Form No. 3394-892 Rev A MMXD-958H-S Mortar Mixer Model No. 68023—Serial No. 315000001 and Up G020472 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 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.
Safety Note: Refer to Specifications (page 11) and ensure that all replacement tires meet or exceed the ratings for this machine. 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. Contents Safety ....................
Preparation • Never let children or untrained people operate or service the equipment. Local regulations may restrict the age of the operator. 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 lug nuts are tight and torqued properly. • Before performing maintenance, do the following: – Ensure that the machine is properly secured. – Park the machine on level ground. – Stop the engine. Wait for all movement to stop before adjusting, cleaning, or repairing. Operation • Never run an engine in an enclosed or poorly ventilated – Let the engine cool before performing maintenance or storing. area. • Only operate the machine in good lighting conditions.
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 1. Warning—read the Operator’s Manual. 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 Description Use Qty. 1 Dump handle Bolt Nut 1 2 2 Install the dump handle. 2 Tow pole kit (sold separately) 1 Install the tow pole. 3 Safety chain (sold with the optional tow pole kit) Connecting link (sold with the optional tow pole kit) 2 Installing the Dump Handle Parts needed for this procedure: Dump handle 2 Bolt 2 Nut Install the safety chain. 2 5.
2 1 3 A B 1 2 3 4 5 C D 6 4 G019804 Figure 4 1. Tow pole 4. Bolt hole 2. Front post 5. Frame fitting 3. Bolt 6. Nut 3 g019883 Figure 5 2. Slide the tow pole forward and align the hole in the pole with the hole in the frame fitting (Figure 4). 3. Insert the bolt through the holes in the fitting and the pole (Figure 4). Note: Ensure that approximately equal lengths of safety chain extend from either side of the front post.
Product Overview 1 2 3 4 5 6 7 8 16 1 G019875 Figure 7 9 1. Clutch lever 10 15 14 13 12 11 Drum Latch G020474 Figure 6 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 The drum latch (Figure 8) secures the drum to the mix position (upright) for mixing operations and when transporting the machine. 13. Chute 14. Axle 15. Wheel assembly 16. Cowl latch 6. Grate lifter arm 12.
Fuel Valve The fuel valve (Figure 11) is located underneath the choke lever. Move the lever for the fuel valve to the On position before attempting to start the engine. When you have finished mixing, stop the engine and move the fuel valve lever to the Off position. 1 1 3 2 G020750 Figure 9 G018792 1. Dump handle Figure 11 1. Fuel valve 2. Choke lever Engine Controls 3. Throttle lever 5 Choke Lever 4 The choke lever (Figure 11) is required when starting a cold engine.
Operation OFF ON Important: Before operating, check the fuel and oil levels, and remove debris from the machine. Ensure that the area is clear of people. OFF ON Preparing to Tow the Machine 1 2 Important: Ensure that your tow vehicle has towing capacity for the weight of the machine. G021 103 Figure 12 1. Off position 2. On position Important: Use a Class 2 or larger receiver.
Checking the Tires and Wheels Air Pressure: Max 241 kPa (35 psi) 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. Important: The most common cause of tire trouble is underinflation. Maintain full air pressure.
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. 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 18).
Hitching a Machine with a Pintle Hitch Tow Pole (optional kit) Note: Stow the excess chain inside the bottom of the front post by pushing it into the keyholes and latching the appropriate links into the keyhole slots. 1. Remove the pin from the pintle hitch and open it (Figure 19). 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. 2 1 3 G021 177 Figure 20 1.
Extending the Axle 4. Remove the bolts and nuts that secure the inner axle to the outer axle (Figure 23). WARNING 1 2 3 4 3 5 6 5 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. Preparing to Change the Axle Width G020020 Figure 23 1.
Opening and Closing the Cowl WARNING Towing the machine with material in the drum increases the risk of a hitch malfunction and tire failure. In addition, material could bounce out of the drum and hit other vehicles and/or people. Material in the drum increases the weight, which affects momentum and braking distance. Opening the Cowl 1. At the side of the machine where the front cowl and rear cowl meet, grasp the latch and pull it off from the latch anchor on the rear cowl (Figure 24).
Adding Fuel DANGER • For best results, use only clean, fresh (less than 30 days 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. • Always place fuel containers on the ground away from your vehicle before filling.
1 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 The fuel tank capacity is 5.3 L (1.4 US gallons). 1. Park the machine on a level surface, stop the engine, and allow the engine to cool. 2. Clean around the fuel cap and remove it (Figure 25). 1 G020679 Figure 26 1. Maximum fuel level 4. Install the fuel cap securely (Figure 25). 5.
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. Ensure that the clutch lever is in the Off position; refer to Controlling the Paddles (page 20). 2. On the engine, move the throttle lever away from the Min position, 1/3 of the way toward the Max position (Figure 29); refer to Throttle Lever (page 10). 40 C o g013375 Figure 27 1. Place the machine on a flat, level surface, and stop the engine. 2. Allow the engine to cool. 3.
