Husqvarna 340i Workshop Manual
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Husqvarna 340i Workshop Manual

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Workshop manual
340i
English
1435 - 001 - 11.06.2020

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Summary of Contents for Husqvarna 340i

  • Page 1 Workshop manual 340i English 1435 - 001 - 11.06.2020...

  • Page 2: Table Of Contents

    Contents 1 Introduction 1.1 Document description..........3 1.2 Target group............3 1.3 Revisions..............3 1.4 Safety..............3 1.5 Servicing tools............3 2 Safety 2.1 Safety definitions............4 2.2 General safety instructions........4 2.3 Symbols on the product......... 4 2.4 Special safety instructions........4 3 Servicing data 3.1 Servicing data (digital user interface).....5 3.2 Servicing data (mechanical user interface)....

  • Page 3: Introduction

    1.5 Servicing tools The manual gives information about necessary servicing tools. Always use original tools from Husqvarna. 1435 - 001 - 11.06.2020 Introduction - 3...

  • Page 4: Safety

    2 Safety 2.1 Safety definitions WARNING: Do not put the battery back until the product is assembled. Warnings, cautions and notes are used to point out specially important parts of the manual. 1. Press in the catches and remove the battery. WARNING: Used if there is a risk of injury or death for the operator or bystanders if the instructions in the manual are not obeyed.

  • Page 5: Servicing Data

    3 Servicing data 3.1 Servicing data (digital user interface) ● Lubricate with grease. ▲ Lubricate with chain oil. 7 - 8 Nm 1 - 2 Nm 1 - 2 Nm (x4) 1 - 2 Nm (x3) 3.5 Nm 3 Nm (x2) 1.8 - 2.2 Nm (x5) 2.2 Nm 2.5 - 3 Nm...
  • Page 6 (x2) 4 Nm (x1) 4 Nm (x9) 2.5 - 3 Nm (x4) 3 - 4 Nm 6 - Servicing data 1435 - 001 - 11.06.2020...

  • Page 7: Servicing Data (Mechanical User Interface)

    3.2 Servicing data (mechanical user interface) ● Lubricate with grease. ▲ Lubricate with chain oil. 1 - 2 Nm 7 - 8 Nm 1 - 2 Nm (x4) 1 - 2 Nm (x3) 3.5 Nm 3 Nm (x2) 1.8 - 2.2 Nm (x5) 2.2 Nm 2.5 - 3 Nm 1435 - 001 - 11.06.2020...
  • Page 8 (x2) 4 Nm (x1) 4 Nm (x9) 2.5 - 3 Nm (x4) 3 - 4 Nm 8 - Servicing data 1435 - 001 - 11.06.2020...

  • Page 9: Servicing Tools

    4 Servicing tools 4.1 Servicing tools INSTRUCTION Posi- Description Article No. tion Diagnostic tool kit To do a check of the product and install updates to the firm- 583 89 71-01 ware. Adapter cable for battery To do a check of battery products with the diagnostic tool kit. 581 19 23-01 products T-handle Torx, T20...

  • Page 10: Electrical Diagram

    4.2 Electrical diagram Trigger 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 Switch Yellow Pink 1 2 3 4 5 6 7 8 9 White Black White Grey Black Motor Blue 1 2 3 10 - Servicing tools...

  • Page 11: Repair Instructions

    5 Repair instructions 5.1 To clean and examine the product parts 5.2.2 To remove and install a drive sprocket cover attached with a nut • Clean and examine all parts fully. You find more instructions in the chapter for each part if special 1.
  • Page 12 5.2.4 To remove and install the brake drum 4. Install in the opposite sequence. Make sure that the flat surfaces in the worm gear are aligned with the To remove and 1. Remove the drive sprocket. Refer to flat surfaces on the motor axle. install the drive sprocket on page 11 .

  • Page 13: Chain Tensioner

    3. Remove the screw and the chain catcher. A saw chain becomes longer when you use it. Adjust the saw chain regularly. 1. Loosen the bar knob that holds the drive sprocket cover. 4. Examine the chain catcher for wear and damages. Replace the chain catcher if it is worn or damaged.
  • Page 14 5.3.1.2 To disassemble and assemble the chain A saw chain becomes longer when you use it. Adjust the tensioner saw chain regularly. 1. Remove the drive sprocket cover. 1. Loosen the bar nut that holds the drive sprocket cover. Use the combination wrench. 2.

  • Page 15: Crankcase

    5.4 Crankcase 5.3.2.2 To disassemble and assemble the chain tensioner 5.4.1 To remove and install the front handle To adjust 1. Remove the drive sprocket cover. Refer to the tension of the saw chain on page 14 . 1. Remove the 2 screws (A) on the side of the front handle.

