102-106 N⋅m).
Manufacturer’s Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. 110-2068 1. Read the Operator’s Manual.
Product Overview Figure 4 1. 2. 3. 4. Side discharge Mower deck Recoil starter Gas tank 5. T-bar control 6. Handle 7. Front caster wheel Figure 5 1. Throttle control 2. 3. 4. 5. 6. Controls 7. Parking brake lever-released position Blade control bail 8. Choke Power take off lever (PTO) 9. Ignition switch 10. Upper handle Gear shift lever Upper control bar 11. Lower handle Lower control bar Become familiar with all the controls (Figure 5) before you start the engine and operate the machine.
Upper Control Bar Shift to the desired gear and push forward on the upper control bar and blade control bail to engage forward traction operation and pull back to brake forward movement. Pull back on right side of upper control bar to turn right and left side to turn left. Height 41 inches (104.1 cm) Weight 460 lb (209 kg) 48 inch mowers: Width with deflector down 63–1/2 inches (161.3 cm) Length 72–3/8 inches (183.6 cm) Lower Control Bar Height 41 inches (104.
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. CAUTION Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Always remove the ignition key and set the parking brake when leaving the machine unattended, even if just for a few minutes. Filling the Fuel Tank 1. Shut the engine off and set the parking brake. 2.
7. To start a warm engine, move the throttle control to the fast position. 5. Pull wire off spark plug(s) to prevent possibility of accidental starting before storing or performing maintenance on the machine. 6. Close the fuel shut off valve before storing or transporting the machine. 8. Pull the choke knob if the engine is cold (Figure 8). Note: A warm or hot engine usually does not require any choking.
The Safety Interlock System 2. Release the parking brake; refer to Releasing the Parking Brake. 3. Slowly press on the upper control bar to move forward (Figure 10). CAUTION 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.
Driving Forward Up a Curb Note: Both drive wheels should contact the curb and caster wheels straight. 1. Disengage the mower blades. 4. At the same time engage lower control bar and lift up on the lower handle (Figure 10 and Figure 12). 2. Select first gear to drive the machine. 3. Drive machine until the castor wheels contact curb (Figure 11). Note: Lifting up on the lower handle will assist driving the machine up a curb and not spin the drive wheels. 4.
To transport the machine: Positioning the Flow Baffle 1. Stop the engine, remove the key, set the brake, and close the fuel valve. The following figures are only recommendations for use. Adjustments will vary by grass type, moisture content, and height of grass. 2. Securely fasten the machine to the trailer or truck with straps, chains, cable, or ropes. Note: If the engine power draws down and the mower ground speed is the same, open up the baffle. 3.
Position A This is the full rear position. The suggested use for this position is a follows (Figure 14). • Use for short, light grass mowing conditions. • Use in dry conditions. • For smaller grass clippings. • Propels grass clippings farther away from the mower. Figure 15 Position C This is the full open position. The suggested use for this position is as follows (Figure 16). • Use in tall, dense grass mowing conditions. • Use in wet conditions. Figure 14 • Lowers the engine power consumption.
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. If the grass deflector is ever damaged, replace it immediately. • Never put your hands or feet under the mower.
Figure 18 1. Axle pivot bolt 2. Axle adjustment bolt 4. Place a jack under the rear center of the engine frame. Raise the back end of the engine frame up enough to remove the front 2 axle adjustment bolts (Figure 18). Note: Use jack stands to support the machine. 5. Raise or lower the engine frame with the jack so that you can install the front 2 axle adjustment bolts in the desired hole location (Figure 18). Note: Use a tapered punch to help align the holes. 6. Tighten all 4 bolts and lower the mower. 7.
2. Remove the latch pin, slide the caster from the support, and change the spacers (Figure 19). 4. Pivot handle to desired operating position and install lower flange bolts (3/8 x 1 inch)and flange nuts into mounting holes. Tighten all flange bolts. 3. Install the caster in the support and insert the v pin (Figure 19). 5. Thread rod fitting up or down on rod until proper position is attained and install into fitting to idler bracket with clevis pin, washer and hairpin cotter.
Height of Cut Chart Number of spacers below caster Number of 1/4 inch blade spacers below spindle 1/2 inch (13mm) 3/16 inch (5 mm) 4 3 2 1 0 A 0 0 1 inch (26 mm) 1–1/4 inch (32 mm) 1–1/2 inch (38 mm) 1–3/4 inch (45 mm) 2 inch (51 mm) A 0 1 1–1/8 inch (29 mm) 1–3/8 inch (35 mm) 1–5/8 inch (41 mm) 1–7/8 inch (48 mm) 2–1/8 inch (54 mm) A 1 0 1–3/8 inch (35 mm) 1–5/8 inch (41 mm) 1–7/8 inch (48 mm) 2–1/8 inch (54 mm) 2–3/8 inch (60 mm) B 0 1 1–3/8 inch (35 mm) 1–5/8 inch (41
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 8 hours • Change the engine oil. • Check the mower belt tension. After the first 25 hours • Check the mower belt tension. Before each use or daily • • • • • • • Check the safety system. Grease the caster wheels and caster pivot. Check the engine oil level. Clean the air intake screen.
