Form No. 3421-370 Rev A MM-12511H-S Mortar Mixer Model No. 68024—Serial No. 402100000 and Up Register at www.Toro.com.
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 serious injury or death if you do not follow the recommended precautions. Safety ....................................................................... 4 Safe Operating Practices.................................... 4 Safety and Instructional Decals .......................... 7 Setup ...................................................................... 10 1 Installing the Dump Handle ............................ 10 2 Installing the Tow Pole ....................................
Safety • All operators and mechanics should be trained. 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. Failure to comply with the instruction may result in personal injury or death.
• • • • • • not attach towed equipment except at the hitch point. Do not tow the machine faster than 88 km/h (55 mph). Use caution when backing up; use a spotter outside the vehicle to guide you. Do not allow anyone to sit or ride on the machine. Disconnect the machine from the tow vehicle before using it. Secure the machine from movement before you tow it. Place chock blocks underneath the tires to prevent them from rolling while the machine is parked.
• Do not touch parts which may be hot from • Secure the machine from movement and chock operation. Allow them to cool before attempting to maintain, adjust, or service the machine. the tires when storing the machine. • Keep all nuts, bolts, screws, and hose clamps • Never move the machine while the engine is securely tightened. Keep the machine in good condition. running. • Keep the cowl closed and latched during operation.
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 missing. decal133-5619 133-5619 decal130-8322 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. decal125-8175 125-8175 1. Read the Operator’s Manual for information on greasing the machine. decal125-8216 125-8216 1.
decal125-4939 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.
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 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 Installing the Dump Handle to the Drum 1.
g022149 Figure 5 Model 68024 g019804 Figure 6 3. 1. Tow pole 4. Bolt hole 2. Front post 5. Frame fitting 3. Bolt 6. Nut Insert the 2 bolts through the bolt holes in the dump handle and the drum (Figure 3, Figure 4, or Figure 5). 4. Install a nut onto each bolt and tighten them by hand to prevent cross-threading. 2. 5. Tighten the nuts with a wrench while using another wrench to keep the bolts from spinning.
3 Installing the Safety Chain Parts needed for this procedure: 1 Safety chain 2 Connecting link Procedure 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 7. g035100 Figure 7 Note: Ensure that approximately equal lengths of safety chain extend from either side of the front post.
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. 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. g019877 Figure 13 1.
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 68020 m3 68021 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.
5. Extend the axle (belt-drive models only); refer to Extending the Axle (page 19). Checking the Tires and Wheels Service Interval: Before each use or daily—Inspect the tires and wheels. WARNING g010293 Figure 20 Failure to maintain correct tire pressure may result in tire failure and loss of control, resulting in property damage and serious injury or death. 1. Example of tire wear caused by overinflation 2. • Check the tire pressure frequently to ensure proper inflation.
Hitching a Machine with a Stamped Ball Coupler 1. 2. 3. 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. Hitch the machine as shown in Figure 22. 2. Apply chassis grease to the socket of the coupler and the area of the clamp that contacts the ball. 3. Install hitch the machine as shown in Figure 23. g035115 Figure 23 Note: Use a wrench to keep the bolt from spinning. 4.
2. If the machine is equipped with a trailer-light kit, connect the wire plug of the tow vehicle to the wire plug of the machine. 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. g019927 Figure 26 1.
Adjusting the Axle Width • Slide each side of the axle inward to the WARNING Mechanical or hydraulic jacks may fail to support the machine and cause serious injury. 6. Use jack stands when supporting the machine. 7. 8. 1. Align a jack with an adequate lift height and weight capacity under the axle; refer to Specifications (page 16). 2. Lift the machine until the tires are off the ground. 3. Use a jack stand at each support point on the rear frame extension (Figure 27).
