Form No. 3451-484 Rev A STX-38 EFI Stump Grinder with Intelli-Sweep® Model No. 23214—Serial No. 410500000 and Up Register at www.Toro.com.
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Cooling System Maintenance .............................. 32 Cleaning the Engine Screen ............................. 32 Belt Maintenance ................................................ 33 Replacing the Hydrostatic Pump Drive Belt................................................................ 33 Controls System Maintenance ............................. 33 Adjusting the Traction-Control Alignment...................................................... 33 Hydraulic System Maintenance .........................
Safety • Keep bystanders and pets away from the machine. • Read and understand the content of this Operator’s Manual before starting the engine. General Safety • Never allow children or untrained people to operate the machine. DANGER • Do not operate the machine without the guards There may be buried utility lines in the work area. Digging into them may cause a shock or an explosion. and other safety protective devices in place and working on the machine.
decal93-7814 93-7814 decal107-9366 107-9366 1. Entanglement hazard, belt—stay away from moving parts; keep all guards and shields in place. 1. Thrown object hazard—keep bystanders away from the machine. decal115-2047 115-2047 1. Warning—do not touch the hot surface. decal93-9084 93-9084 1. Lift point/Tie-down point decal115-4020 115-4020 1. Turn right 3. Reverse 2. Forward 4. Turn left decal93-9363 93-9363 1. Parking brake 3. Unlocked 2.
decal133-8062 133-8062 decal121-4538 121-4538 1. Attention—read the Operator’s Manual; release the valve to lower the grinder head before using the machine for the first time. decal145-6921 145-6921 1. Read the Operator’s Manual. decal130-7580 130-7580 1. Engine—start 5. Engine speed—slow 2. Engine—run 6. Engine indicator light 3. Engine—stop 7.
decal119-4606 119-4606 5. Explosion and electric shock hazard—do not dig in areas with buried utility lines; contact local power organizations before digging. 1. Warning—read the Operator's Manual. 2. Cutting/dismemberment hazard; grinder—keep bystanders 6. Tipping/crushing hazard—lower the cutter head when away from the machine; do not operate the grinder head while operating on slopes. transporting the machine. 3. Warning—stay away from moving parts; wait for all moving parts to stop. 7.
Setup Product Overview Checking the Fluid Levels Before starting the engine for the first time, check the engine-oil and hydraulic-fluid levels. Refer to the following sections for more information: • Checking the Engine-Oil Level (page 22) • Checking the Hydraulic-Fluid Level (page 36) Charging the Battery Charge the battery; refer to Charging the Battery (page 28) for more information.
Key Switch Traction Control The key switch, used to start and shut off the engine, has 3 positions: OFF, RUN, and START . Refer to Starting the Engine (page 15). Throttle Lever Move the control forward to increase the engine speed and rearward to decrease the engine speed. g008128 Figure 7 Hour Meter 1. Reference bar 2. Traction control The hour meter displays the number of hours of operation that have been logged on the machine.
• To turn right, rotate the traction control clockwise (Figure 10). g008131 Figure 10 • To turn left, rotate the traction control counterclockwise (Figure 11). g008132 Figure 11 • To stop the machine, release the traction control (Figure 7). Note: The farther you move the traction control in any direction, the faster the machine moves in that direction.
• To raise the grinder, pull the lever rearward (Figure 13). g019836 g019837 Figure 15 Lift/Lower Speed Control g019834 Figure 13 You can change how quickly the grinder head raises and lowers using the lift/lower speed control, located under the right side of the control panel (Figure 16). Rotate the dial counter clockwise to increase the speed or rotate it clockwise to reduce the speed. • To lower the grinder, push the lever forward (Figure 14).
Operation Note: Determine the left and right sides of the machine from the normal operating position. Before Operation Before Operation Safety General Safety • Have the property or work area marked for buried • g019867 Figure 16 Specifications Note: Specifications and design are subject to • change without notice.
• Do not remove the fuel cap or fill the fuel tank • • • • • • Add the amount of fuel stabilizer/conditioner to fresh fuel as directed by the fuel-stabilizer manufacturer. while the engine is running or hot. Do not add or drain fuel in an enclosed space. Do not store the machine or fuel container where there is an open flame, spark, or pilot light, such as on a water heater or other appliance.
During Operation During Operation Safety • General Safety • • Keep your hands and feet away from moving teeth • • • • • • • • • • • • • • • or other parts. – Keep bystanders and pets away from the machine and never carry passengers. – Wear appropriate clothing, including eye protection, long pants, substantial slip-resistant footwear, and hearing protection. – Tie back long hair and do not wear loose clothing or loose jewelry. – Stop grinding if anyone enters the area.
Driving the Machine a safe distance between the machine and any hazard. Use the traction controls to move the machine. The farther you move the traction controls in any direction, the faster the machine moves in that direction. Release the traction controls to stop the machine. • If the machine starts to tip, let go of the controls and step away from the machine. • Do not park the machine on a hillside or slope. CAUTION Starting the Engine 1.