  • Page 16: Power Trigger

    To disassemble 3. Remove the 9 screws. 9. Assemble the crankcase. Refer to and assemble the crankcase on page 15 . 10. Install the guide bar and the saw chain. To remove 11. Install the drive sprocket cover. Refer to and install a drive sprocket cover attached with a bar knob on page 11 .
  • Page 17 5. Remove the power trigger. 3. Install the power trigger. 6. Pull out the recoil spring from the power trigger. 4. Make sure that the switch lever is above the switch engage pin on the power trigger. 7. Make sure that there is tension in the recoil spring. Replace the recoil spring if it is necessary.
  • Page 18 7. Make sure that the edges of the power trigger and 4. Make sure that the power trigger lockout has no the power trigger lockout are in the correct positions. defects. Replace the power trigger lockout if it has defects. 5.
  • Page 19 5.5.4 To assemble the power trigger (mechanical 5. Make sure that the recoil spring is below the plastic molding boss before you install the throttle trigger user interface) lockout. 1. Connect and Install the main switch (A). 6. Make sure that the power trigger lockout has no defects.

  • Page 20: Front Handguard

    5.6 Front handguard 5. Disassemble the crankcase. Refer to disassemble and assemble the crankcase on page 15 . 5.6.1 To remove and install the front handguard 1. Disassemble the crankcase. Refer to Power 6. Disassemble the power trigger. Refer to disassemble and assemble the crankcase on page trigger on page 16 .
  • Page 21 11. Disconnect the connector for the chain brake sensor 15. Disconnect the communication cable (A) from the (A). control unit. 16. Remove the 2 screws (B) and the battery connector from the control unit. 5.7.2 To install the motor, control unit and battery connector 12.
  • Page 22 4. Connect the user interface connector to the control 8. Hold the battery connector in position and install the unit. 2 screws. 5. Connect the connector for the chain brake sensor 9. Hold the motor in position and install the 3 screws. (A).

  • Page 23: User Interface

    5.8 User interface 7. Install in the opposite sequence. Make sure that the digital user interface attaches to the correct positions in the crankcase when you install it. 5.8.1 To remove and install the digital user interface 1. Disassemble the crankcase. Refer to disassemble and assemble the crankcase on page 15 .

  • Page 24: Chain Oil Tank

    4. Push in the clips and pull out the mechanical user 5. Remove the grommet (A) and pull out the oil hose interface. (B) and the oil filter (C). 6. Install in the opposite sequence. a) Make sure that you push the oil hose into the dedicated slot in the crankcase when you install the chain oil tank.
  • Page 25 4. Remove the 4 screws and carefully remove the 4. Carefully remove the lever (C), the spring and the chain brake cover. spring retainer (D). 5. Install in the opposite sequence. 5.10.3 To remove and install the chain brake sensor 1.

  • Page 26: Oil Pump

    5.11 Oil pump 7. Remove the rubber hose from the opening in the crankcase. 5.11.1 To remove and install the oil pump 1. Disassemble the crankcase. Refer to disassemble and assemble the crankcase on page 15 . 2. Remove the motor, the control unit, and the battery connector.

  • Page 27: Troubleshooting

    The motor can operate when the product is CAUTION: If you install firmware to a new spare in servicing mode. part, make sure that you know the Husqvarna identification number (HID). The identification number is found on the spare part.

  • Page 28: Troubleshooting Of The Product

    6.2 Troubleshooting of the product Symptom Possible cause Recommended step The product does not start. No LEDs Defective battery. Press the ON/OFF button to do a come on when you press the check of the battery. A minimum of 1 ON/OFF button.
  • Page 29 Symptom Possible cause Recommended step A warning sign on the user interface Defective signal between the battery Make sure that the power connectors flashes after start. and the product. between the battery and the product are clean and not damaged. Make sure that the small cables be- tween the connector and the control unit are not loose or damaged.

  • Page 30: Troubleshooting Of The Battery And Battery Charger

    6.3 Troubleshooting of the battery and battery charger Symptom Possible causes Recommended step No LEDs flash on the battery when Defective battery. Replace the battery. you press the start button. A warning sign shows a constant red Defective battery. Replace the battery. light on the battery when the start but- ton is pressed.
  • Page 31 Symptom Possible causes Recommended step A green lamp on the charger comes Defective Battery. Put the battery in a charger. If the on for approximately 5-10 seconds same problem occurs, replace the when the battery is attached. After battery. that a red warning sign flashes on the Defective charger.

  • Page 32: Technical Data

    Spur/6 Maximum chain speed / (savE), m/s 20/(18) 7.1.1 Approved batteries and chargers Only use Husqvarna original batteries and chargers for this product. Information about approved batteries and chargers is found in the Husqvarna accessories guide. Noise emissions in the environment measured as sound power (L ) in conformity with EC directive 2000/14/EC.
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