Closing the Cowl mesh visor alone does not provide sufficient eye protection; supplement with protective glasses. • Ensure that you are familiar with safety regulations and shutdown procedures described in this Operator’s Manual and the engine owner’s manual. • Ensure that all guards are in place and in good condition. • Ensure that the paddles are in place and in good condition. • Check the fuel and oil levels of the engine. • When preparing to mix material: 1.
DANGER WARNING 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.
g019799 Figure 31 1. Fuel cap 3. Add fuel to the fuel tank, until the level is at the bottom of the maximum fuel level, as shown in Figure 32. g020679 Figure 32 1. Maximum fuel level Important: This space in the tank allows the fuel to expand. Do not fill the fuel tank completely full. 4. Install the fuel cap securely (Figure 31). 5. Wipe up any spilled fuel.
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 33). g019747 Figure 34 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.
Mixing the Material Use the clutch lever to control the power transmission to the paddles of the machine (Figure 35 or Figure 36). 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.
Mixing a Batch of Material in the Machine 1. Note: If needed, add water or plaster, cement, or other binding material until the consistency of the batch is correct. Ensure that there is no old, loose material in the drum that can contaminate the batch of material; refer to Cleaning the Drum (page 27) and Dumping the Drum (page 26), then return the drum to the upright position. 8. Release the drum latch and dump the drum; refer to Dumping the Drum (page 26).
3. Lift the handle of the drum latch (Figure 38). 4. With both hands on the dump handle, rotate it counterclockwise to discharge the contents of the drum (Figure 38). Note: Allow the machine to completely discharge the contents of the drum. 5. Rotate the dump handle clockwise until the drum latch locks the drum in the upright position (Figure 38). 6. After discharging a batch of material, clean the drum; refer to Cleaning the Drum (page 27).
g022163 Figure 41 Model 68024 g022162 4. Figure 43 Models 68014, 68017, 68021 Loosen the nuts and bolts that secure the paddle blades to the paddles (Figure 42, Figure 43, or Figure 44). 1. Paddle blade 2. Nut and bolt Note: If necessary, tip the drum to the dump position to access the paddles. g022164 Figure 44 Model 68024 g022160 Figure 42 Models 68013, 68016, 68020 1. Paddle blade 1. Paddle blade 2. Nut and bolt 2. Nut and bolt 5.
Note: Ensure that the clutch lever is in the OFF position and rotate the paddles as needed. g029188 Figure 45 1. Wiper 4. Paddle blade 2. 3 to 6 mm (1/8 to 1/4 inch) 5. Carriage bolt 3. Wiper bar 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.
Maintenance 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 gearbox clutch (gearbox model only). • Inspect the belts and adjust as necessary (belt-drive models only). Before each use or daily • • • • • Inspect the tires and wheels. Inspect the air-cleaner elements. Check the engine-oil level.
Pre-Maintenance Procedures 2. Use a wrench to remove the 4 bolts that secure the divider plate to the front cowl. Note: Retain the bolts for installing the divider plate. Preparing the Machine for Maintenance 1. Park the machine on a level surface and shut off the engine. 2. Remove the machine from the tow vehicle. 3. Secure the machine from movement. 4. Open the rear cowl; refer to Opening the Cowl (page 21). 5. Ensure that the engine and muffler are cool. 6.
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 to access them; refer to Removing the Divider Plate (page 31). Model 68024 does not have a divider plate. g020684 Grease Type: No. 2 lithium grease. 1. Clean around each grease fitting with a rag and lift the plastic cap off the grease fitting (Figure 49). g020685 Figure 49 1.
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. 1. Place the machine on a flat, level surface, and shut off the engine. 2. Allow the engine to cool. 3.
Changing the Engine Oil 7. Replace and secure the dipstick. Service Interval: After the first 25 hours Every 100 hours 8. Wipe up any spilled oil. 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 31). 3.
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. 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 for removing and installing the spark plug. g019749 Figure 55 Removing the Spark Plug 1. Park the machine on a level surface and shut off the engine. 2.