Operating Tips Grinding a Stump 1. 2. • Clean the area of trash, branches, and rocks Start the engine, raise the grinder, set the throttle lever to the FAST position, and move the machine to the stump to be ground. before operating to prevent equipment damage. • Always use full throttle (maximum engine speed) when grinding. Use the grinder control lever and the traction control to position the grinder to the side of the front of the stump, about 2 cm (1 inch) below the surface (Figure 19). 3.
• Keep all parts in good working condition and all 23). Refer to your local ordinances for trailer and tie-down requirements. hardware tightened. • Use care when loading or unloading the machine into a trailer or truck. Moving a Non-Functioning Machine Important: Do not tow or pull the machine without first opening the tow valves, or you will damage the hydraulic system. 1. Engage the parking brake and lower the grinder. 2. Shut off the engine and remove the key. 3. Remove the bottom shield. 4.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. CAUTION If you leave the key in the key switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the key switch and disconnect the wires from the spark plugs before you do any maintenance. Set the wires aside so that they do not accidentally contact the spark plugs.
Maintenance Service Interval Maintenance Procedure Every 400 hours • Change the hydraulic fluid. Every 500 hours • Replace and gap the spark plug(s). Every 600 hours • Replace the inner air filter. Every 1,500 hours • Replace all moving hydraulic hoses. Yearly or before storage • Check and adjust the track tension. • Touch up chipped paint. Important: Refer to your engine owner's manual for additional maintenance procedures.
3. Lubrication Loosen the 2 bolts securing the bottom shield sequentially until the shield is free (Figure 25). Greasing the Machine Service Interval: Before each use or daily (Grease it immediately after every washing.) Grease Type: General-purpose grease g019847 Figure 25 1. Bottom shield 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. 2. Shut off the engine and remove the key. 3. Clean the grease fittings with a rag. 4.
Engine Maintenance Engine Safety • Shut off the engine before checking the oil or adding oil to the crankcase. Do not change the engine governor setting or overspeed the engine. Keep your hands, feet, face, clothing, and other body parts away from the muffler and other hot surfaces. • • g020519 Servicing the Air Cleaner Figure 28 Service Interval: Every 150 hours—Inspect the primary filter. Every 250 hours—Replace the primary air filter (more often in dusty or sandy conditions).
Servicing the Engine Oil Note: Avoid knocking the filter into the side of the body. 6. Service Interval: Before each use or daily—Check the engine-oil level. Remove the safety filter only if you intend to replace it. Every 100 hours/Yearly (whichever comes first)—Change the engine oil (more often in dirty or dusty conditions). Important: Do not attempt to clean the safety filter. If the safety filter is dirty, then the primary filter is damaged. Replace both filters.
Changing the Engine Oil Note: Dispose of the used oil at a recycling center. 1. Start the engine and let it run 5 minutes. Note: This warms the oil so that it drains better. g319422 2. Park the machine so that the rear is slightly lower than the front to ensure the oil drains completely. 3. Engage the parking brake and lower the grinder. 4. Shut off the engine and remove the key. 5. Place a pan below the drain hose. Rotate the oil drain valve to allow oil to drain (Figure 32 and Figure 33).
Changing the Engine-Oil Filter 7. Dispose of the used oil at a recycling center 8. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 34). 1. Drain the oil from the engine; refer to Changing the Engine-Oil Filter (page 24). 2. Change the engine-oil filter (Figure 35). g247314 g194610 Figure 34 9. Start the engine and drive to a flat area. Check the oil level again.
Servicing the Spark Plug(s) Checking the Spark Plug(s) Service Interval: Every 500 hours/Yearly (whichever comes first) Important: Do not clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks. Make sure that the air gap between the center and side electrodes is correct before installing the spark plug.
Fuel System Maintenance 8. Wipe up any spilled fuel. Replacing the Low-pressure Fuel Filter DANGER 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. Service Interval: Every 150 hours/Yearly (whichever comes first) (more often in dirty or dusty conditions). Never install a dirty filter if it is removed from the fuel line. Refer to Fuel Safety (page 12) for a complete list of fuel related precautions.
Servicing the High-Pressure Fuel Filter Electrical System Maintenance Do not attempt to service the high-pressure fuel filter. The high-pressure filter is integrated within the fuel-pump module. The fuel filter and other components inside the fuel-pump module are not serviceable. Electrical System Safety • Disconnect the battery before repairing the machine. Disconnect the negative terminal first and the positive last. Connect the positive terminal first and the negative last.
Removing the Battery Charging the Battery 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. 2. Shut off the engine and remove the key. 3. Lift the black rubber cover on the negative cable. Disconnect the negative battery cable from the negative (-) battery terminal (Figure 41). WARNING Charging the battery produces gasses that can explode. Never smoke near the battery and keep sparks and flames away from battery.
Cleaning the Battery Replacing the Fuses Note: Keep the terminals and the entire battery case clean, because a dirty battery discharges slowly. There are 4 fuses in the electrical system. They are under the control panel on the left side (Figure 43). 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. 2. Shut off the engine and remove the key. 3. Remove the battery from the machine; Removing the Battery (page 28). 4.
