Form No. 3390-592 Rev A MM-658H-P, MM-858H-P, and MM-12511H-S Mortar Mixer Model No. 68017C—Serial No. 316000001 and Up Model No. 68021C—Serial No. 316000001 and Up Model No. 68024C—Serial No. 316000001 and Up G020896 Register at www.Toro.com.
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 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.
Introduction which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions. This machine is designed to mix mortar, plaster, fireproofing material, grout, and other small-grained Portland cement products. A vehicle equipped with an appropriate pintle hitch or ball hitch can tow the machine. Figure 2 Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage.
Contents Troubleshooting ...........................................................46 Safety ........................................................................... 5 Safe Operating Practices........................................... 5 Setup ............................................................................ 8 1 Installing the Dump Handle ................................... 8 2 Installing the Tow Pole .......................................... 8 3 Installing the Safety Chain ...............
Safety • Never let children or untrained people operate or service 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. • the equipment. Local regulations may restrict the age of the operator.
Preparation Operation Become familiar with the safe operation of the equipment, operator controls, and safety signs. • Use only accessories and attachments approved by the manufacturer.
– Shut off the engine. Wait for all movement to stop before adjusting, cleaning, or repairing. – Let the engine cool before performing maintenance or storing. – Remove the spark-plug wire before making any repairs. – 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.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 4 Description Use 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. No parts required – Adjust the mixing paddles. 1. Remove the bolt and nut from the tow pole (Figure 3).
3 4 Installing the Safety Chain Adjusting the Mixing Paddles Parts needed for this procedure: No Parts Required 1 Safety chain 2 Connecting link Procedure If the mixing paddles and wipers need adjustment, adjust the paddles and wipers; refer to Adjusting the Paddles (page 42) Installing the Safety Chain to the Machine 1. Form a hook on the end of a bendable piece of rod or stiff wire (not included), and insert it through both keyholes in the front post of the machine (Figure 4).
Product Overview 3 1 2 13 15 14 12 11 10 9 8 13. Drum 14. Chute 15. Axle 1. Dump handle 7. Light (2) 13. Safety-chain keyhole 2. Bag splitter 8. Wheel assembly 14. Front post 4. Bag splitter 10. Tow pole 16. Wheel assembly 3. Grate 4. Front cowl 5. Rear cowl 9. Clutch lever 10. Drum 11. Tow pole 5. Dump handle 11. Lighting wire harness 12. Safety-chain keyhole 17. Light (2) 6. Cowl latch 12. Lighting wire harness 18.
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 68017C and 68021C) 1 G019877 Figure 10 1.
Engine Controls Choke Lever 5 Use the choke lever (Figure 13) 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 13) 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 68017C 68021C 68024C Batch Capacity 0.17 cubic m (6.0 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) 0.25 cubic m (9.0 cubic ft) 0.42 cubic m (14.8 cubic ft) Drum Material Polyethylene Polyethylene Steel Length (without tow pole) 163 cm (64 inches) 193 cm (86 inches) 205.
Operation Think Safety First Carefully read all safety instructions and symbols in the safety section. Knowing this information could help you or bystanders avoid injury. CAUTION This machine produces sound levels that can cause hearing loss through extended periods of exposure. Wear hearing protection when operating this machine. G019741 The use of protective equipment for eyes, ears, hands, feet, and head is recommended. 1 Figure 16 2 5.
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 (optional kit) Hitching a Machine with a Forged Ball Coupler (optional kit) 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 (Figure 21). 2. Oil the pivot points and sliding surfaces of the coupler with SAE 30 motor oil.
Hitching a Machine with a Pintle Hitch Coupler (optional kit) A 1 1. Remove the pin from the pintle hitch and open it (Figure 22). B 2 3 4 C D G020084 Figure 23 1. Hitch pin 3. Pin-hitch coupler 2. Hairpin cotter 4. Pin/clevis-hitch receiver 2. Insert a 19 mm (3/4 inch) or 22 mm (7/8 inch) hitch pin through the holes in the coupler and the receiver hitch (Figure 23). 3. Insert a hairpin cotter through the hole in the bottom of the hitch pin (Figure 23). 4.