4. Connect a grease gun to the fitting. Pump grease into the fittings until grease begins to ooze out of the bearings. 5. Wipe up any excess grease. Lubricating the Caster and Wheel Bearings 1. Lubricate the front wheel bearings and front spindles (Figure 22). 2. Lubricate the drive wheel bearings (Figure 22).
Engine Maintenance Servicing the Air Cleaner Service Interval/Specification Service Interval: Every 25 hours—Clean foam air cleaner element. Every 50 hours—Check the paper air cleaner element. Every 200 hours—Replace the paper air cleaner element. Note: Service the air cleaner more frequently (every few operating hours) if the operating conditions are extremely dusty or sandy. Figure 26 1. Cover 2. Hose clamp 3. Paper element 4. Foam element Important: Do not oil the foam or paper element.
Servicing the Engine Oil Service Interval/Specification Service Interval: Before each use or daily—Check the engine oil level. After the first 8 hours—Change the engine oil. Every 100 hours—Change the engine oil. Figure 28 1. Oil dipstick Every 200 hours—Change the oil filter. 2. Filler tube 5. Unscrew the oil dipstick and wipe the end clean (Figure 28). Note: Change the oil more frequently when the operating conditions are extremely dusty or sandy. 6.
4. Install the replacement oil filter to the filter adapter, turn the oil filter clockwise until the rubber gasket contacts the filter adapter, then tighten the filter an additional 3/4 turn (Figure 30). 5. Fill the crankcase with the proper type of new oil; refer to Servicing the Engine Oil. 6. Run the engine for about 3 minutes, stop 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.
Installing the Spark Plugs 1. Install the spark plugs and the metal washer. Ensure that the air gap is set correctly. 2. Tighten the spark plugs to 16 ft-lb (22 N-m). 3. Connect the wires to the spark plugs (Figure 32). 1 Figure 31 1. Spark-plug wire/spark plug 4. Clean around the spark plugs to prevent dirt from falling into the engine and potentially causing damage. 5. Remove the spark plugs and the metal washers. Checking the Spark Plugs 1. Look at the center of the spark plugs (Figure 32).
Fuel System Maintenance Servicing the Fuel Tank 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. Figure 33 • Drain gasoline from the fuel tank when the engine is cold. Do this outdoors in an open area. Wipe up any gasoline that spills. 1. Fuel shut-off valve • Never smoke when draining gasoline, and stay away from an open flame or where a spark may ignite the gasoline fumes. 2.
Drive System Maintenance Checking the Tire Pressure Check the pressure at the valve stem after every 50 operating hours or monthly, whichever occurs first (Figure 35). Maintain the air pressure in the rear tires at 12-14 psi (83-97 kPa). Uneven tire pressure can cause an uneven cut. Note: The front tires are semi-pneumatic tires and do not require air pressure maintenance. Figure 34 1. Hose clamp 2. Fuel line 3. Filter 5. Remove the filter from the fuel lines. 6.
Cooling System Maintenance Brake Maintenance Cleaning the Air Intake Screen Before each use, check brakes on both a level surface and slope. Servicing the Brakes Before each use remove any build-up of grass, dirt or other debris from the cylinder and cylinder head cooling fins, air intake screen on flywheel end, and carburetor-governor levers and linkage. This will help insure adequate cooling and correct engine speed and will reduce the possibility of overheating and mechanical damage to the engine.
Belt Maintenance Checking the Belts Service Interval: Every 50 hours/Monthly (whichever comes first) Check belts for cracks, frayed edges, burn marks, wear, signs of overheating or any other damage. Replace damaged belts. Replacing the Traction Drive Belt Figure 37 1. Brake rod 2. Wing nut 1. Remove hairpin cotter securing brake rod to brake arm to relax belt idler tension (Figure 38). 2. Remove bottom and loosen top bolts of shield to rotate for belt clearance (Figure 38). 3.
Note: The proper mower belt tension is 10-15 lbf. (44-67 N) with the belt deflected 1/2 inch (13 mm) halfway between the pulleys (Figure 43 or Figure 44). 4. Remove the mower belt; refer to Replacing the Mower Belt (Figure 39). 8. Engage the blade control (PTO) lever. 9. Check the clearance between the bell crank and the transmission output shaft (Figure 40). Figure 39 1. Idler pulley in slot 2. Traction belt 3. Mower belt 4. Belt guide 5. 3/4 inch (19 mm) 6. Mower belt Figure 40 5.
