Husqvarna 325iLK Instruction manual

Workshop manual
325iLK
English
726 - 002 - 23.01.2020

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 325iLK............................................ 6
4 Servicing tools
4.1 Servicing tools........................................................8
4.2 Diagnostic tools......................................................8
5 Repair instructions
5.1 To clean and examine the product parts..............10
5.2 Battery housing.................................................... 10
5.3 Shaft.....................................................................11
5.4 Electrical system.................................................. 14
5.5 Bevel gear............................................................ 20
6 Troubleshooting
6.1 Overhaul...............................................................23
6.2 To do troubleshooting of the common service
tool............................................................................. 23
6.3 Troubleshooting of a product with a digital
user interface............................................................. 23
6.4 Troubleshooting of a product with a
mechanical user interface.......................................... 25
6.5 Troubleshooting of the battery and battery
charger....................................................................... 25
6.6 Troubleshooting of the connectors.......................26
7 Technical data
7.1 Technical data......................................................27
2726 - 002 - 23.01.2020

1 Introduction
1.1 Document description
This manual gives a full description of how to do
maintenance and repair on the product. It also gives
safety instructions that the personnel must obey.
1.2 Target group
This manual is for personnel with a general knowledge
of how to do repair and do servicing. All personnel that
do repair or do servicing on the product must read and
understand the manual.
1.3 Revisions
Changes to the product can cause changes to the
maintenance work and spare parts. Separate
information is sent out for each change.
Read the manual together with all received information
about changes to maintenance and spare parts for the
product.
1.4 Safety
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.
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2 Safety
2.1 Safety definitions
Warnings, cautions and notes are used to point out
specially important parts of the manual.
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.
CAUTION: Used if there is a risk of damage to
the product, other materials or the adjacent area
if the instructions in the manual are not obeyed.
Note: Used to give more information that is necessary in
a given situation.
2.2 General safety instructions
WARNING: Apply a new warning label if a
warning symbol on the product is damaged or
missing.
2.3 Symbols on the product
WARNING! This product can be
dangerous! Careless or incorrect use can
result in serious or fatal injury to the
operator or others. It is extremely
important that you read and understand
the contents of the operator's manual.
Please read the operator’s manual
carefully and make sure you understand
the instructions before the product is
used.
Use a protective helmet in locations where
objects can fall on you. Use approved
hearing protection. Use approved eye
protection.
/min
Maximum speed of the output shaft.
Rated voltage, V
Direct current.
The product can cause objects to eject,
which can cause injury.
The product agrees with the applicable
EC directives.
Use approved protective gloves.
Use heavy-duty slip-resistant boots.
Only use non-metallic, flexible cutting
attachments, i.e. trimmer heads with
trimmer cord.
Symbols on the product or its packaging
indicate that this product cannot be
handled as domestic waste. This product
must be deposited at an appropriate
recycling facility.
The operator must ensure that no people
or animals come closer than 15 metres.
When several operators are working at
the same site a safety distance of at least
15 metres must be in effect. The
attachment can forcibly throw objects that
can bounce back. This can result in
serious eye injuries if the recommended
safety equipment is not used.
Do not use in rain.
Keep all parts of your body away from the
hot surfaces.
Noise emission to the environment
according to the European Community’s
Directive. The attachment’s emission is
specified in the Technical data chapter
and on the label.
yyyywwxxxx The rating plate shows the serial num-
ber. yyyy is the production year, ww is
the production week and xxxx is the
sequential number.
Note: Other symbols/decals on the product refer to
certification requirements for other commercial areas.
2.4 Special safety instructions
2.4.1 To remove the battery
WARNING: Always remove the battery before
you do repairs or do servicing on the product.
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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.
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3 Servicing data
3.1 Servicing data 325iLK
For products with digital user interface.
● Lubricate with grease.
(x4) 1.4-1.8 Nm T27
(x2) 6-8 Nm T27
*
* = 2-2.5 Nm T27
(x2) *
(x4) *
(x2) *
(x2) 6-8 Nm T27
(x4) *
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For products with mechanical user interface. ● Lubricate with grease.
(x4) 1.4-1.8 Nm T27
(x2) 6-8 Nm T27
*
* = 2-2.5 Nm T27
(x2) *
(x4) *
(x2) *
(x2) 6-8 Nm T27
(x4) *
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4 Servicing tools
4.1 Servicing tools
CST
INSTRUCTION
321
74 5 6
Position Description Used for Article No.
1 Diagnostic tool kit Diagnostic examination and troubleshoot-
ing.
583 89 71-01
2 Adapter cable for battery products Diagnostic examination of battery products
with Engine diagnostic tool - .
581 19 23-01
3 Puller To pull a bearing of bevel gear axles. 504 90 90-01
4 T-handle Torx T27 Torx screws. 502 71 27-03
5 Pin To lock the bevel gear. 502 02 61-02
6 Assembly fixture To hold a brushcutter and a grass trimmer. 502 51 03-01
7 Bevel gear grease To lubricate the bevel gear. 503 97 64-01
4.2 Diagnostic tools
4.2.1 Common service tool
The common service tool (CST) is used with a computer
(not included) for Husqvarna products.
The common service tool transmits data from the
product and battery to the computer, for example
product ID. There is also a diagnostic tool list and a list
of saved error codes. The common service tool is also
used to update the software in battery products.
4.2.2 To connect the common service tool (CST)
CAUTION: If you install firmware to a new spare
part, make sure that you know the Husqvarna
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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.
B
C
A
D
3. Make sure that the product is in operation mode.
4. Start the common service tool (CST) on the
computer.
5. Connect the cable (D) to the computer.
6. Obey the instructions on the common service tool
(CST) and in the related chapter in this manual.
CAUTION: Do not disconnect the product
until the update is completed.
WARNING: Do not push the power trigger.
The motor can operate when the product is
in servicing mode.
4.2.3 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.
1. Make sure that the connectors on the battery and on
the product are clean and not damaged. Replace the
battery or control unit on the product if there is
damage.
2. Make sure that the cable to the common service tool
is clean and not damaged. Replace the cable if there
is damage.
3. Restart the computer.
4. Install the software again.
726 - 002 - 23.01.2020 Servicing tools - 9