2 1 G020828 Figure 26 Note: The machine uses a standard 4-flat plug. If your tow vehicle has a different type of plug, obtain an adapter from an automotive-parts store. 3 Important: Routinely check the lights to ensure that they are working properly, including the tail lights, brake lights, and each appropriate turn signal. G021 177 Figure 24 1. Connecting links Checking the Lights 3. Chain crossed under tow pole • Ensure that the tail lights of the machine illuminate when 2.
Adjusting the Axle Width • Slide each side of the axle inward to the narrow WARNING • Mechanical or hydraulic jacks may fail to support the machine and cause serious injury. position (Figure 28). Slide each side of the axle outward to the wide (tow) position (Figure 28). 6. Align the holes of the inner axle with the holes of the outer axle. Use jack stands when supporting the machine. 7. Insert the bolts through the axle holes (Figure 28). 8.
• Ensure that the paddles are in place and in good 4. Rotate the rear cowl up and forward until it is fully positioned on top of the front cowl (Figure 29). condition. • Check the fuel and oil levels of the engine. • When preparing to mix material: 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 29). 1. Move the machine to a level job-site surface. 2.
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. Fuel is harmful or fatal if swallowed. Long-term exposure to vapors can cause serious injury and illness. • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any fuel that spills. • Avoid prolonged breathing of vapors. • Keep face away from nozzle and fuel tank or conditioner bottle opening.
Filling the Fuel Tank 1 Model(s) Fuel tank capacity 68017C and 68021C 5.3 L (1.40 US gallons) 68024C 6.1 L (1.61 US gallons) 1. Park the machine on a level surface, shut off the engine, and allow the engine to cool. 2. Clean around the fuel cap and remove it (Figure 30). 1 G020679 Figure 31 1. Maximum fuel level 4. Install the fuel cap securely (Figure 30). G019799 Figure 30 5. Wipe up any fuel that may have spilled. 1. Fuel cap Checking the Engine-Oil Level 3.
30 5W - 30 / 10W - 30 0 20 40 -20 -10 0 60 10 80 20 30 100 F o 40 C o g013375 Figure 32 1. Place the machine on a flat, level surface, and shut off the engine. 2. Allow the engine to cool. 1 3. Clean around the oil dipstick. 2 4. Remove the oil-fill cap/dipstick and wipe the end clean (Figure 33). 3 G019815 Figure 34 1. Choke lever 2. Fuel valve 3. Throttle lever 2. Move the lever of the fuel valve to the ON position—all the way to the right (Figure 34); refer to Fuel Valve (page 12). 3.
Use the clutch lever to control the power transmission to the paddles of the machine. Controlling the Paddles—Belt-drive Models Models 68017C and 68021C 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. If the engine stalls or hesitates, move the choke lever back toward the CLOSED position until the engine runs smooth.
Mixing a Batch of Material in the Machine Controlling the Paddles—Gear-case Model 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 26) and Dumping the Drum (page 26), 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 24). 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 26). 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 26). DANGER Contact with the mixing paddles could cause damage or injury.
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. • Check the gear-case clutch (Model 68024C only). • Inspect the belts and adjust as necessary. Before each use or daily • • • • Inspect the tires and wheels.
Premaintenance Procedures Removing the Divider Plate 1. Unlatch and open the cowl; refer to Opening the Cowl (page 20). 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. Ensure that the machine is secure from movement before you use it. 4.
Lubrication 2. Pump grease into each fitting as follows: • For the pillow-block bearings, pump 1 shot of grease into each fitting (Figure 43). 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 43). 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 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 can occur. 1.
Draining the Engine Oil 10. Rinse and dry the foam element thoroughly. 11. Dip the foam element in clean engine oil, then squeeze out the excess oil. WARNING Oil may be hot after the engine has been run, and contact with hot oil can cause severe personal injury. Note: Excess oil in the foam element restricts the air flow through the element and may reach the paper filter and clog it. Avoid contacting the hot engine oil when you drain it. 12. Wipe dirt from the base and the cover with a moist rag.
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 49). Figure 47 1. Oil-fill hole 3. Oil-level upper limit 2. Dipstick 4. Oil-level lower limit 2. Replace and secure the dipstick. G019749 3. Wipe up any spilled oil. Figure 49 Servicing the Spark Plug Checking the Spark Plug Service Interval: Every 100 hours/Every 6 months (whichever comes first)—Check the spark plug.