Use the clutch lever to control the power transmission to the paddles of the machine. Using the Clutch Lever Move the clutch lever clockwise to engage the clutch, and counterclockwise to disengage the clutch (Figure 31). G019747 Figure 30 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.
Mixing a Batch of Material in the Machine 8. Release the drum latch and dump the drum; refer to Dumping the Drum (page 21). 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 22) and Dumping the Drum (page 21), then return the drum to the upright position. Using the Drum DANGER Note: Ensure that the drum is in the mix position (upright) and the drum latch is engaged. 2.
6. After discharging a batch of material, clean the drum; refer to Cleaning the Drum (page 22). Note: This step will clean the paddles and drum between batches and prevent dried material from forming, and contaminating the next batch of material. Cleaning the Drum Important: Do not strike on the drum with a shovel, hammer, or any other device to loosen any accumulated dried materials. 1.
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 25 hours • Change the engine oil. • Inspect the belts and adjust as necessary. Before each use or daily • Inspect the tires and wheels. • Check the engine oil level.
Premaintenance Procedures Preparing the Machine for Maintenance 1. Park the machine on a level surface. 2. Remove the machine from the tow vehicle. G020752 3. Chock the tires. Figure 37 4. Open the rear cowl; refer to Opening the Cowl (page 16). 3. To remove the divider plate, lift it upward and rotate it counterclockwise so that it clears various engine components. 5. Ensure that the engine and muffler are cool. 6. Disable the engine; refer to Figure 36.
Lubrication 2. Pump grease into each fitting as follows: • For the pillow-block bearings, pump 1 shot of grease into each fitting (Figure 39). 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 39). Service Interval: After each use—Lubricate the trunnions. Important: Pump grease in slowly and carefully to prevent damage to the bearing seals. Monthly—Lubricate the pillow-block bearings.
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 will 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. 12. Wipe dirt from the base and the cover with a moist rag. Avoid contacting the hot engine oil when you drain it.
Removing the Spark Plug Filling the Engine Crankcase with Oil 1. Park the machine on a level surface and turn off the engine; refer to Stopping the Engine (page 20). 1. Remove the dipstick (Figure 43) and slowly pour oil into the fill hole until the oil reaches the upper-limit mark (bottom edge of the oil-fill hole) on the dipstick. 1 2. Ensure that the machine surfaces are cool. 2 3. Pull the spark-plug wire off the terminal of the spark plug (Figure 44). 3 4 Figure 44 1. Spark plug 4.
Checking the Spark Plug • When installing an in-service spark plug, tighten the plug an additional 1/8 to 1/4 turn. Note: Use a gapping tool/feeler gauge to check and adjust the gap. Install a new spark plug if necessary. • When installing a new spark plug, tighten the plug an additional 1/2 turn. 1. Look at the center of the spark plug (Figure 46). If you see light brown or gray on the insulator, the engine is operating properly. 4.
Note: Leave the other end of the spring attached to the frame of the machine. 3. Remove the 3 screws (4 mm) from the exhaust deflector and remove the deflector (Figure 47). 1 4. Remove the screws (5 mm and 6 mm) from the muffler protector, and remove the muffler protector (Figure 47). 3 2 5. Remove the screw (4 mm) from the spark arrester and remove the spark arrester from the muffler (Figure 47). 6. Use a brush to carefully remove carbon deposits from the spark-arrester screen (Figure 48).
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 20). 2. Ensure that the engine and the exhaust system surfaces are cool. 3.
Belt 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. Servicing the Belts Draining the Fuel Tank Inspecting the Belts 1. Remove the engine; refer to Removing the Engine (page 30). Service Interval: After the first 25 hours—Inspect the belts and adjust as necessary. 2. Remove the fuel cap by rotating it counterclockwise. 1 Every 40 hours—Inspect the belts and adjust as necessary. 2 1.
A. Move the clutch lever to the Off position; refer to Controlling the Paddles (page 20). B. Loosen the nuts and bolts that secure the engine to the engine deck (Figure 55). E. If needed, pivot the engine on the engine deck until the engine pulley and the idler pulley are aligned to the straightedge (Figure 56). F. Tighten the nuts and bolts that secure the engine to the engine deck to a torque of 18 N-m (13 ft-lb). G. Check the air gap between the engine deck and the roller on the clutch.
Adjusting the Belt Guide Note: To access the belt guide, remove the divider plate; refer to Removing the Divider Plate (page 24). 2 1 3 4 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; refer to Controlling the Paddles (page 20). 2. Ensure that the belt tension is correct; refer to Adjusting the Belt Tension (page 32). 3. Check that the air gap between the belt guide and the belts is 2.5 to 4.0 mm (3/32 to 5/32 inch); refer to Figure 59.
Checking the Clutch Operation Note: Both pulleys must be aligned flush with the straightedge. Service Interval: Every 40 hours—Check the clutch operation. 3. If the pulleys are not aligned do the following: A. Move the clutch lever to the Off position. Important: The paddles must not rotate in an empty drum when the clutch lever is in the Off position. 1. Move the clutch lever to the Off position; refer to Using the Clutch Lever (page 20). B.
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.
Notes: 39
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.
