Form No. 3429-767 Rev A STX-26 Stump Grinder Model No. 23208—Serial No. 404320000 and Up Model No. 23208G—Serial No. 404320000 and Up Register at www.Toro.com.
Introduction This product complies with all relevant European directives; for details, please see the separate product specific Declaration of Conformity (DOC) sheet. 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.
Drive System Maintenance .................................. 31 Servicing the Tracks ......................................... 31 Belt Maintenance ................................................ 34 Replacing the Pump-Drive Belt ......................... 34 Controls System Maintenance ............................. 35 Adjusting the Traction-Control Alignment...................................................... 35 Hydraulic System Maintenance ........................... 37 Hydraulic Fluid Specifications......
Safety • Evaluate the terrain to determine what accessories 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. • • DANGER There may be buried power, gas, and/or telephone lines in the work area.
• Ensure that all the drives are in neutral and the • • • • • • • • • • • • • • parking brake is engaged (if applicable) before starting the engine. Start the engine only from the operator's position. Slow down and use extra care on hillsides. Ensure to travel in the recommended direction on hillsides. Turf conditions can affect the stability of the machine. Slow down and use caution when making turns, crossing roads and sidewalks, and when changing directions on slopes.
Safety and Instructional Decals • Use jack stands to support the components when required. • Carefully release pressure from components with stored energy. 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. • Keep your hands and feet away from the moving parts. If possible, do not make adjustments with the engine running.
decal93-7814 93-7814 1. Entanglement hazard, belt—stay away from moving parts; keep all guards and shields in place. decal93-9084 decal119-4560 93-9084 119-4560 1. Lift point/Tie-down point 1. Ignition key 2. Engine—start 3. Engine—run 4. Engine—stop 5. Fast 6. Engine speed 7. 8. 9. 10. Slow On/Closed Choke Off/Open 11.
decal133-8062 133-8062 decal119-4561 119-4561 1. Push forward to lower the stump grinder. 2. Move right to move the stump grinder to the right. 3. Pull back to raise the stump grinder. 4. Move left to move the stump grinder to the left. 5. Read the Operator's Manual before operating the cutter; engage the side lever and top button of the joystick to start the cutter blade; continue engaging the side lever to maintain cutter rotation. 6.
decal119-4606 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 away 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.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 Description Use Qty. Grinder control lever Jam nut 1 1 Install the grinder control lever. No parts required – Check the fluid levels. No parts required – Charge the battery. 1 Installing the Grinder Control Lever Parts needed for this procedure: 1 Grinder control lever 1 Jam nut 2. Thread the grinder control lever into the receptacle on the control panel (Figure 3). 3.
Control Panel Product Overview g025098 Figure 5 g013171 Figure 4 1. Reverse safety plate 3. Engine 2. Control panel 4. Battery 5. Tie-down/lift 7. Chip point shield 1. Key switch 5. Traction control 2. Throttle lever 3. Choke lever 6. Reference bar 7. Grinder control/hydraulic-lift lever 4. Hour meter 6. Track 8. Grinder Key Switch The key switch, used to start and shut off the engine, has 3 positions: OFF, RUN, and START . Refer to Starting the Engine (page 16).
Reference Bar • To turn right, rotate the traction control clockwise (Figure 9). When driving the machine, use the reference bar as a handle and a leverage point for controlling the machine. To ensure smooth, controlled operation, do not take both hands off the reference bar while operating the machine. Traction Control g008131 Figure 9 • To turn left, rotate the traction control counterclockwise (Figure 10). g008128 Figure 6 1. Reference bar 2.
Grinder Control/Hydraulic-Lift Lever • To raise the grinder, pull the lever rearward (Figure 12). Operate the grinder using the grinder control lever as follows: • To start the grinder (Figure 11), squeeze the trigger and then press the red button on the top of the lever. Once the grinder has started, you can release the red button. • To stop the grinder (Figure 11), release the trigger for more than a half second. Note: If you are operating the grinder and momentarily release the trigger (i.e.
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. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operator position.
Recommended Fuel DANGER • For best results, use only clean, fresh (less than In certain conditions during fueling, static electricity can be released, causing a spark that can ignite the fuel vapors. A fire or explosion from fuel can burn you and others and can damage property. 30 days old), unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method). • Ethanol: Gasoline with up to 10% ethanol (gasohol) or 15% MTBE (methyl tertiary butyl ether) by volume is acceptable.