Adjusting the Mower Belt Tension Adjusting the Tension for 32in and 36in Mower Decks Service Interval: After the first 8 hours—Check the mower belt tension. After the first 25 hours—Check the mower belt tension. Every 50 hours—Check the mower belt tension. Important: The brake needs to be adjusted when the belt tension or the brake linkage is adjusted. Figure 41 32in and 36in Mower Deck Important: The belt must be tight enough to not slip during heavy loads while cutting grass.
Figure 43 32in and 36in Mower Deck 1. Mower belt with 1/2 inch (13mm) deflection 2. Idler pulley Figure 44 48in Mower Deck 1. Mower belt with 1/2 inch (13mm) deflection 6. Tighten the locknut on the turnbuckle. 7. Check the blade brake adjustment; refer to Adjusting the Blade Brake. 2. Idler pulley Note: The eyebolt threads on both ends of the turnbuckle should be engaged a minimum of 5/16 inch (8 mm).
Adjusting the PTO Engagement Linkage positioned to the middle or front hole (Figure 46). Use the hole that will give the correct adjustment. 7. When the idler pulley is moved the belt guide must be moved. Move the belt guide to the front position (Figure 46). The PTO engagement linkage adjustment is located beneath the front left hand corner of the engine deck. 1. Disengage the blade control (PTO) lever and set the parking brakes. 2.
Figure 49 1. 2. 3. 4. Yoke Nut Rear assist arm stop Front assist arm stop 5. Assist arm link 6. Assist arm 7. Turnbuckle Figure 50 1. Bellcrank 2. Bolts and nuts 8. To adjust the assist arm link, remove the hairpin cotter pin from the assist arm (Figure 49). 9. Loosen the nut against the yoke (Figure 48). 10. Remove the assist arm link from the assist arm and rotate the link to adjust the length. 11. Install the assist arm link into the assist arm and secure it with the hairpin cotter pin (Figure 49).
Mower Deck Maintenance Checking for Bent Blades 1. Rotate the blades until the ends face forward and backward (Figure 52). Servicing the Cutting Blades To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, you may want to keep extra blades on hand. WARNING A worn or damaged blade can break, and a piece of the blade could be thrown into the operator’s or bystander’s area, resulting in serious personal injury or death.
Sharpening the Blades WARNING 1. Use a file to sharpen the cutting edge at both ends of the blade (Figure 56). Maintain the original angle. The blade retains its balance if the same amount of material is removed from both cutting edges. A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders. • Always replace bent or damaged blade with a new blade. • Never file or create sharp notches in the edges or surfaces of blade.
4. Adjust the nut at the end of the blade brake rod until there is 1/8-3/16 inch (3 mm -5 mm) between the nut and spacer (Figure 58). 5. Engage the blades. Ensure the blade brake pad no longer contacts the pulley groove. Figure 59 1. Bolt 2. Spacer 3. Locknut Figure 58 1. Spring mounting bolts 2. Blade brake pad 3. 1/8-3/16 inch (3mm-5mm) 4. Spring Replacing the Grass Deflector 5. Spring installed 6. Grass Deflector 7. L end of spring, place behind deck edge before installing bolt 8.
Storage 11. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to off. Remove the key. 12. Store the machine in a clean, dry garage or storage area. Remove the key from the ignition switch and keep it in a memorable place. Cover the machine to protect it and keep it clean. 2.
Troubleshooting Problem Engine will not start, starts hard, or fails to keep running. Possible Cause 1. Fuel tank is empty. 1. Fill the fuel tank with gasoline. 2. Fuel shut off valve is closed. 3. Choke is not on. 2. Open the fuel shut off valve. 3. Move the throttle lever to choke position. 4. Clean or replace the air cleaner element. 5. Install the wire on spark plug. 4. Air cleaner is dirty. 5. Spark plug wire is loose or disconnected. 6. Spark plug is pitted, fouled, or the gap is incorrect. 7.
Problem Blades do not rotate. Possible Cause Corrective Action 1. Mower deck belt is worn or loose. 1. Check the belt tension. 2. Mower deck belt is broken. 3. Mower deck belt is off pulley. 2. Install a new deck belt. 3. Inspect the belt and replace if damaged. Check the pulleys and idlers and adjust the belt tension. 4. Replace the spring. 4. Broken or missing idler spring.
Schematics Electrical Schematic (Rev.
Notes: 45
Notes: 46
Notes: 47
The Toro Total Coverage Warranty A Limited Warranty (see warranty periods below) Conditions and Products Covered 3. 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.
