1.5 Servicing tools The manual gives information about necessary servicing tools. Always use original tools from Husqvarna. 726 - 002 - 23.01.2020 Introduction - 3...
2 Safety 2.1 Safety definitions Warnings, cautions and notes are used to point out Use approved protective gloves. specially important parts of the manual. WARNING: Used if there is a risk of injury or death for the operator or bystanders if the Use heavy-duty slip-resistant boots.
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WARNING: Do not put the battery back until the product is assembled. 1. Press in the catches and remove the battery. 2.4.2 Cutting equipment safety WARNING: Always remove the cutting equipment before you do repairs or do servicing on the product. WARNING: Do not install the cutting equipment until the product is assembled.
4.2.2 To connect the common service tool (CST) CAUTION: If you install firmware to a new spare 4.2.1 Common service tool part, make sure that you know the Husqvarna The common service tool (CST) is used with a computer (not included) for Husqvarna products.
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identification number (HID). The identification number is found on the spare part. 1. Remove the battery from the product. 2. Connect the adapter cable (A) to the battery (B) and to the battery slot connector (C) on the product. 3. Make sure that the product is in operation mode. 4.
5 Repair instructions 5.1 To clean and examine the product parts the cables, put the cables correctly into the control handle when you assemble the product. • Clean and examine all parts fully. You find more instructions in the chapter for each part if special tools or procedures are necessary.
4. Remove the airflow cover. 5.3.2 To install the shaft 1. Push the shaft into the control handle. 5. Assemble in the opposite sequence. 5.3 Shaft 5.3.1 To remove the shaft 1. Loosen the 2 screws that hold the shaft in the motor 2.
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4. Tighten the 2 screws near the shaft on the control 5.3.4 To install the axle handle. 1. Put the toothed washer on end of the axle that has the shape of a square. 2. Push the toothed washer along the axle until the toothed washer is 127 mm from the end of the axle.
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5.3.5 To remove the coupling 3. Tighten the screws 2 times in the sequence shown in the illustration. 1. Remove the 2 screws on the coupling. To install the shaft on page 4. Install the shaft. Refer to 2. Pull the coupling from the shaft. 11 .
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6. Remove the 2 screws on the motor bracket and 6. Remove the screw (A) and the wire cover (B). remove the motor. 7. Remove the 2 screws (C) to loosen the battery connector (D). 7. Remove the vibration damping units (A). 8.
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5.4.5 To install the cable into a product with a digital user interface 1. Make a note of the Husqvarna identification number (HID) of the new digital user interface before you install it. The identification number is found on the new control unit.
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5.4.6 To install the spring on the power trigger 4. Turn the spring up. lockout 1. Attach the spring to the power trigger. 2. Turn the spring rearward. 5.4.7 To install the power trigger and power trigger lockout in a control handle with a digital user interface 1.
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3. Push the power trigger rearward and more into the 3. Remove the power trigger lockout (A), mechanical control handle. Do not cause damage to the user interface (B) and the power trigger (C). microswitch lever (A). 4. Remove the main switch. 4.
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5. Install the cable in the battery housing as shown in the illustration. mechanical user interface 1. Make a note of the Husqvarna identification number (HID) of the new digital user interface before you install it. The identification number is found on the new control unit.
3. Put the power trigger lockout in the control handle. 4. Assemble the control handle. Refer to disassemble and assemble the control handle on Make sure that the spring is in the correct position. page 10 . 5. Connect the product to the common service tool (CST) and install new firmware if you replace the To connect the common user interface.
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5.5.2 To remove and install the bevel gear 4. Apply heat to the bevel gear housing until it is approximately 110 °C. Tap the bevel gear against a 1. Remove the cutting attachment and the cutting wooden block to remove the input axle assembly. attachment guard.
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5.5.4 To assemble the bevel gear 6. Put the input axle assembly into the bevel gear housing. 1. Clean all parts and replace worn or damaged parts if it is necessary. 2. Install the bearings on the input axle and install the bearings on the output axle.
6 Troubleshooting 6.1 Overhaul 3. Restart the computer. Examine the components of the product. You find repair 4. Install the software again. and servicing instructions for each component in the related chapters of this manual. 6.2 To do troubleshooting of the common service tool If there is no signal to the common service tool when it is connected to the product, do the procedure that follows.
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Symptom Possible causes Recommended step The warning symbol on the user inter- The temperature is too high. Wait for the product to become cool face flashes continuously. (max. 5 min.). The temperature of the control unit or Make sure that the product and the the battery is too low.
6.4 Troubleshooting of a product with a mechanical user interface Symptom Possible causes Recommended step The product does not start. The battery is defective. Push the on/off button to do a check of the battery. A minimum of 1 green LED must come on.
Symptom Possible causes Recommended step A red warning sign flashes on the Defective connection between charg- Make sure the power plugs between charger when the battery is attached. er and battery. the charger and battery are not dirty or damaged. Battery temperature too high.
Vibration levels at handles, measured according to ISO 22867, m/s Equipped with trimmer head (original), left/right 3.6/1.4 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.