TX 550 Compact Tool Carrier

Use only clean, fresh diesel fuel or biodiesel fuels with low (<500 ppm) or ultra low (<15 ppm) sulfur content. The minimum cetane rating should be 40. Purchase fuel in quantities that you can use within 180 days to ensure fuel freshness.

Use summer-grade diesel fuel (No. 2-D) at temperatures above -7°C (20°F) and winter grade (No. 1-D or No. 1-D/2-D blend) below that temperature. Using winter-grade fuel at lower temperatures provides lower flash point and cold flow characteristics, which eases starting and reduces fuel filter plugging.

Using summer-grade fuel above -7°C (20°F) contributes toward longer fuel pump life and increased power compared to winter-grade fuel.

Important: Do not use kerosene or gasoline instead of diesel fuel. Failure to observe this caution will damage the engine.

This machine can also use a biodiesel blended fuel of up to B20 (20% biodiesel, 80% petrodiesel). The petrodiesel portion should be low or ultra low sulfur. Observe the following precautions:

• The biodiesel portion of the fuel must meet specification ASTM D6751 or EN14214.

• The blended fuel composition should meet ASTM D975 or EN590.

• Painted surfaces may be damaged by biodiesel blends.

• Use B5 (biodiesel content of 5%) or lesser blends in cold weather.

• Monitor seals, hoses, gaskets in contact with fuel as they may degrade over time.

• Fuel filter plugging may occur for a time after converting to biodiesel blends.

• Contact your distributor for more information on biodiesel.

Fuel tank capacity: 23 L (6 US gallons)

1. Park the machine on a level surface, engage the parking brake (if equipped), and lower the loader arms.

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 16

   1. Fuel-tank cap

4. Fill the tank to about 2.5 cm (1 inch) below the top of the tank, not the filler neck, with fuel.

   Important: This space in the tank allows fuel to expand. Do not fill the fuel tank completely full.

5. Install the fuel-tank cap securely, turning it until it clicks.

6. Wipe up any spilled fuel.

Important: Use only Toro-approved attachments. Attachments can change the stability and the operating characteristics of the machine. The warranty of the machine may be voided if you use the machine with unapproved attachments.

Important: Before installing the attachment, ensure that the mount plates are free of any dirt or debris and that the pins move freely. If the pins do not move freely, grease them.

1. Position the attachment on a level surface with enough space behind it to accommodate the machine.

2. Start the engine.

3. Tilt the attachment mount plate forward.

4. Position the mount plate into the upper lip of the attachment receiver plate.

   

   Figure 17

   1. Mount plate
   2. Receiver plate

5. Raise the loader arms while tilting back the mount plate at the same time.

   Important: Raise the attachment enough to clear the ground and tilt the mount plate all the way back.

6. Shut off the engine and remove the key.

7. Engage the quick-attach pins, ensuring that they are fully seated in the mount plate.

   Important: If the pins do not rotate to the engaged position, the mount plate is not fully aligned with the holes in the attachment receiver plate. Check the receiver plate and clean it if necessary.

   Warning

   If you do not fully seat the quick-attach pins through the attachment mount plate, the attachment could fall off the machine, crushing you or bystanders.

   Ensure that the quick-attach pins are fully seated in the attachment mount plate.

   

   Figure 18

   1. Quick-attach pins (engaged position)
   2. Disengaged position
   3. Engaged position

If the attachment requires hydraulics for operation, connect the hydraulic hoses as follows:

1. Shut off the engine and remove the key.

2. Move the auxiliary-hydraulics lever forward, backward, and back to the NEUTRAL position to relieve pressure at the hydraulic couplers.

3. Remove the protective covers from the hydraulic connectors on the machine.

4. Ensure that all foreign matter is cleaned from the hydraulic connectors.

5. Push the attachment male connector into the female connector on the machine.

   Note: When you connect the attachment male connector first, you relieve any pressure built up in the attachment.

6. Push the attachment female connector onto the male connector on the machine.

7. Confirm that the connection is secure by pulling on the hoses.

1. Park the machine on a level surface.

2. Lower the attachment to the ground.

3. Shut off the engine and remove the key.

4. Disengage the quick-attach pins by turning them to the outside.

5. If the attachment uses hydraulics, move the auxiliary-hydraulics lever forward, backward, and back to the NEUTRAL position to relieve pressure at the hydraulic couplers.

6. If the attachment uses hydraulics, slide the collars back on the hydraulic couplers and disconnect them.

   Important: Connect the attachment hoses together to prevent hydraulic system contamination during storage.

