Form No. 3405-112 Rev B MM-Series Mortar Mixer Model No. Model No. Model No. Model No. Model No. Model No. Model No. Register at www.Toro.com. Original Instructions (EN) 68013—Serial No. 68014—Serial No. 68016—Serial No. 68017—Serial No. 68020—Serial No. 68021—Serial No. 68024—Serial No.
It is a violation of California Public Resource Code Section 4442 or 4443 to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the engine is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order or the engine is constructed, equipped, and maintained for the prevention of fire. Dealer or Toro Customer Service and have the model and serial numbers of your product ready.
This manual identifies potential hazards and has safety messages identified by the safety-alert symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions. Servicing the Engine Oil.................................... 31 Servicing the Spark Plug................................... 33 Cleaning the Spark Arrester.............................. 34 Removing and Installing the Engine .................. 35 Fuel System Maintenance ...............
Safety • Read and understand the contents of this Operator’s Manual before you start the engine. Ensure that everyone using this product knows how to use it and understands the warnings. Improper use or maintenance by the operator or owner can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety-alert symbol (Figure 2), which means: Caution, Warning, or Danger—personal safety instruction.
• Do not carry any material in the machine when • • • • • • • – Ensure that the lug nuts are tight and torqued properly. – Ensure that the machine is properly secured. towing. Avoid sudden stops and starts. This can cause skidding or jackknifing. Smooth, gradual starts and stops improves towing. Avoid sharp turns to prevent rolling. Tow only with a vehicle that has a hitch designed for towing. Do not attach towed equipment except at the hitch point. Do not tow the machine faster than 88 km/h (55 mph).
• Ensure that all the guards and shields are securely in place before operating the machine. • If the mixing paddles strike an object or if the machine starts making an unusual noise or vibration, shut off the engine, wait for all moving parts to stop, and empty the drum. Inspect for clogging or damage. Clean, repair, and/or replace any damaged parts. • Do not change the engine governor setting or overspeed the engine. • Do not operate the machine when there is the risk of lightning.
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. decal125-8175 125-8175 1. Read the Operator’s Manual for information on greasing the machine. decal125-4939 125-4939 1. Warning—read the Operator’s Manual. 4. Toxic gas inhalation hazard—Do not run the engine in an enclosed space. 2.
decal133-5619 133-5619 decal130-8322 130-8322 1. Use fuel with an alcohol content by volume under 10% only. 3. Do not use fuel with an alcohol content greater than 10% by volume. 2. Read the Operator's Manual for more information on fuel. decal132-3997 132-3997 1. Read the Operator's Manual for more information on servicing the machine.
decal132-4043 132-4043 1. Read the Operator's Manual for more information on servicing the machine.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure Description Qty. Use 1 Dump handle Bolt Nut 1 2 2 Install the dump handle. 2 Tow pole kit (sold separately) 1 Install the tow pole (side-dump models only). 3 Safety chain (included with the tow pole kit) Connecting link (included with the tow pole kit) 1 Install the safety chain. 2 1 Installing the Dump Handle Parts needed for this procedure: 1 Dump handle 2 Bolt 2 Nut Procedure 1.
g022149 Figure 5 Model 68024 g019804 Figure 6 2 1. Tow pole 4. Bolt hole 2. Front post 5. Frame fitting 3. Bolt 6. Nut 2. Slide the tow pole forward and align the hole in the pole with the hole in the frame fitting (Figure 6). 3. Insert the bolt through the holes in the fitting and the pole (Figure 6). 4. Thread the nut onto the bolt and tighten them until they are tight against the frame fitting (Figure 6).
3 Installing the Safety Chain Parts needed for this procedure: 1 Safety chain (included with the tow pole kit) 2 Connecting link (included with the tow pole kit) Procedure Safety chain and connecting link are included in the tow pole kit (sold separately); refer to 2 Installing the Tow Pole (page 11). Form a hook on the end of a bendable piece of rod or stiff wire (not included) and install the safety chain and connecting links as shown in Figure 7.
Product Overview g022179 g019773 Figure 9 Right Side (Gearbox Model) Figure 8 Right Side (Belt-Drive Models) 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 13. Chute 14. Axle 15. Wheel assembly 1. Dump handle 6. Tow pole 11. Rear cowl 2. Drum 3. Drum latch 4. Front post 7. Grate lift arm 8. Chute 9. Wheel assembly 12. Front cowl 13. Grate 16. Cowl latch 5.