Checking and Adjusting the Track Tension Drive System Maintenance Service Interval: After the first 50 hours Every 100 hours Servicing the Tracks To check the tension of each track, place 20.4 kg (45 lb) on the track midway between the front road wheel and the drive wheel. The track should flex no more than 0.6 to 1 cm (1/4 to 3/8 inch).
Replacing the Tracks Checking and Greasing the Road Wheels When the tracks are badly worn, replace them. 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. 2. Shut off the engine and remove the key. 3. Service Interval: Every 250 hours 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. Lift/support the side of the unit to be worked on so that the track is 7.6 to 10 cm (3 to 4 inches) off the ground. 2.
6. Check the grease under the cap and around the gasket (Figure 49). If it is dirty, gritty, or depleted, clean out all the grease, replace the gasket, and add new grease. Cooling System Maintenance 7. Ensure that the road wheel turns smoothly on the bearing. If it is frozen, contact your Authorized Service Dealer to replace the road wheel. Cleaning the Engine Screen 8. Place the greased road wheel cap over the bolt head (Figure 49). 9. Secure the road wheel cap with the snap ring (Figure 49). 10.
Belt Maintenance Controls System Maintenance Replacing the Hydrostatic Pump Drive Belt Adjusting the Traction-Control Alignment If the hydrostatic pump drive belt begins to squeal or is cracked, worn, or frayed, replace it. Contact your Authorized Service Dealer for a replacement belt. 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. 2. Shut off the engine and remove the key. 3. Raise the back of the machine and support it on jack stands.
g004191 Figure 53 1. Traction control 5. 2. Stem, bolt, and nut Adjust the traction control so that it rests flush against the reference bar when it is pulled straight back (Figure 53 and Figure 54). g011476 Figure 55 1. Traction rod E. 2. Jam nut Start the machine and set the throttle to about the 1/3 open position. WARNING When the machine is running, you could be caught and injured in moving parts or burned on hot surfaces. g004192 Figure 54 6.
Adjusting the Traction-Control Neutral Position Hydraulic System Maintenance If the machine creeps forward or backward when the traction control is in neutral and the machine is warm, you may need to adjust the return-to-neutral mechanism on the pumps; contact your Authorized Service Dealer.
Viscosity index, ASTM D2270 140 to 152 Pour Point, ASTM D97 -37 to -43°C (-35 to -46°F) Industry Standards API GL-4, AGCO Powerfluid 821 XL, Ford New Holland FNHA-2-C-201.00, Kubota UDT, John Deere J20C, Vickers 35VQ25 and Volvo WB-101/BM Note: Many hydraulic fluids are almost colorless, making it difficult to spot leaks. A red dye additive for the hydraulic system fluid is available in 20 ml (0.67 fl oz) bottles. One bottle is sufficient for 15 to 22 L (4 to 6 US gallons) of hydraulic fluid.
Changing the Hydraulic Fluid Grinder Maintenance Replacing the Teeth Service Interval: Every 400 hours/Yearly (whichever comes first) 1. Park the machine on a level surface, engage the parking brake, and lower the grinder. 2. Shut off the engine and remove the key. 3. Allow the machine to cool completely. 4. Remove the top cover. 5. Remove the hydraulic-tank filler cap and filter (Figure 58). 6. Place a drain pan capable of holding 38 L (10 US gallons) under the hydraulic tank. 7.
Cleaning Removing Debris from the Machine Service Interval: After each use Important: Operating the engine with blocked screens, dirty or plugged cooling fins, and/or cooling shrouds removed will result in engine damage from overheating. g019862 1. Park the machine on a level surface, engage the parking brake (if applicable), and lower the grinder. 2. Shut off the engine, remove the key, and wait for the engine to cool. 3. Wipe away debris from the air cleaner. 4.
Storage G. Storage Safety Important: Do not store fuel containing Dispose of fuel properly. Recycle as per local codes. stabilizer/conditioner longer than the duration recommended by the fuel-stabilizer manufacturer. • Allow the machine to cool before storing. • Do not store the machine or fuel near flames. 9. Storage Service Interval: Before each use or daily With the spark plug removed from the engine, pour 2 tablespoons of engine oil into the spark-plug hole. 10.
Troubleshooting Problem The starter does not crank. The engine does not start, starts hard, or fails to keep running. The engine loses power. Possible Cause Corrective Action 1. The battery is discharged. 1. Charge the battery or replace it. 2. The electrical connections are corroded or loose. 3. The relay or switch is damaged. 2. Check the electrical connections for good contact. 3. Contact your Authorized Service Dealer. 1. The fuel tank is empty. 1. Fill the tank with fresh fuel. 2.
Problem Possible Cause Corrective Action The hydraulic fluid overflows or is very hot. 1. The cooling fan is not functioning. 1. Check the fuse and replace it if necessary. The engine-indicator light is illuminated. 1. There is a fault in the engine electronic-control unit. 1. Refer to a Kohler engine dealer for diagnosis and service.
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