7. Install the protective covers onto the hydraulic couplers on the machine.

8. Start the engine, tilt the mount plate forward, and back the machine away from the attachment.

1. If using a trailer, connect it to the towing vehicle and connect the safety chains.

2. If applicable, connect the trailer brakes.

3. Lower the ramp(s).

4. Lower the loader arms.

5. Load the machine onto the trailer with the heavy end up the ramp, carrying loads low, as shown.

   • If the machine has a full load-bearing attachment (e.g., bucket) or a non-load-bearing attachment (e.g., trencher), drive the machine forward up the ramp.

   • If the machine has an empty load-bearing attachment or no attachment, back the machine up the ramp.

   

   Figure 22

   1. Machine with full attachment or non-load-bearing attachment—drive the machine forward up the ramp(s).
   2. Machine with empty or no attachment—back the machine up the ramp(s).

6. Lower the loader arms all the way down.

7. Engage the parking brake, shut off the engine, and remove the key.

8. Use the metal tie-down loops on the machine to securely fasten the machine to the trailer or truck with straps, chains, cable, or ropes. Refer to local regulations for tie-down requirements.

   

   Figure 23

1. Lower the ramp(s).

2. Unload the machine from the trailer with the heavy end up the ramp, carrying loads low.

   • If the machine has a full load-bearing attachment (e.g., bucket) or a non-load-bearing attachment (e.g., trencher), back it down the ramp.

   • If the machine has an empty load-bearing attachment or no attachment, drive it forward down the ramp.

   

   Figure 24

   1. Machine with full attachment or non-load-bearing attachment—back the machine down the ramp(s).
   2. Machine with empty or no attachment—drive the machine forward down the ramp(s).

1. Remove the attachment.

2. Raise the loader arms to the fully raised position.

3. Shut off the engine and remove the key.

4. Remove the lynch pin securing the cylinder lock to the loader arm.

   

   Figure 26

   1. Cylinder lock
   2. Lift cylinder
   3. Lynch pin

5. Lower the cylinder lock over the cylinder rod and secure it with the lynch pin.

6. Slowly lower the loader arms until the cylinder lock contacts the cylinder body and rod end.

7. Secure the loader-valve lock; refer to Loader-Valve Lock.

Important: Remove the cylinder lock from the rod and fully secure it in the storage position before operating the machine.

1. Start the engine.

2. Raise the loader arms to the fully raised position.

3. Shut off the engine and remove the key.

4. Remove the lynch pin securing the cylinder lock.

5. Rotate the cylinder lock up to the loader arm and secure it with the lynch pin.

6. Lower the loader arms.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine, remove the key, and allow the engine to cool.

3. Unlock the hood using the latch key and press the button to release the latch.

   

   Figure 27

4. Lift open the hood.

1. Lift up on the tab securing the prop rod.

   

   Figure 28

   1. Prop-rod tab

2. Lower the hood and press down the latch to secure the hood.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine, remove the key, and allow the engine to cool.

3. Unscrew the 2 hand knobs securing the rear-access cover to the machine.

   

   Figure 29

   1. Hand knob (2)

4. Tilt the rear-access cover down and remove it to access the internal components.

1. Move the rear-access cover in place over the back of the machine; ensure that the tabs line up in the slots.

2. Push the access cover forward, lining up the hand-knob screws with the threaded holes in the machine.

3. Screw the hand knobs tight to secure the rear-access cover in place.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine, remove the key, and allow the engine to cool.

3. Open the hood.

4. Slide the side screens up and out of the slots in the front screen and frame.

   

   Figure 30

   1. Side screen

Slide the side screens into place in the slots in the front screen and frame.

Important: Replace the primary air-cleaner filter only when the service indicator shows red. Changing the air filter before it is necessary only increases the chance of dirt entering the engine when you remove the filter.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine and remove the key.

3. Open the hood.

4. Check the air-cleaner body for damage that could cause an air leak. Check the whole intake system for leaks, damage, or loose hose clamps. Replace or repair any damaged components.

5. Release the latches on the air cleaner and pull the air-cleaner cover off the air-cleaner body.

   Important: Do not remove the air filter.

   

   Figure 32

   1. Dust cap
   2. Air-cleaner cover
   3. Air filter
   4. Air-cleaner body

6. Squeeze the dust cap sides to open it and knock the dust out.

7. Clean the inside of the cover with compressed air that is under 205 kPa (30 psi).

   Important: Do not use compressed air on the air-cleaner body.

