Form No. 3404-698 Rev B MM-858H-P Mortar Mixer Model No. 68021HD—Serial No. 316000001 and Up Register at www.Toro.com.
You may contact Toro directly at www.Toro.com for product safety and operation training materials, 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 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.
Contents This manual uses 2 words to highlight information. Important calls attention to special mechanical information and Note emphasizes general information worthy of special attention. Safety ........................................................................... 4 Safe Operating Practices........................................... 4 Safety and Instructional Decals ................................. 7 Setup ............................................................................
Safety • Never let children or untrained people operate or service the equipment. Local regulations may restrict the age of the operator. Improperly using or maintaining the machine can result in injury. 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.
Preparation – Ensure that the lug nuts are tight and torqued properly. Become familiar with the safe operation of the equipment, operator controls, and safety signs. • Use only accessories and attachments approved by the manufacturer.
Maintenance and Storage • Before performing maintenance, do the following: – Park the machine on level ground. – Shut off the engine. Wait for all movement to stop before adjusting, cleaning, or repairing. – Let the engine cool before performing maintenance or storing. – Disengage all power and operation controls. • Never lubricate, service, repair, or adjust the machine while it is running. • Keep equipment materials clear from the muffler and engine to help prevent fires.
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. 117-2718 130-8322 1. Only use fuel with an alcohol content by volume under 10%. 2. Read the Operator's Manual for more information on fuel. 125-8175 1. Read the Operator’s Manual for information on greasing the machine. 125-8216 1. Read the Operator’s Manual for information on how to tow the machine. 2.
125-4939 1. Warning—read the Operator’s Manual. 4. Toxic gas inhalation hazard—Don’t run the engine in an enclosed space. 2. Hand and arm entanglement at the belt drive; crushing hazard of hand; entanglement hazard of hand at the shaft—keep hands away from moving parts; keep all guards and shields in place. 5. Explosion hazard—shut off the engine and keep away from flames when refueling. 3.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 Description Qty. Dump handle Bolt Nut 1 2 2 Install the dump handle. Tow pole kit (sold separately) 1 Install the tow pole. Safety chain Connecting link 1 2 Install the safety chain. 3. Insert the 2 bolts through the bolt holes in the dump handle and the drum (Figure 3). 1 4. Install a nut onto each bolt, and tighten them by hand to prevent cross-threading. Installing the Dump Handle 5.
2 3 Installing the Tow Pole Installing the Safety Chain Parts needed for this procedure: Parts needed for this procedure: 1 Tow pole kit (sold separately) 1 Safety chain 2 Connecting link Procedure Procedure Note: The tow pole is purchased separately and includes the nut and bolt needed for installation. Form a hook on the end of a bendable piece of rod or stiff wire, (not included), and install the safety chain as shown in Figure 5.
Controls Product Overview Become familiar with all the controls before you start the engine and operate the machine. Clutch Lever The clutch lever engages and disengages engine power to the paddles (Figure 7). 1 Figure 6 1. Rear cowl 2. Front cowl 6. Clutch lever 7. Tow pole 11. Grate lift arm 12. Drum 3. Grate 8. Front post 13. Chute 4. Bag splitter 9. Safety-chain keyhole 14. Cowl latch 5. Dump handle G019875 Figure 7 Belt-drive models 1. Clutch lever 10.
Drum Latch Fuel Valve The drum latch secures the drum to the mix position (upright) for mixing operations and when transporting the machine. The fuel valve (Figure 10) is located underneath the choke lever. Move the lever for the fuel valve to the ON position before attempting to start the engine. When you have finished mixing, shut off the engine and move the fuel valve lever to the OFF position. 1 3 2 1 G019877 Figure 8 1.
Operation Preparing to Tow the Machine OFF ON OFF ON Important: Ensure that your tow vehicle has towing capacity for the weight of the machine. Important: Use a Class 2 or larger receiver. 1 2 Note: Ensure that your tow vehicle has the appropriate hitch to tow the machine; options include a 50 mm (2 inch) ball hitch or a pintle hitch. G021 103 Figure 11 1. Off position 2.
