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Husqvarna LC 551 iV Workshop Manual

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Workshop manual
LC 551 iV
English
1292 - 001 -

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  Summary of Contents for Husqvarna LC 551 iV

  • Page 1 Workshop manual LC 551 iV English 1292 - 001 -...
  • Page 2: Table Of Contents

    3.1 Servicing schedule..........6 9.1 Technical data............40 3.2 Function test............7 9.2 Registered trademarks.........41 4 Servicing data 4.1 LC 551 iV .............. 9 4.2 Rear axle and front axle........10 4.3 Handle..............11 4.4 Covers ..............12 4.5 Power unit............13 4.6 Servicing tools............14 5 Function overview 5.1 Rating plate and product serial number....
  • Page 3: Introduction

    WARNING: All personnel that repair or do servicing on the product must read and understand the safety instructions in this workshop manual. 1.5 Servicing tools The manual gives information about necessary servicing tools. Always use original tools from Husqvarna. 1292 - 001 - Introduction - 3...
  • Page 4: Safety

    Noise emission to the environment that have tension. according to the European Community’s • Use only a Husqvarna Battery Series type of battery Directive. The product’s emission is with this product. Obey the safety instructions that specified in the Technical data chapter are given for the battery and battery charger.
  • Page 5 Start procedure: push ON/OFF button, loos- en start inhibitor, push motor brake handle down. Release motor brake handle to stop. Slow Fast Note: Other symbols/decals on the product refer to certification requirements for some markets. 1292 - 001 - Safety - 5...
  • Page 6: Prepare And Do Servicing On The Product

    3 Prepare and do servicing on the product 3.1 Servicing schedule After each Every 10 Every 25 Maintenance task Before use hours hours Product Do a general inspection. Clean the product. Clean the transmission covers. Make sure that the motor does not have grass on it.
  • Page 7: Function Test

    3.2 Function test 7. Loosen the start inhibitor. 3.2.1 Control panel overview 8. Push the motor brake handle in the direction of the handlebar. 1. ON/OFF button 2. Decrease speed button 3.2.3 To use the drive on the wheels 3. Operation speed indicator •...
  • Page 8 3.2.5 To stop the product The product stops automatically if you do not operate it for 3 minutes. 1. Release the motor brake handle to stop the motor. 2. Push the ON/OFF button on the control panel. All LED lights and symbols on the display go out. 3.
  • Page 9: Servicing Data

    4 Servicing data 4.1 LC 551 iV 7.0 - 9.0 Nm 13 mm 3.0 - 4.0 Nm 8 mm 23.5 - 24.5 Nm 13 mm 3.0 - 4.0 Nm 8 mm 3.0 - 4.0 Nm 8 mm 24.0 Nm 12 mm 1.4 - 2.5 Nm...
  • Page 10: Rear Axle And Front Axle

    4.2 Rear axle and front axle 3.5 Nm 3.0 - 4.0 Nm 8 mm 5.5 - 6.5 Nm 20 Nm 8 mm 13 mm 1.5 - 2.5 Nm 3.0 - 4.0 Nm 8 mm 3.0 - 3.5 Nm 8 mm 18 - 22 Nm 13 mm 10 - Servicing data...
  • Page 11: Handle

    4.3 Handle 0.7 - 1.2 Nm 1.2 - 1.7 Nm 0.7 - 1.2 Nm 1.2 - 1.7 Nm 0.7 - 1.2 Nm 18 - 22 Nm 13 mm 6 - 8 Nm XX mm 1292 - 001 - Servicing data - 11...
  • Page 12: Covers

    4.4 Covers 1.2 - 1.4 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 12 - Servicing data 1292 - 001 -...
  • Page 13: Power Unit

    4.5 Power unit 1.2 - 1.4 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 2.0 - 3.0 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 2.0 - 3.0 Nm 1.2 - 1.4 Nm 1.2 - 1.4 Nm 0.7 - 1.0 Nm 8.0 - 15.0 Nm...
  • Page 14: Servicing Tools

