Form No. 3378-860 Rev A MM-Series Mortar Mixer Model No. 68013—Serial No. 313000001 and Up Model No. 68014—Serial No. 313000001 and Up Model No. 68016—Serial No. 313000001 and Up Model No. 68017—Serial No. 313000001 and Up Model No. 68020—Serial No. 313000001 and Up Model No. 68021—Serial No. 313000001 and Up Model No. 68024—Serial No. 313000001 and Up G019552 Register at www.Toro.com.
You may contact Toro directly at www.Toro.com for product and accessory information, help finding a dealer, or to register your product. WARNING CALIFORNIA Proposition 65 Warning Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Write the numbers in the space provided.
Servicing the Reduction Case—Belt-drive Models ..............................................................36 Servicing the Gear Case—Gear-case Model................38 Belt Maintenance ......................................................39 Servicing the Belts—Belt-drive Models......................39 Replacing the Belts—Belt-drive Models.....................40 Aligning the Pulleys—Belt-drive Models....................42 Cleaning ...................................................................
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. – Stop 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. Clean up any oil or fuel spillage.
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 125–8175 1. Read the Operator’s Manual for information on greasing the machine. 125–4939 4. Toxic gas inhalation hazard—Don’t run the engine in an enclosed space. 2.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 Description Qty. Use 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. 1 Installing the Dump Handle Parts needed for this procedure: 1 Dump handle 2 Bolt 2 Nut G022150 Installing the Dump Handle to the Drum Figure 4 Models 68014, 68017, 68021 1.
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) Installing the Tow Pole to the Machine 50 mm (2 inch) ball—stamped 78.7 cm (31 inches) or 127 cm (50 inches) 50 mm (2 inch) ball—forged 78.7 cm (31 inches) or 127 cm (50 inches) Pintle 78.7 cm (31 inches) or 127 cm (50 inches) 2 Connecting link 1.
Product Overview 3 4 3 2 1 2 1 4 5 5 14 6 6 13 7 16 8 15 9 10 14 13 12 11 12 11 10 9 G019773 Figure 8 Right side (models 68013, 68014, 68016, 68017, 68020, and 68021) 1. Rear cowl 2. Front cowl 3. Grate 7. Clutch lever 8. Drum latch 9. Front post 4. Bag splitter 10. Tow pole 5. Dump handle 11. Safety-chain keyhole 6. Grate lift arm 12. Drum 12 13. Chute 14. Axle 15. Wheel assembly 16. Cowl latch 13 1 11 10 2 3 4 9 8 7 6 5 G022179 Figure 9 Right side (model 68024) 1.
Controls Drum Latch Become familiar with all the controls before you start the engine and operate the machine. The drum latch secures the drum to the mix position (upright) for mixing operations and when transporting the machine. Clutch Lever The clutch lever engages and disengages engine power to the paddles. • Belt-drive models (models 68013, 68014, 68016, 68017, 68020, and 68021) 1 G019877 Figure 13 1.
Engine Controls Choke Lever 5 Use the choke lever (Figure 16) to start a cold engine. Before pulling the recoil-start handle, move the choke lever to the closed position. Once the engine is running, move the choke lever to the open position. Do not use the choke if the engine is already warmed up or the air temperature is high. 4 Throttle Lever 3 The throttle lever (Figure 16) controls the speed (rpm) of the engine. It is located next to the choke lever.
Specifications Note: Specifications and design are subject to change without notice. Machine Specifications Model 68013 68014 68016 68017 68020 68021 68024 Batch Capacity 0.17 cubic m (6.0 cubic ft) 0.17 cubic m (6.0 cubic ft) 0.17 cubic m (6.0 cubic ft) 0.17 cubic m (6.0 cubic ft) 0.23 cubic m (8.0 cubic ft) 0.23 cubic m (8.0 cubic ft) 0.34 cubic m (12.0 cubic ft) Total Volume 0.20 cubic m (6.9 cubic ft) 0.20 cubic m (6.9 cubic ft) 0.20 cubic m (6.9 cubic ft) 0.20 cubic m (6.
