Form No. 3378-857 Rev A MM-Series Mortar Mixer Model No. 68013C—Serial No. 313000001 and Up Model No. 68014C—Serial No. 313000001 and Up Model No. 68016C—Serial No. 313000001 and Up Model No. 68017C—Serial No. 313000001 and Up Model No. 68020C—Serial No. 313000001 and Up Model No. 68021C—Serial No. 313000001 and Up Model No. 68024C—Serial No. 313000001 and Up G020896 Register at www.Toro.com.
1-800-424-9153); go to http://www.safercar.gov; or write to: Administrator, NHTSA, 1200 New Jersey Avenue, SE West Building, Washington, DC 20590. You can also obtain other information about motor vehicle safety from http://www.safercar.gov. WARNING CALIFORNIA Proposition 65 Warning • To contact Transport Canada, you may call This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm.
Note: The various machines in this manual have different weights; refer to Specifications (page 13) to ensure that the tires on your machine meet or exceed the weight requirements of your machine. Contents Introduction .................................................................. 2 Safety ........................................................................... 4 Safe Operating Practices........................................... 4 Safety and Instructional Decals .................................
Safety Replacing the Side-facing Bulbs ................................43 Cleaning ...................................................................44 Cleaning the Machine..............................................44 Storage ........................................................................44 Storing the Machine................................................44 Troubleshooting ...........................................................
Preparation • Never let children or untrained people operate or service • the equipment. Local regulations may restrict the age of the operator. The owner/user can prevent and is responsible for accidents or injuries occurring to people or damage to property. 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 – Ensure that the tires are properly inflated as recommended. – Ensure that the lug nuts are tight and torqued properly. – Ensure that the machine is properly secured. • 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. Operation – Let the engine cool before performing maintenance or storing.
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 68014C, 68017C, 68021C 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 1 2 13 15 14 12 11 10 9 8 13. Drum 14. Chute 15. Axle 4. Bag splitter 10. Tow pole 16. Wheel assembly 5. Dump handle 11. Lighting wire harness 12. Safety-chain keyhole 17. Light (2) 18. Cowl latch 15 14 1 13 12 2 3 4 11 5 10 9 8 7 6 G022173 Figure 9 Right side (model 68024C) 1. Dump handle 6. Safety-chain keyhole 2. Drum 7. Tow pole 12. Cowl latch 3. Drum latch 4. Front post 8. Grate lift arm 9. Chute 13. Rear cowl 14. Front cowl 5. Lighting wire harness 10.
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 68013C, 68014C, 68016C, 68017C, 68020C, and 68021C) 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 68013C 68014C 68016C 68017C 68020C 68021C 68024C 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 2. Ensure that the tires are inflated to the correct air pressure. The following Tire Air Pressure table shows the appropriate air pressure for the tires as installed at the factory. Service Interval: Before each use or daily—Inspect the tires and wheels. After each use—Torque the lug nuts to 108 to 122 N-m (80 to 90 ft-lb) after towing. Important: Always check the information on the actual tires for the correct air pressure requirement.
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.
Adjusting the Axle Width Connecting the Lighting Wire Harness Connect the electrical plug of the machine with the electrical plug of the tow vehicle, as shown in Figure 27. WARNING Mechanical or hydraulic jacks may fail to support the machine and cause serious injury. Use jack stands when supporting the machine. 1. Align a jack with an adequate lift height and weight capacity under the axle; refer to Specifications (page 13). G020828 Figure 27 2. Lift the machine until the tires are off the ground.
• Ensure that the paddles are in place and in good • Slide each side of the axle inward to the narrow • condition. position (Figure 29). Slide each side of the axle outward to the wide (tow) position (Figure 29). • Check the fuel and oil levels of the engine. • When preparing to mix material: 6. Align the holes of the inner axle with the holes of the outer axle. 1. Move the machine to a level job-site surface. 2. Remove the machine from the tow vehicle. 7.