8. Check the service indicator.

   • If the service indicator is clear, install the cover with the dust cap oriented downward and secure the latches.

   • If the service indicator is red, replace the air filter.

   

   Figure 33

9. Install the air-cleaner cover with the dust cap oriented downward and secure the latches.

10. Close the hood.

1. Gently slide the filter out of the air-cleaner body.

   Note: Avoid knocking the filter into the side of the body.

   Important: Do not attempt to clean the filter.

   

   Figure 34

   1. Air-cleaner cover
   2. Air filter
   3. Air-cleaner body

2. Inspect the new filter for tears, an oily film, or damage to the rubber seal. Look into the filter while shining a bright light on the outside of the filter; holes in the filter appear as bright spots.

   If the filter is damaged, do not use it.

3. Carefully install the filter.

   Note: Ensure that each filter is fully seated by pushing on the outer rim of the filter while installing it.

   Important: Do not press on the soft inside area of the filter.

4. Install the air-cleaner cover with the dust cap oriented downward and secure the latches.

5. Close the hood.

Oil Type: Detergent diesel engine oil (API service CH-4 or higher)

Crankcase Capacity: with filter, 3.6 L (3.84 US qt)

Viscosity: See table below

Figure 35

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine, remove the key, and allow the engine to cool.

3. Open the hood.

4. Clean the area around the oil dipstick and oil-fill cap.

   

   Figure 36

   1. Oil-fill cap
   2. Oil dipstick

5. Check the oil and add additional oil as needed.

   Important: Do not overfill the crankcase with oil; if the oil in the crankcase is too high and you run the engine, you may damage the engine.

   

   Figure 37

6. Close the hood.

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 so that the drain side is slightly lower than the opposite side to ensure that the oil drains completely.

3. Lower the loader arms, engage the parking brake, shut off the engine, and remove the key.

4. Drain the oil beneath the machine.

   Caution

   Components will be hot if the machine has been running. Contact with hot parts could result in minor or moderate injury.

   Use care to avoid touching hot components while changing the oil and/or filter.

   

   Figure 38

5. Torque the drain plug to 46 to 56 N∙m (34 to 42 ft-lb).

6. Open the hood.

7. Remove the fill cap and slowly pour approximately 80% of the specified amount of oil in through the valve cover.

8. Check the oil level.

9. Slowly add additional oil to bring the level to the upper hole on the dipstick.

10. Replace the fill cap.

11. Close the hood.

Note: Dispose of the used oil at a certified recycling center.

1. Drain the oil from the engine; refer to Changing the Engine Oil.

2. When the oil has drained completely, install the drain plug and torque it to 46 to 56 N∙m (34 to 42 ft-lb).

   Note: Dispose of the used oil at a certified recycling center.

3. Remove the left side screen.

4. Place a shallow pan or rag under the filter to catch oil.

5. Change the oil filter.

   

   Figure 39

6. Remove the fill cap and slowly pour approximately 80% of the specified amount of oil in through the valve cover.

7. Check the oil level.

8. Slowly add additional oil to bring the level to the upper hole on the dipstick.

9. Replace the fill cap.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine and remove the key.

3. Open the rear-access cover.

4. Remove the battery-access panel.

   

   Figure 52

5. Remove the bolt, washer, and bar securing the battery.

   

   Figure 53

   1. Positive cable
   2. Bar
   3. Bolt and washer
   4. Negative cable
   5. Battery

6. Disconnect the negative (black) ground cable from the battery post. Retain the fasteners.

7. Slide the rubber cover off the positive (red) cable.

8. Disconnect the positive (red) cable from the battery post. Retain the fasteners.

9. Lift the battery out of the chassis.

Important: Always keep the battery fully charged (1.265 specific gravity). This is especially important to prevent battery damage when the temperature is below 0°C (32°F).

1. Remove the battery from the machine; refer to Removing the Battery.

2. Charge the battery for 10 to 15 minutes at 25 to 30 A or 30 minutes at 4 to 6 A. Do not overcharge the battery.

   

   Figure 54

   1. Positive battery post
   2. Negative battery post
   3. Red (+) charger lead
   4. Black (-) charger lead

3. When the battery is fully charged, unplug the charger from the electrical outlet, then disconnect the charger leads from the battery posts.

Note: Keep the terminals and the entire battery case clean to help extend battery life.

1. Park the machine on a level surface, engage the parking brake (if equipped), and lower the loader arms.

2. Shut off the engine and remove the key.

3. Remove the battery from the machine; Removing the Battery.

4. Wash the entire case with a solution of baking soda and water.

5. Rinse the battery with clear water.

6. Coat the battery posts and cable connectors with Grafo 112X (skin-over) grease or petroleum jelly to prevent corrosion.