Checking the Tires and Wheels the appropriate air pressure for the tires as installed at the factory. Service Interval: Before each use or daily—Inspect the tires and wheels. Important: Always check the information on the actual tires for the correct air pressure requirement. WARNING Important: The most common cause of tire trouble is under-inflation. Maintain full air pressure.
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. Oil the pivot points and sliding surfaces of the coupler with SAE 30 motor oil. 1. Apply removable thread-locking compound to the threads of the coupler bolt to prevent the coupler handle from coming loose (Figure 23). Important: Apply thread-locking compound as needed in the future. 2.
Hitching a Machine with a Pintle Hitch Tow Pole 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. 1. Remove the pin from the pintle hitch and open it (Figure 24). 2 1 3 G021 177 Figure 25 1. Connecting links 3. Chain crossed under tow pole 2. Keyholes in front post 3.
Extending the Axle—Belt-drive Models Models 68013, 68014, 68016, 68017, 68020, and 68021 WARNING The machine is not stable when towing it with the axle in the narrow position. Tow the machine with the axle in the wide position. Important: Adjust the axle to the narrow position only to move the machine through a narrow access point, such as the gate of a fence or the doorway of a building. 1 G020019 Figure 27 1. Support point (2) Preparing to Change the Axle Width 1.
Towing the Machine 4. Ensure that the drum is in the mix position (upright). WARNING 5. Ensure that the drum latch is engaged and that the drum does not rotate toward the dump position. 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.
2. At the back of the machine, grasp the ring of the latch and pull it on to the latch anchor on the rear cowl. DANGER In certain conditions during fueling, static electricity can be released causing a spark which can ignite the fuel vapors. A fire or explosion from fuel can burn you and others and can damage property. 3. At the side of the machine, grasp the ring of the latch and pull it onto the latch anchor on the rear cowl. 4. Repeat step 3 on the opposite side of the machine (Figure 29).
1 Add the correct amount of fuel stabilizer/conditioner to the fuel, and follow the directions of the manufacturer. Note: 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 Model(s) Fuel tank capacity 68013 and 68014 3.1 L (0.82 US gallons) 68016, 68017, 68020, 68021 5.3 L (1.40 US gallons) 68024 6.1 L (1.61 US gallons) 1.
Starting and Stopping the Engine 30 5W - 30 / 10W - 30 0 20 40 -20 -10 0 60 10 80 20 30 Starting the Engine 100 F o 1. On the engine, move the throttle lever away from the Min position, 1/3 of the way toward the Max position (Figure 34); refer to Throttle Lever (page 12). 40 C o g013375 Figure 32 1. Place the machine on a flat, level surface, and stop the engine. 2. Allow the engine to cool. 3. Clean around the oil dipstick. 4.
Important: Ensure that the paddles do not turn when clutch is in the Off position. Use the clutch lever to control the power transmission to the paddles of the machine. Controlling the Paddles—Belt-drive Models Models 68013, 68014, 68016, 68017, 68020, and 68021 only G019747 Figure 35 Note: If the choke lever is set to the Closed position to start the engine, gradually move the choke lever back toward the Open position as the engine warms up.
Controlling the Paddles—Gear-case Model Mixing a Batch of Material in the Machine 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. Model 68024 only Note: Ensure that the drum is in the mix position (upright) and the drum latch is engaged. 2. Move the clutch lever to the Off position; refer to Controlling the Paddles (page 22). 3.
Note: Allow the machine to completely discharge the contents of the drum. 8. Release the drum latch and dump the drum; refer to Dumping the Drum (page 24). 5. Rotate the dump handle clockwise until the drum latch locks the drum in the upright position (Figure 39). Using the Drum 6. After discharging a batch of material, clean the drum; refer to Cleaning the Drum (page 24). DANGER Contact with the mixing paddles could cause damage or injury.
G022159 Figure 40 Models 68013, 68016, 68020 G022163 Figure 42 Model 68024 G022161 Figure 41 Models 68014, 68017, 68021 25
4. Loosen the nuts and bolts that secure the paddle blades to the paddles (Figure 43, Figure 44, or Figure 45). 1 Note: If necessary, tip the drum to the dump position to access the paddles. 2 1 2 G022164 Figure 45 Model 68024 1. Paddle blade 2. Nut and bolt G022160 Figure 43 Models 68013, 68016, 68020 1. Paddle blade 5. Move the paddle blades to the preferred position, and tighten the nuts and bolts to secure the blades to the paddles. 2.