4. Rotate the rear cowl up and forward until it is fully positioned on top of the front cowl (Figure 30). 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. Closing the Cowl 1. Rotate the rear cowl rearward and down until the receiver at the bottom center of the cowl is aligned with the V-fitting and flush on the frame of the machine (Figure 30).
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 68013C and 68014C 3.1 L (0.82 US gallons) 68016C, 68017C, 68020C, 68021C 5.3 L (1.40 US gallons) 68024C 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 35); refer to Throttle Lever (page 12). 40 C o g013375 Figure 33 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.
Use the clutch lever to control the power transmission to the paddles of the machine. Controlling the Paddles—Belt-drive Models Models 68013C, 68014C, 68016C, 68017C, 68020C, and 68021C only G019747 Figure 36 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. If the engine stalls or hesitates, move the choke lever back toward the Closed position until the engine runs smooth.
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 68024C 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 40). 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 41 Models 68013C, 68016C, 68020C G022163 Figure 43 Model 68024C G022161 Figure 42 Models 68014C, 68017C, 68021C 25
4. Loosen the nuts and bolts that secure the paddle blades to the paddles (Figure 44, Figure 45, or Figure 46). 1 Note: If necessary, tip the drum to the dump position to access the paddles. 2 1 2 G022164 Figure 46 Model 68024C 1. Paddle blade 2. Nut and bolt G022160 Figure 44 Models 68013C, 68016C, 68020C 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 68013C and 68014C only). After the first 25 hours • Change the engine oil. • Check the gear-case clutch (Model 68024C 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 and Closing 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 50). 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 50). 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 51). 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 52). 30 5W - 30 / 10W - 30 0 20 40 -20 -10 0 60 10 80 20 30 100 F o 40 C o g013375 Figure 52 Draining the Engine Oil 1 2 3 G019750 Figure 53 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 55 1. Spark plug 2. Wire 4. Clean around the spark plug. 5. Rotate the spark plug counterclockwise using a 20 mm (13/16 inch) spark-plug wrench to remove the plug and the sealing washer (Figure 56). G019746 Figure 54 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 57 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 59). 3 Note: Replace the spark arrester if it has breaks or holes. 2 4 5 G0201 19 Figure 60 1 G019332 Figure 59 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.
• 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 65). 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 65).
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 68. 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 68). Servicing the Gear Case—Gear-Case Model Note: Normal clutch pressure is 15 to 30 kg (35 to 55 lb). Model 68024C 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 69). 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 68013C, 68014C, 68016C, 68017C, 68020C, and 68021C only E. Install the plug into the fill port in the housing (Figure 69).
1 1 2 G019976 2 3 Figure 70 3 G020009 1. Engine deck 3. Clutch air gap: 6.35 to 9.52 mm (1/4 to 3/8 inch) 6 7 3. If the measured air gap is not within the specified range, adjust the gap as follows: A. Move the clutch lever to the Off position; refer to Controlling the Paddles (page 22). 1. Engine pulley 5. Idler shaft 2. Idler pulley 6. Jam nut 3. Reduction case (engine) 7. Setscrew 4. Belt guide 8. Straightedge E.
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 73) 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 73 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 68013C, 68014C, 68016C, 68017C, 68020C, and 68021C only C. Tighten the bolt that secures the belt guide to the engine (Figure 75). D. Check the clutch operation; refer to Checking the Clutch Operation (page 42). 1.
Replacing the Light Bulbs 2. Remove the lens (Figure 78). 3. Pull the bulb out of the socket (Figure 78). 4. Push a new 168 bulb into the socket (Figure 78). 5. Install the lens and the 2 screws (Figure 78). Replacing the Rear-facing Bulbs Note: The left rear-facing bulb also illuminates license plate. 1. Use a screwdriver to remove the 4 screws from the large square lens on the light (Figure 77). A B C D E F G020829 Figure 77 2. Remove the lens (Figure 77). 3.
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 68013C, 68014C, 68016C, 68017C, 68020C, and 68021C). 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 68024C). 1. The clutch is not adjusted correctly. 1. Contact your Authorized Service Dealer.
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.