Filling the Fuel Tank Starting the Engine 1. Park the machine on a level surface, engage the parking brake (if applicable), and lower the hydraulic lift. 2. Shut off the engine, remove the key, and allow the engine to cool. 3. Clean around the fuel-tank cap and remove it (Figure 15). 1. Move the throttle lever midway between the SLOW and FAST positions (Figure 16). g013178 Figure 16 1. Throttle lever 3. Key 2. Choke lever 2. Move the choke lever to the ON position (Figure 16).
Driving the Machine Grinding a Stump 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. DANGER This machine is capable of amputating hands and feet. • Always wear substantial, slip-resistant footwear. CAUTION When reversing, you may back into stationary objects or over bystanders and cause serious personal injury or death.
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 hydraulic lift. 2. Shut off the engine and remove the key. 3. Remove the bottom shield. 4. Using a wrench, turn the tow valves on the hydraulic pumps twice counter-clockwise (Figure 18). g013420 Figure 17 5. Move the machine forward a few centimeters (inches) and repeat step 4(Figure 17). 6.
Operating Tips 20). Refer to your local ordinances for trailer and tie-down requirements. • Clean the area of trash, branches, and rocks before operating to prevent equipment damage. • 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, lower the grinder and begin cutting on the edge again. g013180 Figure 19 1.
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 8 hours • Change the engine oil. 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. Check the condition of and clean the tracks.
Pre-Maintenance Procedures 6. To install the cover plate before operating the machine, slide the plate into place and secure it with the 3 bolts you loosened previously (Figure 22). Important: The fasteners on the covers of this machine are designed to remain on the cover after removal. Loosen all fasteners on each cover a few turns so that the cover is loose but still attached, then go back and loosen them until the cover comes free.
Lubrication Greasing the Machine Service Interval: Before each use or daily (Grease immediately after every washing.) Grease Type: General-purpose grease 1. Park the machine on a level surface and lower the hydraulic lift. 2. Shut off the engine and remove the key. 3. Clean the grease fittings with a rag. 4. Connect a grease gun to each fitting (Figure 24 and Figure 25). 5. Pump grease into the fittings until grease begins to ooze out of the bearings (approximately 3 pumps). 6.
Engine Maintenance Servicing the Primary Filter Servicing the Air Cleaner Inspect the primary filter for damage by looking into the filter while shining a bright light on the outside of the filter. Service Interval: Every 250 hours—Replace the primary air filter and check the condition of the safety filter (more often in dirty or dusty conditions). Note: Holes in the filter appear as bright spots. If the filter is dirty, bent, or damaged, replace it. Do not clean the primary filter.
Servicing the Engine Oil Service Interval: After the first 8 hours—Change the engine oil. Before each use or daily—Check the engine-oil level. g242254 Every 100 hours—Change the engine oil. Every 200 hours—Change the engine-oil filter. Engine-Oil Specifications Note: Change the oil more frequently when the operating conditions are extremely dusty or sandy. Oil Type: Detergent oil (API service SF, SG, SH, or SJ) Crankcase Capacity: 2.1 L (71 fl oz) with the filter removed; 1.
Changing the Engine Oil Note: Dispose of the used oil at a recycling center. 1. Start the engine and let it run for 5 minutes. Note: This warms the oil so that it drains better. 2. Park the machine on a level surface, engage the parking brake (if applicable), and lower the hydraulic lift. 3. Shut off the engine and remove the key. 4. Change the oil as shown in (Figure 29). g242255 g194610 Figure 30 g027734 Figure 29 5.
Changing the Engine-Oil Filter Servicing the Spark Plug(s) 1. Drain the oil from the engine; refer to Changing the Engine Oil (page 25). Service Interval: Every 100 hours 2. Change the engine-oil filter (Figure 31). Make sure that the air gap between the center and side electrodes is correct before installing the spark plug(s). Use a spark plug wrench for removing and installing the spark plug(s) and a gapping tool/feeler gauge to check and adjust the air gap.
Checking the Spark Plug(s) Fuel System Maintenance 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. Draining the Fuel Tank If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means the air cleaner is dirty. DANGER In certain conditions, fuel is extremely flammable and highly explosive.
Replacing the Fuel Filter Electrical System Maintenance Service Interval: Every 200 hours 1. Park the machine on a level surface, engage the parking brake, and lower the hydraulic lift. 2. Shut off the engine and remove the key. Servicing the Battery Service Interval: Every 25 hours—Check the battery electrolyte level. Always keep the battery clean and fully charged. Use a paper towel to clean the battery case.