Maintenance Important: Before performing any maintenance procedures, first stop 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 20 hours • Change the reduction-case oil (Models 68013 and 68014 only). After the first 25 hours • Change the engine oil. • Check the gear-case clutch (Model 68024 only).
Premaintenance Procedures Removing the Divider Plate 1. Unlatch and open the cowl; refer to Opening the Cowl (page 18). 2. Use a wrench to remove the 4 bolts that secure the divider plate to the front cowl. Preparing the Machine for Maintenance Note: Keep the bolts for installing the divider plate. 1. Park the machine on a level surface. 2. Remove the machine from the tow vehicle. 3. Chock the tires. 4. Open the rear cowl; refer to Opening the Cowl (page 18). 5.
Lubrication 2. Pump grease into each fitting as follows: • For the pillow-block bearings, pump 1 shot of grease into each fitting (Figure 49). 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 49). Service Interval: After each use—Lubricate the trunnions. Monthly—Lubricate the pillow-block bearings. Important: Pump grease in slowly and carefully to prevent damage to the bearing seals.
Engine Maintenance 4. Remove the cover. Note: Be careful to prevent dirt and debris from falling into the base. Servicing the Air Cleaner 5. Remove the foam and paper elements from the base (Figure 50). 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. Every 300 hours/Yearly (whichever comes first)—Replace the paper air-cleaner element.
Note: Use SAE 10W-30 for general use. You can use the other viscosities shown in the chart when the average temperature in your area is within the indicated range (Figure 51). 30 5W - 30 / 10W - 30 0 20 40 -20 -10 0 60 10 80 20 30 100 F o 40 C o g013375 Figure 51 Draining the Engine Oil 1 2 3 G019750 Figure 52 WARNING 1. Oil drain plug Oil may be hot after the engine has been run, and contact with hot oil can cause severe personal injury. 3. Oil drain pan 2.
1 2 3 4 Figure 54 1. Spark plug 2. Wire 4. Clean around the spark plug. 5. Rotate the spark plug counterclockwise using a 13/16 inch (21 mm) spark-plug wrench to remove the plug and the sealing washer (Figure 55). G019746 Figure 53 1. Oil fill hole 3. Oil-level upper limit 2. Dipstick 4. Oil-level lower limit 2. Replace and secure the dipstick. 3. Wipe up any spilled oil. Servicing the Spark Plug Service Interval: Every 100 hours/Every 6 months (whichever comes first)—Check the spark plug.
1 2 3 Servicing the Spark Arrester 4 Cleaning the Spark Arrester 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. G019300 Figure 56 1. Side electrode 2. Center electrode WARNING 3. Insulator 4. 0.7 to 0.8 mm (0.028 to 0.031 inch) gap If the engine has been running, the muffler will be hot. 2.
1 6. Use a brush to carefully remove carbon deposits from the spark-arrester screen (Figure 58). 3 Note: Replace the spark arrester if it has breaks or holes. 2 4 5 G0201 19 Figure 59 1 G019332 Figure 58 1. Screen 1. Anchor bracket 4. Spring-removal tool (spring removed) 2. Engine deck 5. Spring (spring removed) 2 3. Spring-removal tool (Toro part 92-5771) 2. Brush 7. Install the spark arrester, muffler protector, exhaust deflector, and muffler in the reverse order of disassembly. 7.
Fuel System Maintenance Servicing the Fuel System Cleaning the Sediment Cup Service Interval: Every 100 hours/Every 6 months (whichever comes first)—Clean the sediment cup. Yearly or before storage—Clean the fuel sediment cup. Underneath the fuel valve is a sediment cup to catch dirt in the fuel. 1. Park the machine on a level surface and stop the engine; refer to Stopping the Engine (page 22). 2. Ensure that the engine and the exhaust system surfaces are cool. 3.