Checking the Spark Plug Servicing the Spark Arrester 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. Cleaning the Spark Arrester Note: If you see light brown or gray on the insulator, Service Interval: Every 100 hours the engine is operating properly. A black coating on the insulator usually means that the air cleaner is dirty. Note: A spark arrester is available as an option.
5. Remove the screw (4 mm) from the spark arrester and remove the spark arrester from the muffler (Figure 57). 6. Use a brush to carefully remove carbon deposits from the spark-arrester screen (Figure 58). Note: Leave the other end of the spring attached to the frame of the machine. Note: Replace the spark arrester if it has breaks or holes. g020119 Figure 59 g019332 Figure 58 1.
Fuel System Maintenance 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. g020121 Figure 61 10. Remove the engine and engine deck from the machine (Figure 61). Installing the Engine 1. Align the engine and engine deck to the rear frame of the machine. 1.
9. 10. Drive System Maintenance Align the O-ring in to the groove in the sediment cup and install the sediment cup to the fuel-valve housing. 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. Servicing the Reduction Case Draining the Fuel Tank 1. Remove the engine; refer to Removing the Engine (page 38). 2. Remove the fuel cap by rotating it counterclockwise (Figure 63).
4. Remove the oil-level-check bolt and washer from the oil-level port (Figure 65). • 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 65). B. 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. C.
10. Install the filler bolt and washer to the filler port of the reduction case and tighten the filler bolt (Figure 66). 11. Install the engine; refer to Installing the Engine (page 39). Servicing the Gearbox Gearbox Model Only g022166 Figure 68 Checking the Clutch Operation 1. Spring scale 2. 15 to 30 kg (35 to 55 lb) Service Interval: Before each use or daily—Check the clutch operation (gearbox model only). 1. Move the clutch lever to the OFF position. 2. Start the engine. 3.
Belt Maintenance Servicing the Belts Belt-Drive Models Only 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. Remove the divider plate; refer to Removing the Divider Plate (page 31). 2. Move the clutch lever to the OFF position. 3. Examine the belts for wear or damage.
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. B. Loosen the nuts and bolts that secure the engine to the engine deck (Figure 71). g020009 Figure 72 g020006 Figure 71 1. Idler pulley 3. Nut and bolt 2. Setscrew 4. Engine deck C. Move the engine position as follows: 1. Engine pulley 5. Idler shaft 2. Idler pulley 6. Jam nut 3. Reduction case (engine) 7. Setscrew 4. Belt guide 8. Straightedge E.
Replacing the Belts Installing the Belts Service Interval: Every 2 years—Replace the belts (belt-drive models only). 1. Ensure that the clutch lever is in the OFF position. 2. Align the rear belt to the rear groove in the engine pulley. Removing the Belts 1. Move the clutch lever to the OFF position. Note: Do not align the rear belt to the idler 2. Remove the divider plate; refer to Removing the Divider Plate (page 31). pulley. 3.
Adjusting the Belt Guide Checking the Clutch Operation Note: To access the belt guide, remove the divider Service Interval: Every 40 hours—Check the clutch operation plate; refer to Removing the Divider Plate (page 31). Guide air gap: 2.5 to 4.0 mm (3/32 to 5/32 inch) 1. Ensure that the clutch lever is in the ON position. 2. Ensure that the belt tension is correct; refer to Adjusting the Belt Tension (page 43). 3. Check that the air gap between the belt guide and the belts is 2.5 to 4.
Aligning the Pulleys Cleaning Belt-Drive Models Only 1. Remove the divider plate; refer to Removing the Divider Plate (page 31). 2. Place a straightedge across the face of the engine pulley and the idler pulley (Figure 76). Cleaning the Machine 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 C. Note: Do not install the wire on the spark Storing the Machine 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. 8. Grease the machine; refer to Lubricating the Bearings and Seals (page 32). 9. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. 10.
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.
Notes:
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.
