Form No. 3377-818 Rev A STX-38 Stump Grinder Model No. 23212—Serial No. 313000001 and Up Register at www.Toro.com.
Introduction WARNING This machine is designed to grind and remove tree stumps and surface roots. It is not intended to cut rock or any other material other than wood and the soil around a stump. CALIFORNIA Proposition 65 Warning Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage. You are responsible for operating the product properly and safely.
Servicing the Battery...............................................28 Replacing the Fuses ................................................30 Drive System Maintenance .........................................30 Servicing the Tracks................................................30 Cooling System Maintenance ......................................32 Servicing the Engine Oil Cooler ...............................32 Cleaning the Engine Screen......................................33 Belt Maintenance ............
Safety • Improper use or maintenance 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. Operation • Never run an engine in an enclosed area.
Maintenance and Storage Failure to maintain adequate distance from trees, walls, and other barriers may result in injury as the machine backs up during operation if the operator is not attentive to the surroundings. Only operate the unit in areas where there is sufficient clearance for the operator to safely maneuver the product.
– Battery acid is poisonous and can cause burns. Avoid contact with skin, eyes, and clothing. Protect your face, eyes, and clothing when working with a battery. – Battery gases can explode. Keep cigarettes, sparks and flames away from the battery. • Keep your body and hands away from pin hole leaks or nozzles that eject high pressure hydraulic fluid. Use cardboard or paper to find hydraulic leaks; never use your hands.
Slope Indicator G011841 Figure 3 This page may be copied for personal use. 1. To determine the maximum slope you can safely operate the machine on, refer to Slope Operation (page 5). Use the slope indicator to determine the degree of slope of hills before operating. Do not operate this machine on a slope greater than that specified in Slope Operation (page 5). Fold along the appropriate line to match the recommended slope. 2. Align this edge with a vertical surface, a tree, building, fence pole, etc. 3.
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. 93–6686 1. Hydraulic oil 2. Read the Operator's Manual. 93-9363 1. Parking brake 3. Unlocked 2. Locked 93-7321 1. Cutting/dismemberment hazard of hands and feet, rotating knives/blades—stay away from moving parts. 93-7814 100-4650 1. Entanglement hazard, belt—stay away from moving parts. 1.
115-4020 1. Turn right 3. Reverse 2. Forward 4. Turn left 121–4402 1. Push forward to lower the stump grinder 3. Pull back to raise the stump grinder 2. Move right to move the stump grinder to the right 4. Move left to move the stump grinder to the left 117–2718 Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystanders a safe distance from the battery. 2. No fire, open flame, or smoking. 7.
119-4606 1. Warning—read the Operator's Manual. 5. Explosion and electric shock hazard—do not dig in areas with buried utility lines; contact local power organizations before digging. 2. Cutting/dismemberment hazard; grinder—keep bystanders a safe distance from the machine; do not operate the grinder head while transporting the machine. 6. Tipping/crushing hazard—lower the cutter head when operating on slopes. 3. Warning—stay away from moving parts; wait for all moving parts to stop. 7.
Setup Product Overview Checking Fluid Levels Before starting the engine for the first time, check the engine oil and hydraulic fluid levels; refer to Checking the Engine Oil Level (page 16) and Checking the Hydraulic Fluid Level (page 36) for more information. Charging the Battery Charge the battery; refer to Charging the Battery (page 29) for more information.
Throttle Lever Traction Control Move the control forward to increase the engine speed and rearward to decrease speed. Choke Lever Before starting a cold engine, move the choke lever forward. After the engine starts, regulate the choke to keep the engine running smoothly. As soon as possible, move the choke lever all the way rearward. Figure 8 Note: A warm engine requires little or no choking. 1.
G008131 Figure 11 • To turn left, rotate the traction control counterclockwise (Figure 12). G008132 Figure 12 • To stop, release the traction control (Figure 8). Note: The farther you move the traction control in any direction, the faster the machine will move in that direction. Grinder Control Lever Operate the grinder using the grinder control lever as follows: • To start the grinder (Figure 13), press the red button on the top of the lever, then squeeze the trigger.
Figure 16 Figure 14 Lift/Lower Speed Control You can change the speed the grinder head raises and lowers using the lift/lower speed control, located under the right side of the control panel (Figure 17). Rotate the dial counter clockwise to increase the speed or clockwise to reduce the speed. • To lower the grinder, push the lever forward (Figure 15).
Operation Note: Determine the left and right sides of the machine from the normal operating position. Important: Before operating, check the fuel and oil level, and remove debris from the machine. Also, ensure that the area is clear of people and debris. You should also know and have marked the locations of all utility lines. Adding Fuel Use unleaded gasoline (87 pump octane minimum). Leaded, regular gasoline may be used if unleaded is not available.