Controls Drum Latch Become familiar with all the controls before you start the engine and operate the machine. Use the drum latch to secure the drum to the mix position (upright) for mixing operations and when transporting the machine. Clutch Lever Use the clutch lever to engage and disengage the paddles. g019877 Figure 13 1. Drum latch Dump Handle g019875 Figure 11 Belt-Drive Models Use the dump handle to rotate the drum to the dump position and to rotate the drum to the mix position (upright).
Engine Controls Choke Lever 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 if the air temperature is high. Throttle Lever 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 m3 68014 m3 68016 m3 68017 m3 68020 68021 m3 68024 Batch Capacity 0.17 (6.0 ft3) 0.17 (6.0 ft3) 0.17 (6.0 ft3) 0.17 (6.0 ft3) 0.23 (8.0 ft3) 0.23 (8.0 ft3) 0.34 m3 (12.0 ft3) Total Volume 0.20 m3 (6.9 ft3) 0.20 m3 (6.9 ft3) 0.20 m3 (6.9 ft3) 0.20 m3 (6.9 ft3) 0.25 m3 (9.0 ft3) 0.25 m3 (9.0 ft3) 0.42 m3 (14.
Operation WARNING Think Safety First 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 detaches from the tow vehicle at high speed, it could cause damage to property, or injury or death to bystanders. Carefully read all safety instructions and symbols in this manual, on the product decals, and other media supplied with the product.
3. Position the drum in the mix position (upright) and lock it. 4. Close the engine cowl and secure the cowl latches (Figure 19). g019741 Figure 19 5. If you have adjusted the axle to the narrow position (if equipped on your model), extend the axle; refer to Adjusting the Axle Width (page 20). 6. Inspect the tires; refer to Inspecting the Tires (page 37).
Connecting the Safety Chains to the Tow Vehicle 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. g035115 Figure 21 Note: Use a wrench to keep the bolt from spinning. Hitching a Pintle-Hitch Coupler g021177 Figure 23 1. Connecting links 3.
The corresponding turn-signal lights of the machine should illuminate. Adjusting the Axle Width Models with Adjustable Axles Only If your model is equipped with an adjustable axle (Figure 27), you can adjust the axle to the narrow position to move the machine through a narrow access point, such as the gate of a fence or the doorway of a building. WARNING g019927 Figure 24 1. Connecting link 3. Chain link 2. Safety chain mounting point on tow vehicle 4.
Preparing to Use the Machine 1. Park the machine on a level surface and disconnect the machine from the tow vehicle. 2. Ensure that all guards and paddles are in place and in good condition. 3. Perform all daily maintenance procedures prescribed in Maintenance (page 27). 4. Chock the front and back of the tires to prevent the machine from moving. 5. Move the drum to the upright position and lock it. Opening the Cowl g029390 Figure 26 1. Support point (2) 7.
Closing the Cowl DANGER In certain conditions during fueling, static electricity can be released, causing a spark that can ignite the fuel vapors. A fire or explosion from fuel can burn you and others and can damage property. • Always place fuel containers on the ground away from your vehicle before filling. • Do not fill fuel containers inside a vehicle or on a truck or trailer bed, because interior carpets or plastic truck bed liners may insulate the container and slow the loss of any static charge.
• Do not store fuel either in the fuel tank or in fuel Important: This space in the tank allows fuel to expand. Do not fill the fuel tank completely full. containers over the winter unless you use a fuel stabilizer. • Do not add oil to gasoline. Important: To reduce starting problems, add fuel stabilizer to the fuel all season, mixing it with fuel less than 30 days old; run the machine dry before storing it for more than 30 days. Do not use fuel additives other than a fuel stabilizer/conditioner.
Performing Daily Maintenance Before starting the machine each day, perform the Each Use/Daily procedures listed in Maintenance (page 27). Starting the Engine g021103 Figure 33 1. Ensure that the clutch lever is in the OFF position. 2. Move the fuel valve to the OPEN position, all the way to the right (Figure 32). 1. Engine switch—OFF position 6. 2. Engine switch—ON position Pull the starter handle lightly until you feel resistance, then pull the handle briskly (Figure 34).