    4.6 Servicing tools Item Description Use for Article number Open Wrench, 8, 12, 13, 14 mm Bolts T-handle Torx T20 Screw with torx head 588 59 85-01 T-handle Torx T25 Screw with torx head 502 71 27-01 Snap ring pliers Snap rings Screwdriver, PH4 Screws...
  • Page 15: Function Overview

    XXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXX XXXXXXXXXXX XXXXX XXXX 20XX Use only with Husqvarna BLi batteries LED lights Battery status All LEDs are lit Fully charged (75-100%) LED 1, LED 2, LED 3 are The battery is 50%-75% 5.2 Motor...
  • Page 16 6. Remove the battery from the battery charger. 5.3.3 Battery charging status A Husqvarna Li-ion battery can be charged or used at all charging levels. The battery is not damaged. A fully charged battery will not decrease its charge when the battery is left in the charger.
  • Page 17: Repair Instructions

    6 Repair instructions 6.1 Product overview for repair instructions 1. Control panel 5. Blade 2. Start inhibitor 6. Motor 3. Front axle 7. Rear wheel 4. Transmission 1292 - 001 - Repair instructions - 17...
  • Page 18: Power Unit Overview

    6.2 Power unit overview 1. Battery box 9. Air outlet 2. Fan 3. Connections between the battery box and the motor 6.3 Battery box overview 4. Motor Control box Note: The illustration shows the battery box turned with 5. Motor the top down 6.
  • Page 19: To Clean And Examine The Product Parts

    1. Connections between the battery box and the motor 2. Left fan 3. Bracket for the battery box cables 4. Cable bracket for the left battery 5. Cable bracket for the right battery 6. Key switch 7. Right fan 6.4 To clean and examine the product parts •...
  • Page 20: Blade

    6.5 Blade 9. Pull the blade around by hand and make sure that it turns freely. 6.5.1 To remove and replace the blade WARNING: Use heavy duty gloves. The 1. Lock the blade with a block of wood. blade is very sharp and cuts can easily occur.
  • Page 21: Front Axle

    4. Attach the wheels in the opposite sequence. Use the 4. Remove the nut cap and the nut. Remove the 2 ball Servicing tools on page 14 . correct torque. Refer to bearings and the wheels on the sides of the front wheel axle.
  • Page 22 3. Remove the nut cap, the nut, and the wheel on the 2 5. Remove the transmission bracket screws. sides of the product. 6. Remove the cotter pin from the link arm to 4. Remove the snap ring, the pinion, the washer and disengage the height mechanism.
  • Page 23: Motor

    6.9 Motor 7. Remove the transmission support screws and the supports. Remove the transmission and the rear axle. 6.9.1 To remove the power unit from the chassis 1. Remove the batteries from the power unit. Remove the safety key, if it is installed. 2.
  • Page 24 To remove and replace 3. Put the product on its side. Make sure that it is 5. Remove the blade. Refer to the blade on page 20 . stable. 4. Disconnect the transmission cable. 6. Remove the 4 bolts and remove the motor cover. 7.
  • Page 25 8. Remove the 3 bolts and the 3 spring washers. 4. Turn the power unit with its top up and open the Remove the power unit from the chassis. battery hatch. 9. Install the power unit in the opposite sequence. 5.
  • Page 26 6. Remove the cover from the power unit. 3. Loosen the screw and push the plastic plate to the side. 4. Pull up the transmission cable and disconnect it. 6.9.3 To remove the motor control box To remove the power unit from the chassis 1.
  • Page 27 6. Pull up the cables (A, B and C) and disconnect 4. Pull up the fan cables and disconnect them. them. 5. Remove the screws and remove the battery control box. 7. Remove the motor control box (D). Replace the motor control box, if it is necessary.
  • Page 28 6.9.5 To remove the battery box 3. Remove the 3 screws and remove the bracket (A). To remove the power unit from the chassis 1. Refer to on page 23 , To remove the cover from the power unit on page 25 and To remove the battery control box on page 27 .
  • Page 29 6.9.7 To remove the fans and the air filters 3. Remove the 2 screws (A) and remove the cover (B). To remove the power unit from the chassis 1. Refer to on page 23 , To remove the cover from the power unit on page 25 , To remove the battery control box on page 27 and To remove the battery box on page 28 .
  • Page 30 6.9.8 To remove air conductor 6.9.9 To remove the motor To remove the power unit from the chassis To remove the power unit from the chassis 1. Refer to 1. Refer to on page 23 , To remove the cover from the power on page 23 , To remove the cover from the power unit on page 25 , To remove the battery box on page unit on page 25 , To remove the motor control box on...
  • Page 31: Control Panel