B. Servicing the Spark Arrester If the gap is too large, carefully bend the side electrode toward the center electrode until the gap between the electrodes is 0.7 to 0.8 mm (0.028 to 0.031 inch). Cleaning the Spark Arrester Service Interval: Every 100 hours Installing the Spark Plug 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 6. Use a brush to carefully remove carbon deposits from the spark-arrester screen (Figure 52). 3 Note: Replace the spark arrester if it has breaks or holes. 2 4 5 G0201 19 Figure 53 1 G019332 Figure 52 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 shut off the engine; refer to Shutting Off the Engine (page 24). 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 Gear Case—Gear-Case Model 2. Remove the fuel cap by rotating it counterclockwise. Model 68024C only 1 2 Checking the Clutch Operation Service Interval: Before each use or daily—Check the clutch operation (Model 68024C only). 1.
1 2 3 G022166 1 Figure 58 1. Spring scale 3. Clutch lever 2. 15 to 30 kg (35 to 55 lb) 2 5. Using the spring scale, pull the clutch handle to the ON position as shown in Figure 58. 3 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 58). G019900 Figure 59 1. Fill plug Note: Normal clutch pressure is 15 to 30 kg (35 to 55 lb). 3. Drain plug 2. Sight glass 7.
Belt Maintenance 1 Servicing the Belts—Belt-Drive Models Models 68017C and 68021C only Inspecting the Belts Service Interval: After the first 25 hours—Inspect the belts and adjust as necessary. Every 40 hours—Inspect the belts and adjust as necessary. 2 G019976 1. Remove the divider plate; refer to Removing the Divider Plate (page 28). 3 Figure 60 1. Engine deck 2. Move the clutch lever to the OFF position; refer to Controlling the Paddles—Belt-drive Models (page 24). 3.
1 2 2 1 G020010 Figure 63 1. Bolt 3 G020009 5 4 6 7 2. Belt guide 4. Slip the forward belt forward and off the idler pulley (Figure 64). 8 Figure 62 1. Engine pulley 5. Idler shaft 2. Idler pulley 6. Jam nut 3. Reduction case (engine) 7. Setscrew 4. Belt guide 8. Straightedge 2 1 3 4 E. If needed, pivot the engine on the engine deck until the engine pulley and the idler pulley are aligned to the straightedge (Figure 62). F.
Important: The belt guide should not contact the belts with the clutch lever in the ON position. 5. Slip the forward belt over the engine pulley and align the belt to the forward pulley groove. 6. Check the belt tension; refer to step 1, step 2, and step 3 in Adjusting the Belt Tension (page 38). Note: If the air gap between the belt guide and both belts cannot be attained, then one of the belts is too long. 7.
Replacing the Light Bulbs Aligning the Pulleys—Belt-drive Models Models 68017C and 68021C only Replacing the Rear-Facing Taillight Bulbs 1. Remove the divider plate; refer to Removing the Divider Plate (page 28). 2. Place a straightedge across the face of the engine pulley and the idler pulley (Figure 66). 1 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 67).
Maintaining the Mixing Paddles 2. Remove the lens (Figure 68). 3. Pull the bulb out of the socket (Figure 68). 4. Push a new 168 bulb into the socket (Figure 68). 5. Install the lens and the 2 screws (Figure 68). Adjusting the Paddles Replacing the Front Amber Bulbs Aligning the Circumferential Drum Wipers 1. Using a screwdriver, remove the 2 screws from the amber lens on the front of the light (Figure 69). 1.
Aligning the End Paddle Wipers 1. Rotate the wiper and fixed paddle around the endplate of the drum and locate smallest distance between the drum and the wiper of the paddle. 2. Mark the inside of the endplate at the location that you determined in step 1. Figure 71 1. Wiper 4. Paddle blade 2. Distance between paddle-blade edge and wiper edge—3 to 6 mm (1/8 to 1/4 inch) 5. Carriage bolt and flange locknut 3. Wiper bar 5.
Cleaning Storage Cleaning the Machine Storing the Machine For storage over 30 days, prepare the machine as follows: Regular cleaning and washing increase the life span of the machine. Clean the machine after each use, before the mortar hardens. 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.
9. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. 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 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 (Models 68017C 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.
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.