Mixing the Material DANGER Eye and skin contact with concrete materials and breathing the dust involved is hazardous to your health. • Ensure that there is adequate air ventilation. • Wear a dust mask to prevent inhalation of dust while using the machine; refer to Safe Operating Practices (page 4). • Avoid direct contact of cement and concrete materials with skin and eyes. g019873 DANGER Figure 35 Belt-Drive Models This machine is capable of amputating hands. 1.
g035366 Figure 38 g021179 Figure 37 C. 7. If you are using sand and/or other reinforcing materials, add them into the drum. 1. Dump handle—Mix position 3. Drum latch—Locked position 2. Drum latch—Release position 4. Dump handle—Dump position 3. 4. Allow the paddles to mix the material until the ingredients have a uniform appearance. Note: If needed, add water or plaster, cement, or other binding material until the consistency of the batch is correct.
Maintenance WARNING Failure to properly maintain the machine could result in premature failure of machine systems causing possible harm to you or bystanders. Keep the machine well maintained and in good working order as indicated in these instructions. Important: Refer to your engine operator's manual for additional maintenance procedures.
Pre-Maintenance Procedures Preparing the Machine for Maintenance 1. Shut off the engine and allow it to cool completely. 2. Park the machine on a level surface. 3. Remove the machine from the tow vehicle. 4. Secure the machine from movement. 5. Disconnect the spark-plug wire. g020752 Figure 40 3. Disconnecting the Spark-Plug Wire To remove the divider plate, lift it upward and tilt it back so that it clears various components.
Lubrication Lubricating the Bearings and Seals Service Interval: After each use—Lubricate the trunnions. Monthly—Lubricate the pillow-block bearings. Note: The pillow-block bearings are inside the cowl—remove the divider plate if equipped) to access them; refer to Removing the Divider Plate (page 28). g020684 Grease Type: No. 2 lithium grease. 1. Complete the procedures listed in Preparing the Machine for Maintenance (page 28). 2.
Engine Maintenance Servicing the Air Cleaner 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. Replace it more frequently in dusty operating conditions. Important: Do not operate the engine without the air-filter assembly; extreme engine damage will occur. 1.
9. 10. Rinse and dry the foam element thoroughly. Checking the Engine-Oil Level 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. 11. Wipe dirt from the base and the cover with a moist rag. Note: Be careful to prevent dirt and debris from entering the air duct leading to the carburetor. 12.
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. 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 28). 3. Place a drain pan under the oil-drain hole of the engine (Figure 46). g019746 Figure 47 g019750 Figure 46 1. Oil-drain plug 3. Oil-drain pan 2. Oil-drain hole 4.
Servicing the Spark Plug Service Interval: Every 100 hours/Every 6 months (whichever comes first)—Check the spark plug. Every 300 hours/Yearly (whichever comes first)—Replace the spark plug. Spark Plug Specifications Type: NGK BPR6ES or equivalent Gap: 0.7 to 0.8 mm (0.028 to 0.031 inch) Note: Use a 21 mm (13/16 inch) spark-plug wrench g019749 Figure 49 for removing and installing the spark plug. Removing the Spark Plug 1.
Installing the Spark Plug Cleaning the Spark Arrester Important: Ensure that the gap between the side Service Interval: Every 100 hours and center electrodes is correct before installing the spark plug. 1. Note: A spark arrester is available as an option. If you require a spark arrester, contact your Authorized Service Dealer. Genuine Toro spark arresters are approved by the USDA Forestry Service. Thread the spark plug clockwise into the spark-plug hole by hand.
7. 8. 9. 7. Remove the screws (5 mm and 6 mm) from the muffler protector, and remove the muffler protector (Figure 51). Remove the screws (4 mm) from the spark arrester, and remove the spark arrester from the muffler (Figure 51). Use a brush to carefully remove carbon deposits from the spark-arrester screen (Figure 52). Using a spring-removal tool (Toro Part No. 92-5771), remove the spring from the anchor bracket on the engine deck (Figure 53).
Fuel System Maintenance Note: Do not remove the forward hinge bracket. Cleaning the Fuel-Sediment Cup 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. Underneath the fuel valve is a sediment cup to catch dirt in the fuel. 1. Park the machine on a level surface and shut off the engine. 2. Allow the engine to cool. 3.
10. Align the O-ring in to the groove in the sediment cup and install the sediment cup to the fuel-valve housing. 11. 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. Drive System Maintenance Tire Air Pressure The following table shows the appropriate air pressure for the tires as installed at the factory. Draining the Fuel Tank 1. Remove the engine; refer to Removing the Engine (page 35). 2.
Servicing the Reduction Case Models 68013 and 68014 Only Important: If the oil level in the reduction case is too low or too high and you run the engine, you may damage the engine or the reduction case. This type of damage is not covered by the warranty. g020836 Figure 59 1. Example of tire wear caused by underinflation Reduction-Case Oil Specifications Oil type: 4-cycle, SAE 10W-30 motor oil Oil API service category: SJ, SL, SM, or higher Reduction-case capacity: 1.