Checking the Tires and Wheels 3. Ensure that the wheel lug nuts are torqued to 108 to 122 N∙m (80 to 90 ft-lb). Service Interval: Before each use or daily—Inspect the tires and wheels. Note: Check the torque of the wheel lug nuts initially and after towing. The DOT tire information is located on the side of each tire. This information gives load and speed ratings. Replacement tires should have the same or better ratings. For more information go to http://www.nhtsa.gov/Vehicle+Safety/Tires.
Hitching a Machine with a Stamped Ball Coupler Hitching a Machine with a Forged Ball Coupler 1. Apply chassis grease to the socket of the coupler and the area of the clamp that contacts the ball. 1. Apply removable thread-locking compound to the threads of the coupler bolt to prevent the coupler handle from coming loose. 2. Oil the pivot points and sliding surfaces of the coupler with SAE 30 motor oil. Important: Apply thread-locking compound as needed in the future. 3.
Hitching a Machine with a Pintle Hitch Coupler Connecting the Safety Chains to the Tow Vehicle 1. Hitch the machine as shown in Figure 18. 1. Pull the safety chain through the slots in the keyholes, so that the lengths on each side are equal. 2. Cross both lengths of chain under the tow pole. Note: Crossing the chains decreases the chances of the front of the machine dropping to the ground if the hitch does not hold the connection. 2 1 Figure 18 3 G021 177 Figure 19 2.
1 2. Lift the machine until the tires are off the ground. 2 3. Use a jack stand at each support point on the rear frame extension (Figure 21). 3 4 G019927 Figure 20 1. Connecting link 3. Chain link 2. Safety chain mounting point on tow vehicle 4. Chain 1 G020019 Figure 21 1. Support point (2) Extending the Axle 4. Remove the bolts and nuts that secure the inner axle to the outer axle (Figure 22). WARNING 1 The machine is not stable towed with the axle in the narrow position.
Towing the Machine Preparing to Use the Machine • Review all of the safety decals on the machine. • Use a hard-hat, hearing protection, a shirt with long WARNING Towing the machine at high speed increases the risk of a hitch malfunction and tire failure. Higher speeds also increase the momentum of the machine and braking distance. If the machine becomes detached from the tow vehicle at high speed, it could cause damage to property, or injury or death to bystanders.
Closing the Cowl 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. • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any gasoline that spills. • Never fill the fuel tank inside an enclosed trailer. • Do not fill the fuel tank completely full. Add fuel to the fuel tank until the level is 6 to 13 mm (1/4 to 1/2 inch) below the bottom of the filler neck.
Filling the Fuel Tank WARNING Capacity: 5.3 L (1.4 US gallons) Fuel is harmful or fatal if swallowed. Long-term exposure to vapors can cause serious injury and illness. 1. Park the machine on a level surface, shut off the engine, and allow the engine to cool. • Avoid prolonged breathing of vapors. 2. Clean around the fuel cap and remove it (Figure 25). • Keep face away from nozzle and fuel tank or conditioner bottle opening. 1 • Avoid contact with skin; wash off spills with soap and water.
Starting and Shutting Off the Engine 1 Starting the Engine 1. On the engine, move the throttle lever away from the MIN position, 1/3 of the way toward the MAX position (Figure 27). G020679 Figure 26 1 1. Maximum fuel level 2 4. Install the fuel cap securely (Figure 25). 3 5. Wipe up any fuel that may have spilled. G019815 Figure 27 1. Choke lever 2.
Controlling the Paddles DANGER This machine is capable of amputating hands. • Stay in the operator’s position while the machine is running. • Keep all bystanders a safe distance from the machine. • Stop the machine immediately if any people or animals enter the work area. G019747 • Never place any part of your body into a position that causes an unsafe operating condition. Figure 28 Important: Ensure that the paddles do not turn when clutch is in the OFF position.
Mixing the Material Mixing a Batch of Material in the Machine DANGER 1. Ensure that there is no old, loose material in the drum that can contaminate the batch of material; refer to Cleaning the Drum (page 24) and Dumping the Drum (page 24), then return the drum to the upright position. Eye and skin contact with concrete materials and breathing the dust involved is hazardous to your health. Note: Ensure that the drum is in the mix position (upright) and the drum latch is engaged.