2. Charge the battery at a rate of 3 to 4 A for 4 to 8 hours (Figure 38). Do not overcharge the battery. g003792 Figure 38 1. Positive battery post 3. Red (+) charger lead 2. Negative battery post 4. Black (-) charger lead 3. g008335 Figure 37 1. Negative cable 7. Positive cable 2. Nut (1/4 inch) 8. Battery hold down plate 3. Nut (5/16 inch) 9. Washer 4. Bolt 5.
Cleaning the Battery Note: Keep the terminals and the entire battery case clean, because a dirty battery discharges slowly. g000537 Figure 39 1. Vent caps 3. Lower line 2. Upper line 4. If the electrolyte is low, add the required amount of distilled water; refer to Adding Water to the Battery (page 30). Adding Water to the Battery The best time to add distilled water to the battery is just before you operate the machine. This lets the water mix thoroughly with the electrolyte solution. 1.
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 40). 30 25 20 15 Start circuit Charge circuit Cooler fan circuit Headlight (optional) A A A A Servicing the Tracks Cleaning the Tracks Service Interval: Before each use or daily Check the tracks for excessive wear and clean them periodically. If the tracks are worn, replace them. 1.
Checking and Adjusting the Track Tension is applied to the track span. Adjust the torque on the tensioning bolt as needed. Service Interval: After the first 50 hours Every 100 hours 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). If it does, adjust the track tension using the following procedure: 6. Tighten the jam nut. 7.
Checking and Greasing the Road Wheels Service Interval: Every 250 hours g242269 1. Park the machine on a level surface, engage the parking brake, and lower the hydraulic lift. 2. Shut off the engine and remove the key. 3. Remove the tracks; refer to Replacing the Tracks (page 32). 4. Remove the snap ring and cap from a road wheel (Figure 46). Figure 45 1. Snap ring 4. Gasket 2. Cap 5. Wheel with bearings 3. Bolt 8. When the track is off the road wheel, remove it from the machine (Figure 44).
Belt Maintenance Replacing the Pump-Drive Belt If the 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 hydraulic lift. 2. Shut off the engine and remove the key. 3. Raise the back of the machine and support it on jack stands. 4. Remove the bottom shield; refer to Removing the Bottom Shield (page 21). 5.
Controls System Maintenance Adjusting the Traction-Control Alignment The factory adjusts the traction 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. g004191 Figure 49 1. Traction control 5. Important: To adjust the controls properly, complete each procedure in the order listed. 2.
Adjusting the Traction-Control Neutral Position 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. Adjusting the Traction-Control Forward Position If the machine does not drive straight when you hold the traction control forward against the reference bar, complete the following procedure: g011476 Figure 51 1. Traction rod E. 2.
Hydraulic System Maintenance 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 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; otherwise, gangrene may result.
g007839 Figure 54 1. Filler-neck cap 2. Hydraulic-fluid filter 6. If the level is low, add fluid until it is visible in the glass bubble. 7. Install the cap and filter on the filler neck and torque bolt on top to 13 to 15.5 N∙m (110 to 140 in-lb). 8. Install the cover plate; refer to Removing the Cover Plate (page 21). g007840 Figure 55 1. Hose 2. Hydraulic-tank fitting Changing the Hydraulic Fluid 3. Hose clamp 8. Service Interval: Every 400 hours/Yearly (whichever comes first) 1.
Grinder Maintenance Replacing the Teeth Service Interval: Before each use or daily—Check the condition of the teeth; rotate or replace any that are worn or damaged and torque the nuts for all teeth. Due to the high amount of wear placed on the teeth, you need to rotate and replace them periodically (Figure 56). g019862 Figure 57 1. Nut 2. Tooth holder g034325 Figure 56 1. Sharp tooth 2.
Cleaning Storage Removing Debris from the Machine Service Interval: After each use 1. Park the machine on a level surface, engage the parking brake, and lower the hydraulic lift. 2. Shut off the engine, remove the key, and wait for the engine to cool. 3. Remove dirt and grime from the external parts of the entire machine, especially the engine. Clean dirt and chaff from the outside of the engine cylinder head fins and blower housing.
9. With the spark plug removed from the engine, pour 2 tablespoons of engine oil into the spark-plug hole. 10. Place a rag over the spark-plug hole to catch any oil spray, then use the starter or recoil handle to crank the engine and distribute the oil inside the cylinder. 11. Install the spark plug, but do not install the wire on the spark plug. 12. Charge the battery; refer to Charging the Battery (page 29). 13.
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. 3. 4. 5.
Schematics g013418 Electrical Schematic (Rev.
g025169 Hydraulic Schematic (Rev.
Notes:
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