Drive 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 1. Remove the engine; refer to Removing the Engine (page 34). Servicing the Reduction Case—Belt-drive Models 2. Remove the fuel cap by rotating it counterclockwise. Models 68013 and 68014 only 1 Important: Use 4-cycle motor oil that meets or exceeds the requirements for API service category SJ, SL, SM, or higher.
• If the oil level is below the threads in the oil-level 2 port, add oil as follows: 5 A. Remove the filler bolt and washer from the filler port on the top of the reduction case (Figure 64). B. C. 6 4 2 Slowly add the specified oil into the fill port until the oil level is level with the threads at the bottom of the oil-level port. 3 1 Install the filler bolt and the washer to the filler port of the reduction case, and tighten the filler bolt (Figure 64).
11. Install the engine; refer to Installing the Engine (page 35). 5. Using the spring scale, pull the clutch handle to the On position as shown in Figure 67. 6. Observe the spring scale while pulling to see what the highest pressure is when moving the clutch handle from the Off position to the On position (Figure 67). Servicing the Gear Case—Gear-case Model Note: Normal clutch pressure is 15 to 30 kg (35 to 55 lb). Model 68024 only 7.
B. Slowly add the specified oil into the fill port until the oil level is between 1/3 and 1/2 of the sight glass (Figure 68). C. Clean the fill plug. D. Apply PTFE thread-sealing tape to the threads of the plug. Belt Maintenance Servicing the Belts—Belt-drive Models Models 68013, 68014, 68016, 68017, 68020, and 68021 only E. Install the plug into the fill port in the housing (Figure 68). Inspecting the Belts Service Interval: After the first 25 hours—Inspect the belts and adjust as necessary.
1 3. If the measured air gap is not within the specified range, adjust the gap as follows: 2 A. Move the clutch lever to the Off position; refer to Controlling the Paddles (page 22). B. Loosen the nuts and bolts that secure the engine to the engine deck (Figure 70). 1 2 3 3 G020009 3 G020006 4 Figure 70 1. Idler pulley 3. Nut and bolt 2. Setscrew 4. Engine deck 7 8 1. Engine pulley 5. Idler shaft 2. Idler pulley 6. Jam nut 3. Reduction case (engine) 7. Setscrew 4. Belt guide 8.
5. Slip the forward belt over the engine pulley and align the belt to the forward pulley groove. 2 1 6. Check the belt tension; refer to step 1, step 2, and step 3 in Adjusting the Belt Tension (page 39). 7. Loosely secure the belt guide to the engine (Figure 72) with the bolt that was removed in step 3 of Removing the Belts (page 40). 8. Adjust the belt guide; refer to Adjusting the Belt Guide (page 41). 9. Install the divider plate; refer to Installing the Divider Plate (page 28). G020010 Figure 72 1.
Important: The belt guide should not contact the belts with the clutch lever in the On position. Aligning the Pulleys—Belt-drive Models Note: If the air gap between the belt guide and both belts cannot be attained, then one of the belts is too long. Models 68013, 68014, 68016, 68017, 68020, and 68021 only C. Tighten the bolt that secures the belt guide to the engine (Figure 74). D. Check the clutch operation; refer to Checking the Clutch Operation (page 42). 1.
Cleaning Storage Cleaning the Machine Storing the Machine For storage over 30 days, prepare the machine as follows: 1. Remove dirt and grime from the external parts of the entire machine, especially the engine. Clean dirt and debris from the outside of the engine cylinder-head fins and blower housing. Regular cleaning and washing will increase the life span of the machine. Clean the machine after each use, before the dirt hardens.
10. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Toro Dealer. 11. Store the machine in a clean, dry garage or storage area. 12. Cover the machine to protect it and keep it clean.
Troubleshooting Problem The engine will 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.
Problem Possible Cause Corrective Action The paddles rotate slowly when the clutch lever is in the On position (models 68013, 68014, 68016, 68017, 68020, and 68021). 1. The clutch lever is not adjusted correctly. 1. Adjust the belt tension. The paddles rotate slowly when the clutch lever is in the On position (model 68024). 1. The clutch is not adjusted correctly. 1. Contact your Authorized Service Dealer.
Notes: 47
Concrete, Masonry, and Compaction Equipment 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.