7. Install the battery; refer to Installing the Battery.

1. Using the fasteners previously removed, install the positive (red) battery cable to the positive (+) battery terminal.

   

   Figure 55

   1. Positive cable
   2. Bar
   3. Bolt and washer
   4. Negative cable
   5. Battery

2. Slide the red terminal boot onto the positive battery post.

3. Using the fasteners previously removed, install the negative (black) battery cable to the negative (-) battery terminal.

4. Secure the battery using the bar, bolt, and washer.

   Important: Ensure that the battery cables do not contact any sharp edges or each other.

5. Install the battery-access panel.

   

   Figure 56

6. Close the rear-access cover; refer to Closing the Rear-Access Cover.

The original battery is maintenance-free and does not require service. For servicing a replacement battery, refer to the battery manufacturer’s instructions.

1. Park the machine on a level surface and engage the parking brake.

2. With the bucket installed and pointing down, lower it into the ground so that the front of the traction unit lifts off the ground a few centimeters (inches).

   

   Figure 60

   1. Drive sprocket
   2. Road wheels (5)
   3. Track
   4. Tension wheel

3. Shut off the engine and remove the key.

4. Using a water hose or pressure washer, remove dirt from each track system.

Important: Ensure that you use high-pressure water to wash only the track area. Do not use a high-pressure washer to clean the rest of the machine. Do not use high-pressure water between the drive sprocket and the machine or you may damage the motor seals. High-pressure washing can damage the electrical system and hydraulic valves or deplete grease.

Important: Ensure that you fully clean the road wheels, the tension wheel, and the drive sprocket. The road wheels should rotate freely when clean.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine and remove the key.

3. Remove the cover.

   

   Figure 61

4. Verify that the distance between the tension nut and the back of the tension tube is 7 cm (2-3/4 inches).

   • If the distance is incorrect, continue this procedure.

   • If the distance is correct, proceed to step 10.

   

   Figure 62

5. Lift/support the side of the unit to be worked on so that the track is off the ground.

6. Remove the locking bolt, spacer, and nut.

   

   Figure 63

   1. Nut
   2. Spacer
   3. Locking bolt

7. Using a 1/2-inch drive ratchet, turn the tensioning screw counterclockwise until the distance between the tension nut and the back of the tension tube is 7 cm (2-3/4 inches).

   

   Figure 64

8. Align the closest notch in the tension screw to the locking bolt hole and secure the screw with the locking bolt, spacer, and nut.

9. Lower the traction unit to the ground.

10. Install the cover.

When the tracks are badly worn, replace them.

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine and remove the key.

3. Lift/support the side of the unit to be worked on so that the track is 8 to 10 cm (3 to 4 inches) off the ground.

4. Remove the locking bolt, spacer, and nut.

   

   Figure 65

   1. Nut
   2. Spacer
   3. Locking bolt

5. Using a 1/2-inch drive ratchet, release the drive tension by turning the tensioning screw clockwise.

   

   Figure 66

6. Push the tension wheel toward the rear of the unit to move the tension tube against the frame.

   Note: If it does not touch the frame, continue turning the tensioning screw until it does.

   

   Figure 67

   1. Drive sprocket
   2. Road wheel (5)
   3. Tension tube
   4. Tension wheel

7. Begin removing the track at the top of the tension wheel, peeling it off the wheel while rotating the track forward.

8. When the track is off the tension wheel, remove it from the drive sprocket and road wheels.

9. Beginning at the drive sprocket, coil the new track around the sprocket, ensuring that the lugs on the track fit between the cogs on the sprocket.

10. Push the track under and between the road wheels.

11. Starting at the bottom of the tension wheel, install the track around the wheel by rotating the track rearward while pushing the lugs into the wheel.

12. Turn the tensioning screw counterclockwise until the distance between the tension nut and the back of the tension tube is 7 cm (2-3/4 inches).

    

    Figure 68

13. Align the closest notch in the tension screw to the locking bolt hole and secure the screw with the locking bolt and nut.

14. Lower the traction unit to the ground.

15. Repeat steps 3 through 14 to replace the other track.

1. Remove the tracks; refer to Replacing the Tracks.

2. Remove the 4 bolts securing each lower track guide and remove the track guide.

   

   Figure 69

   1. Lower track guide
   2. Road wheel (5)
   3. Bolt (4)

3. Remove the snap ring and cap from a road wheel.

   

   Figure 70

   1. Snap ring
   2. Cap
   3. Road wheel
   4. Gasket

4. Check the grease under the cap and around the gasket. If it is dirty, gritty, or depleted, clean out all of the grease, replace the gasket, and add new grease.