Using the Drum Note: This step cleans the paddles and drum between batches and prevents dried material from forming and contaminating the next batch of material. DANGER Contact with the mixing paddles could cause damage or injury. Cleaning the Drum Never put your hands inside the drum while the engine is running. Important: Do not strike on the drum with a shovel, hammer, or any other device to loosen any accumulated dried materials. Dumping the Drum 1.
4. Loosen the nuts and bolts that secure the paddle blades to the paddles (Figure 33). 6. Install the grate with the nuts and bolts that you removed in step 3 and tighten the nuts and bolts until they are secure. Note: If necessary, tip the drum to the dump position to access the paddles. 1 2 G022162 Figure 33 1. Paddle blade 2. Nut and bolt 5.
Maintenance Important: Before performing any maintenance procedures, first shut off the engine, wait 5 minutes to allow all moving parts to come to a complete stop and cool, and disconnect the spark-plug wire. Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the first 25 hours • Change the engine oil. • Inspect the belts and adjust as necessary. Before each use or daily • Inspect the tires and wheels. • Inspect the air-cleaner elements.
Premaintenance Procedures Preparing the Machine for Maintenance 1. Park the machine on a level surface. 2. Remove the machine from the tow vehicle. G020752 3. Secure the machine from movement. Figure 36 4. Open the rear cowl; refer to Opening the Cowl (page 18). 3. To remove the divider plate, lift it upward and rotate it counterclockwise so that it clears various engine components. 5. Ensure that the engine and muffler are cool. 6. Disconnect the spark-plug wire; refer to Figure 35.
Lubrication 2. Pump grease into each fitting as follows: • For the pillow-block bearings, pump 1 shot of grease into each fitting (Figure 38). Lubricating the Bearings and Seals • For the trunnions, pump several shots of grease into each fitting until it starts to ooze out of the bearing housing (Figure 38). Service Interval: After each use—Lubricate the trunnions. Important: Pump grease in slowly and carefully to prevent damage to the bearing seals. Monthly—Lubricate the pillow-block bearings.
Engine Maintenance 1 Servicing the Air Cleaner 2 Service Interval: Before each use or daily—Inspect the air-cleaner elements. Every 50 hours—Clean the air-cleaner elements. Clean them more frequently in dusty operating conditions. 3 Every 300 hours/Yearly (whichever comes first)—Replace the paper air-cleaner element. Replace it more frequently in dusty operating conditions. 4 Important: Do not operate the engine without the air-filter assembly; extreme engine damage will occur. 1.
Checking the Engine-Oil Level 10. Dip the foam element in clean engine oil, then squeeze out the excess oil. Service Interval: Before each use or daily Note: Excess oil in the foam element restricts the air flow through the element and may reach the paper filter and clog it. 1. Place the machine on a flat, level surface, and shut off the engine. 2. Allow the engine to cool. 11. Wipe dirt from the base and the cover with a moist rag. 3. Clean around the dipstick.
Changing the Engine Oil 1 2 3 Service Interval: After the first 25 hours Every 100 hours WARNING Oil may be hot after the engine has been run, and contact with hot oil can cause severe personal injury. Avoid contacting the hot engine oil when you drain it. 4 1. Shut off the engine and wait for all moving parts to stop. 2. Disconnect the wire from the spark plug; refer to Disconnecting the Spark-Plug Wire (page 27). 3. Place a drain pan under the oil-drain hole of the engine (Figure 42).
Checking the Spark Plug Important: Do not clean the spark plug. Always replace the spark plug when it has: a black coating, worn electrodes, and oily film, or cracks. Note: If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means that the air cleaner is dirty. Set the gap to 0.7 to 0.8 mm (0.028 to 0.031 inch). A Figure 44 1. Spark plug B 2. Wire 4. Clean around the spark plug. 5.