DANGER In certain conditions during fueling, static electricity can be released causing a spark which can ignite the gasoline vapors. A fire or explosion from gasoline can burn you and others and can damage property. • Always place gasoline containers on the ground away from your vehicle before filling. • Do not fill gasoline 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.
4. Remove the key. Stopping the Machine To stop the machine, release the traction control, move the throttle lever to slow (turtle), lower the grinder to the ground, stop the engine, and remove the key. CAUTION A child or untrained bystander could attempt to operate the machine and be injured. Figure 19 1. Throttle lever Remove the key from the switch when leaving the machine, even if just for a few seconds. 3. Key 2. Choke lever Moving a Non-functioning Machine 2.
Grinding a Stump DANGER This product is capable of amputating hands and feet. • Stay in the operator's position while the grinder is running and keep away from the grinder. • Keep all bystanders a safe distance from the grinder. • Stop the grinder immediately if any people or animals enter the work area. Figure 21 WARNING Grinding a stump will throw wood chips, soil, and other debris into the air which could injure you or bystanders. 5. Lower the grinder about an inch and swing it back over the stump. 6.
• Always use full throttle (maximum engine speed) when grinding. • Cut the edges of the stump for more efficient grinding. Once your cutting swath is close to 1/4 of the wheel diameter (Figure 21), lift the grinder, move forward and begin cutting on the edge again. Figure 22 1. Front tie-down loop Figure 23 1. Rear tie-down loops Lifting the Machine You can lift the machine using the tie-down/lift loops as lift points (Figure 22 and Figure 23).
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the first 50 hours • Check and adjust the track tension. Before each use or daily • • • • • • Grease the machine. (grease immediately after every washing.) Check the engine oil level. Clean the engine screen. Check the condition of the teeth and rotate or replace any that are worn or damaged.
Premaintenance Procedures Important: The fasteners on the bottom shield are designed to remain on the cover after removal. Loosen both bolts a few turns so that the shield is loose but still attached, then go back and loosen them until the shield comes free. This will prevent you from accidentally stripping the bolts free of the retainers. Before opening any of the covers, stop the engine, remove the key, and allow the engine to cool. Removing the Front Cover 1.
Lubrication Greasing the Machine Service Interval: Before each use or daily (grease immediately after every washing.) Grease Type: General-purpose grease. 1. Lower the grinder and stop the engine. Remove the key. 2. Clean the grease fittings with a rag. 3. Connect a grease gun to each fitting (Figure 26 through Figure 28). Figure 28 4. Pump grease into the fittings until grease begins to ooze out of the bearings (approximately 3 pumps). 5. Wipe up any excess grease.
Engine Maintenance Installing the Filters Important: To prevent engine damage, always operate the engine with both air filters and cover installed. Servicing the Air Cleaner 1. If installing new filters, check each filter for shipping damage. Do not use a damaged filter. Service Interval: Every 150 hours—Inspect the primary filter. 2. If the inner filter is being replaced, carefully slide it into the filter body (Figure 29).
2. Park the machine so that the rear is slightly lower than the front to ensure the oil drains completely. WARNING Contact with hot surfaces may cause personal injury. 3. Lower the grinder and stop the engine. Remove the key. 4. Place a pan below the drain hose. Rotate the oil drain valve to allow oil to drain (Figure 32). Keep hands, feet, face, clothing and other body parts away from the muffler and other hot surfaces.
8. Start the engine and drive to a flat area. Check the oil level again. Changing the Engine Oil Filter Service Interval: Every 300 hours Note: Change the engine oil filter more frequently when operating conditions are extremely dusty or sandy. 1. Clean the area around the oil filter. 2. Drain the oil from the engine; refer to Changing the Engine Oil (page 24). 3. Change the engine oil filter as shown in Figure 34.
Servicing the Spark Plugs Service Interval: Every 600 hours—Replace and gap the spark plugs. Make sure the air gap between the center and side electrodes is correct before installing the spark plugs. Use a spark plug wrench for removing and installing the spark plugs and a gapping tool/feeler gauge to check and adjust the air gap. Install new spark plugs at the indicated interval. Figure 37 Type : Champion® XC10YC or equivalent Air Gap: 0.030 inch (0.76 mm) Removing the Spark Plugs 1.
Fuel System Maintenance 7. Install the fuel line onto the fuel shut-off valve. Slide the hose clamp close to the valve to secure the fuel line. 8. Wipe up any spilled fuel. Draining the Fuel Tank Replacing the Fuel Filter Service Interval: Every 150 hours/Yearly (whichever comes first) (more often in dirty or dusty conditions). DANGER In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property.
Electrical System Maintenance WARNING Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable. • Always Reconnect the positive (red) battery cable before reconnecting the negative (black) cable. Servicing the Battery Service Interval: Every 25 hours—Check the battery electrolyte level.