6. Align a rag below the oil-level port in the side of the reduction case. 7. Remove the oil-level-check bolt and washer from the oil-level port (Figure 62). • If the oil level is below the threads in the oil-level port, add oil as follows: A. Remove the filler bolt and washer from the filler port on the top of the reduction case (Figure 62). B. Slowly pour the specified oil into the fill port until the oil level is level with the threads at the bottom of the oil-level port. C.
13. Install the filler bolt and washer to the filler port of the reduction case and tighten the filler bolt (Figure 63). 14. Install the engine; refer to Installing the Engine (page 36). F. 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 65). Note: Normal clutch pressure is 15 to 30 kg (35 to 55 lb). Servicing the Gearbox G.
7. Clean the drain and fill plugs and apply PTFE thread-sealing tape to the plug threads. 8. Install the drain plug in the drain port (Figure 66). 9. Slowly pour the specified oil into the fill port until the oil level is between 1/3 and 1/2 of the sight glass (Figure 66). 10. g019900 Figure 66 1. Fill plug 3. Drain plug 2. Sight glass 6. If the oil level is below the bottom 1/3 of the sight glass, add oil as follows: A.
Belt Maintenance Inspecting the Belts Service Interval: After the first 25 hours—Inspect the belts and adjust as necessary (belt-drive models only). Every 40 hours—Inspect the belts and adjust as necessary (belt-drive models only). 1. Park the machine on a level surface and shut off the engine. 2. Allow the machine to cool. 3. Disconnect the wire from the spark plug; refer to Disconnecting the Spark-Plug Wire (page 28). 4. Remove the divider plate; refer to Removing the Divider Plate (page 28). 5.
5. Remove the divider plate; refer to Removing the Divider Plate (page 28). 6. Remove the bolt that secures the belt guide to the engine, and remove the belt guide (Figure 70). g020010 Figure 70 g020009 Figure 69 1. Bolt 1. Engine pulley 5. Idler shaft 2. Idler pulley 6. Jam nut 3. Reduction case (engine) 7. Setscrew 4. Belt guide 8. Straightedge E. If necessary, pivot the engine on the engine deck until the engine pulley and idler pulley are aligned to the straightedge (Figure 69). F.
3. Disconnect the wire from the spark plug; refer to Disconnecting the Spark-Plug Wire (page 28). 4. Ensure that the clutch lever is in the OFF position. 5. Align the rear belt to the rear groove in the engine pulley. Note: Do not align the rear belt to the idler pulley. 6. Align the forward belt to the forward groove of the idler pulley. 7. Slip the rear belt over the idler pulley and align the belt to the rear pulley groove. 8.
A. Shut off the engine. B. Check the air gap between the belt guide and the belts. Note: If the air gap is larger than 4.0 mm B. Loosen the locknuts and setscrews that secure the idler pulley to the idler shaft (Figure 73). C. Using a soft-face mallet, tap the idler pulley forward or backward along the idler shaft until the engine pulley and idler pulley are aligned to the straight edge (Figure 73). D. Tighten the set screws and locknuts that secure the idler pulley to the idler shaft (Figure 73).
Paddle Maintenance Adjusting the Paddle Blades 1. Park the machine on a level surface and shut off the engine. 2. Allow the engine to cool. 3. Disconnect the wire from the spark plug; refer to Disconnecting the Spark-Plug Wire (page 28). 4. Remove the nuts and bolts that secure the grate to the drum, and remove the grate (Figure 74, Figure 75, or Figure 76).
5. Cleaning Loosen the carriage bolts and nuts that secure the wipers to the paddle bladess (Figure 77). Note: If necessary, tip the drum to the dump Cleaning the Machine position to access the paddles. 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. Remove dirt and grime from the external parts of the entire machine, especially the engine.
Storage Note: Do not install the wire on the spark plug. 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. Important: You can wash the machine with mild detergent and water. 2. 8. Grease the machine; refer to Lubricating the Bearings and Seals (page 29). 9. Check and tighten all bolts, nuts, and screws.
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.
Problem Possible Cause Corrective Action The paddles rotate slowly when the clutch lever is in the ON position (belt-drive models only). 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 (gearbox model only). 1. The clutch is not adjusted correctly. 1. Contact your Authorized Service Dealer.
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.
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.