Servicing the Spark Arrester 6. Use a brush to carefully remove carbon deposits from the spark-arrester screen (Figure 48). Cleaning the Spark Arrester Note: Replace the spark arrester if it has breaks or holes. Service Interval: Every 100 hours Note: A spark arrester is available as an option. If you require a spark arrester, contact your Authorized Toro Service Dealer. Genuine Toro spark arresters are approved by the USDA Forestry Service.
1 3 2 4 5 G0201 19 Figure 49 1. Anchor bracket 4. Spring-removal tool (spring removed) 2. Engine deck 5. Spring (spring removed) 3. Spring-removal tool (Toro Part No. 92-5771) G020121 Figure 51 7. Remove the bolt and nut that secure the rear bracket for the engine deck hinge to the frame of the machine (Figure 50). 10. Remove the engine and engine deck from the machine (Figure 51). Installing the Engine 1. Align the engine and engine deck to the rear frame of the machine.
Fuel System Maintenance 10. Move the lever of the fuel valve to the ON position (all the way to the right) and check for leaks. If it leaks, replace the O-ring. Draining the Fuel Tank Cleaning the Fuel-Sediment Cup 1. Remove the engine; refer to Removing the Engine (page 33). Service Interval: Every 100 hours/Every 6 months (whichever comes first)—Clean the fuel-sediment cup. Yearly or before storage—Clean the fuel-sediment cup. 2. Remove the fuel cap by rotating it counterclockwise (Figure 53).
Belt Maintenance A. Move the clutch lever to the OFF position. B. Loosen the nuts and bolts that secure the engine to the engine deck (Figure 56). Servicing the Belts—Belt-drive Models Inspecting the Belts 1 2 3 Service Interval: After the first 25 hours—Inspect the belts and adjust as necessary. Every 40 hours—Inspect the belts and adjust as necessary. 1. Remove the divider plate; refer to Removing the Divider Plate (page 27). 4 3 2. Move the clutch lever to the OFF position. 3.
E. If needed, pivot the engine on the engine deck until the engine pulley and the idler pulley are aligned to the straightedge (Figure 57). F. Tighten the nuts and bolts that secure the engine to the engine deck to a torque of 18 N∙m (13 ft-lb). G. Check the air gap between the engine deck and the roller on the clutch. If the air gap is not within the specified range, repeat step 3 until the air gap measurement is within the specified range. 2 1 3 4 H.
Adjusting the Belt Guide Checking the Clutch Operation Note: To access the belt guide, remove the divider plate; refer to Removing the Divider Plate (page 27). Service Interval: Every 40 hours—Check the clutch operation Guide air gap: 2.5 to 4.0 mm (3/32 to 5/32 inch) Important: The paddles must not rotate in an empty drum when the clutch lever is in the OFF position. 1. Ensure that the clutch lever is in the ON position. 2.
Aligning the Pulleys Cleaning 1. Remove the divider plate; refer to Removing the Divider Plate (page 27). Cleaning the Machine 2. Place a straightedge across the face of the engine pulley and the idler pulley (Figure 61). 1 Regular cleaning and washing with mild detergent and water increases the life span of the machine. Clean the machine after each use before the dirt hardens. 2 Remove dirt and grime from the external parts of the entire machine, especially the engine.
Storage 9. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. Storing the Machine 10. Paint all scratched or bare metal surfaces with paint available from your Authorized Toro Dealer. For storage over 30 days, prepare the machine as follows: 11. Store the machine in a clean, dry garage or storage area. 1. Remove dirt and grime from the external parts of the entire machine, especially the engine.
Troubleshooting Problem The engine does not start. Possible Cause 1. The fuel-valve lever is in the OFF position. 1. Move the fuel-valve lever to the ON position. 2. The choke is closed 2. Open the choke when starting a hot engine. 3. Close the choke when starting a cold engine. 4. Rotate the switch to the ON position. 3. The choke is open. 4. The engine On/Off switch is in the OFF position. 5. The engine oil level is low (engines with the oil-level switch). 6. The fuel tank is empty. 7.
Notes: 42
Notes: 43
The Toro Warranty A 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 warrant your Toro Concrete, Masonry, and Compaction Equipment Products listed below to be free from defects in materials or workmanship. This warranty covers the cost of parts and labor, but you must pay transportation costs. for that part.