    6.10 Control panel 6.11 Start inhibitor 6.10.1 To disassemble and assemble the control 6.11.1 To remove and install the start inhibitor panel 1. Remove the 4 screws and remove the cover on the left side of the start inhibitor. Pull the cables out of 1.
  • Page 32 4. Remove the right side of the start inhibitor. 5. Remove the drive bail wire. 6. Install the start inhibitor in the opposite sequence. Servicing tools on Use the correct torque. Refer to page 14 . 32 - Repair instructions 1292 - 001 -...
  • Page 33: Troubleshooting

    7 Troubleshooting 7.1 Troubleshooting schedule To do Problem Possible cause Step Troubleshooting There is no battery in the Make sure that the battery is installed cor- Install a battery. battery box. rectly. The battery is defective. Push the button on the battery and do a Replace the bat- check of the battery error condition.
  • Page 34: Troubleshooting Schedule

    7.2 Troubleshooting schedule To do Problem Possible cause Step Troubleshooting The warning indicator shows Make sure that the cutting motor is instal- Connect the phase the error code 2: Cutting mo- led correctly and that the phase cables are cables correctly or tor phase connection is de- not defective.
  • Page 35: Troubleshooting Schedule

    7.3 Troubleshooting schedule To do Problem Possible cause Step Troubleshooting The warning indicator shows Make sure that the transmission motor Clean and let the the error code 1: Transmis- does not have grass on it. transmission motor sion motor high temperature cool down.
  • Page 36: Troubleshooting Schedule

    7.4 Troubleshooting schedule To do Problem Possible cause Step Troubleshooting The warning indicator shows Do a check of the cooling fan in battery box Replace the cooling the error code 17: Cooling 1. Make sure that it operates when the cut- fan assembly.
  • Page 37: Troubleshooting Schedule

    7.6 To use the common service tool (CST) 3. Connect the cable (D) to the CST. The CST transmits data from Husqvarna products and the batteries to a computer (not included). There is a diagnostic tool list and a list of saved error codes. The CST can also update the software in battery products.
  • Page 38: To Do Troubleshooting Of The Common Service Tool (Cst)

    7. On the computer, select the battery slot that is connected. 8. On the computer, start the update and wait until the update is done. 9. Stop the product, turn the safety key to 0. 10. Connect the adapter cable to the next battery slot and do steps 3-7 again.
  • Page 39: Wiring Diagram

    8 Wiring diagram 8.1 Wiring diagram Black Black Yellow Green Blue Black Brown Brown Blue White White Black Yellow Green 1292 - 001 - Wiring diagram - 39...
  • Page 40: Technical Data

    Battery runtime, min, (free run) with SavE activated, with one Husqvarna 5.2 Ah battery (Bli200). Battery runtime, min, (free run) with standard mode acti- vated, with one Husqvarna 5.2 Ah battery (Bli200). Noise emissions Sound power level, measured dB (A)
  • Page 41: Registered Trademarks

    50–60 QC500 100–240 50–60 9.2 Registered trademarks ® Bluetooth word mark and logos are registered Bluetooth SIG, inc. and any use of trademarks owned by such marks by Husqvarna is under license. 1292 - 001 - Technical data - 41...
  • Page 42 42 - Technical data 1292 - 001 -...
  • Page 43 1292 - 001 - Technical data - 43...
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