5. Ensure that the road wheel turns smoothly on the bearing. If it does not, replace the road wheel; refer to the Installation Instructions for a road wheel kit or contact your Authorized Service Dealer for repair.

6. Install the greased cap and secure it with the snap ring.

7. Repeat steps 3 through 6 for the other road wheels.

8. Install the track guides to the machine. Torque the bolts to 91 to 112 N∙m (67 to 83 ft-lb).

9. Install the tracks; refer to Replacing the Tracks.

Remove any buildup of grass, dirt or other debris from the radiator screen with compressed air.

Capacity: 3.8 L (4 US quarts)

Type: 50/50 solution of water and permanent ethylene-glycol antifreeze.

1. Park the machine on a level surface, lower the loader arms, engage the parking brake, and shut off the engine.

2. Remove the key from the key switch and allow the engine to cool.

3. Check the coolant level of coolant in the expansion tank.

   The coolant level should be at or above the mark on the side of the tank.

   

   Figure 71

4. If the coolant level is low, complete the following procedure:

   1. Remove the coolant-fill cap.

      

      Figure 72

      1. Front coolant-bleed valve
      2. Coolant-fill cap and filler neck
      3. Top coolant-bleed valve

   2. Open the front and top coolant-bleed valves.

   3. Pour coolant into the coolant-filler neck until the coolant begins to come out of the front coolant-bleed valve.

   4. Close the front coolant-bleed valve.

   5. Pour coolant into the coolant-filler neck until the coolant begins to come out of the top coolant-bleed valve.

   6. Close the top coolant-bleed valve.

   7. Pour coolant into the coolant-filler neck until the coolant level comes into the filler neck.

   8. Install the coolant-fill cap.

   9. Add coolant into the expansion tank until it reaches the Full mark on the side of the tank.

5. Install the expansion tank cap.

Have an Authorized Service Dealer change the engine coolant yearly.

If you need to add engine coolant, refer to Checking the Engine-Coolant Level.

If the traction control bar does not rest flush and square with the reference bar when in the full backward position, immediately complete the following procedure:

1. Park the machine on a level surface, engage the parking brake, and lower the loader arms.

2. Shut off the engine and remove the key.

3. Pull straight back on the traction control so the front of the control contacts the reference bar.

   

   Figure 74

   1. Front of the control (out of alignment)
   2. Reference bar

4. If the front of the traction control does not rest square and flush with the reference bar, loosen the flange nut and bolt in the stem of the traction control.

   

   Figure 75

   1. Traction control
   2. Stem, bolt, and nut

5. Adjust the traction control so that it rests flush against the reference bar when you pull it straight back.

   

   Figure 76

6. Tighten the flange nut and bolt in the traction control stem.

If the machine creeps forward or backward when the traction control is in the NEUTRAL position and the unit is warm, immediately complete the following procedure:

1. Lift/support the machine so that both tracks are off the ground.

2. Open the rear-access cover.

3. Loosen the jam nuts on the traction rods, under the control panel.

   

   Figure 77

   1. Traction rod
   2. Jam nut

4. Start the traction unit and set the throttle to about 1/3 open position.

   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.

5. If the left track moves, lengthen or shorten the right traction rod until the track stops moving.

6. If the right track moves, lengthen or shorten the left traction rod until the track stops moving.

7. Tighten the jam nuts.

8. Close the rear-access cover.

9. Shut off the engine and lower the machine to the ground.

10. Drive the machine in full reverse, checking to see if the unit tracks straight. If it does not, note the direction it veers. Repeat the adjustment previously described so that it tracks straight in reverse.

If the machine does not drive straight when you hold the traction control against the reference bar, complete the following procedure:

1. Drive the machine with the traction control against the reference bar, noting which direction the traction unit veers.

2. Release the traction control.

3. If the traction unit veers to the left, loosen the right jam nut and adjust the tracking set screw on the front of the traction control.

4. If the traction unit veers to the right, loosen the left jam nut and adjust the tracking set screw on the front of the traction control.

   

   Figure 78

   1. Set screw
   2. Jam nut
   3. Stop

5. Repeat the procedure until the machine drives straight in the full forward position.

   Important: Ensure that the tracking set screws touch the stops in the full forward position to avoid over stroking the hydraulic pumps.