Important: Do not overfill the battery because electrolyte (sulfuric acid) can cause severe corrosion and damage to the chassis. 4. Then install the negative battery cable and ground wire to the negative (-) battery terminal with a nut, washer and bolt (Figure 40). Slide the rubber cover over the post. 5. Wait five to ten minutes after filling the battery cells. Add distilled water, if necessary, until the electrolyte level is up to the Upper line (Figure 41) on the battery case.
Replacing the Fuses Drive System Maintenance There are 4 fuses in the electrical system. They are under the control panel on the left side (Figure 43). 30 25 20 15 Start Circuit Not used Cooler fan Circuit Headlight (optional) amp amp amp amp Servicing the Tracks Cleaning the Tracks Service Interval: After each use Check the tracks for excessive wear and clean them periodically. If the tracks are worn, replace them. 1. Lower the grinder. 2.
Figure 45 Figure 47 1. Stop the machine in on a level surface. 1. Tensioning wheel 2. Stop the engine, lower the grinder, remove the key, and wait for all moving parts to stop before leaving the operating position. 6. Begin removing the track at the top of the tensioning wheel, peeling it off of the wheel while rotating the track forwards. 3. Loosen the jam nut on the track tensioning bolt (Figure 46). 7. When the track is off of the tensioning wheel, remove it from the machine (Figure 47). 8.
Cooling System Maintenance Servicing the Engine Oil Cooler Service Interval: Every 150 hours 1. Lower the grinder. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. Figure 48 1. Road wheels 3. To access and service the oil cooler, remove the top mounting screw and loosen the two side screws. 3. Track guide bolts (only two shown) 4. Remove the shroud. 2. Lower track guide 5. Clean the engine oil cooler with compressed air (Figure 50). 3.
Belt Maintenance Cleaning the Engine Screen Service Interval: Before each use or daily Replacing the Pump Drive Belt Before each use remove any build-up of grass, dirt or other debris from the engine screen. This will help ensure adequate cooling and correct engine speed and will reduce the possibility of overheating and mechanical damage to the engine. If the pump drive belt begins to squeal or is cracked, worn, or frayed, replace it. Contact you Authorized Service Dealer for a replacement belt. 1.
Controls System Maintenance 5. Adjust the traction control so that it rests flush against the reference bar when it is pulled straight back (Figure 53 and Figure 54). The factory adjusts the controls before shipping the machine. However, after many hours of use, you may need to adjust the traction control alignment, the neutral position of the traction control, and the tracking of the traction control in the full forward position.
4. If the machine veers to the right, loosen the left jam nut and adjust the tracking set screw on the front of the traction control (Figure 56). WARNING When the machine is running, you could be caught and injured in moving parts or burned on hot surfaces. Stay away from pinch points, moving parts, and hot surfaces when adjusting the running machine. F. Have a helper hold the traction control tight to the reference bar in reverse. G.
Hydraulic System Maintenance 7. Install the cap and filter on the filler neck and torque bolt on top to 21 to 25 N-m (200 to 240 inch-lb). 8. Install the cover plate; refer to Installing the Front Cover (page 21). Checking the Hydraulic Fluid Level Replacing the Hydraulic Filter Service Interval: Every 200 hours Service Interval: Every 25 hours 1. Position machine on a level surface. Hydraulic System Capacity: 38 L (10 US gallons) 2. Lower the grinder. Use Toro Premium All Season Hydraulic Oil. 3.
8. Remove the hydraulic tank drain plug and allow the fluid to drain into the pan (Figure 60). WARNING Hydraulic fluid escaping under pressure can penetrate skin and cause injury. Fluid injected into the skin must be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may result. • Keep your body and hands away from pin hole leaks or nozzles that eject high pressure hydraulic fluid. • Use cardboard or paper to find hydraulic leaks, never use your hands.
Grinder Maintenance Cleaning Replacing the Teeth Removing Debris from the Machine Service Interval: Before each use or daily—Check the condition of the teeth and rotate or replace any that are worn or damaged. Important: Operating the engine with blocked screens, dirty or plugged cooling fins, and/or cooling shrouds removed, will result in engine damage from overheating. Due to the high amount of wear placed on the teeth, you will need to rotate and replace them periodically. 1. Lower the grinder. 2.
Storage 12. Check and adjust the track tension; refer to Checking and Adjusting the Track Tension (page 30). 1. Lower the grinder. 13. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 14. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 3.
Troubleshooting Problem The starter does not crank. The engine will not start, starts hard, or fails to keep running. Engine loses power. Possible Cause 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 fuel tank with gasoline. 2. 3. 4. 5. 2. 3. 4. 5.
Schematics g020556 Electrical Schematic (Rev.
g020557 Hydraulic Schematic (Rev.
Notes: 43
Toro Compact Utility Equipment Warranty A One-Year Limited Warranty Conditions and Products Covered The Toro® Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly warrant your Toro Compact Utility Equipment (“Product”) to be free from defects in materials or workmanship.