5 Repair instructions
5.1 To clean and examine the product parts
• Clean and examine all parts fully. You find more
instructions in the chapter for each part if special
tools or procedures are necessary.
• Replace damaged or defective parts.
• Always use original spare parts.
5.2 Battery housing
5.2.1 To remove and install the wear guard
1. Remove the 4 screws and remove the wear guard.
2. Install in the opposite sequence.
5.2.2 To disassemble and assemble the control
handle
CAUTION: Make a note of the position of the
cables and components. To prevent damage to
the cables, put the cables correctly into the
control handle when you assemble the product.
1. Remove the 6 screws and the right half of the
control handle.
2. Assemble the control handle in the opposite
sequence.
5.2.3 To disassemble and assemble the battery
housing
1. Disassemble the control handle. Refer to
To
disassemble and assemble the control handle on
page 10 .
2. Disassemble the wear guard. Refer to To remove
and install the wear guard on page 10 .
3. Loosen the 4 screws and remove the battery
housing half.
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4. Remove the airflow cover.
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
bracket.
2. Remove the 2 screws near the shaft on the control
handle.
3. Pull out the shaft.
5.3.2 To install the shaft
1. Push the shaft into the control handle.
2. Turn the shaft axle to make sure that the shaft axle
is connected to the motor axle. Push the shaft more
into the control handle if the shaft axle is not
connected to the motor axle.
Note: Turn the shaft to make the mark on the shaft
align with the screw, if the shaft is reused. A new
shaft do not have this mark.
3. Tighten the 2 screws that hold the shaft in the motor
bracket.
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4. Tighten the 2 screws near the shaft on the control
handle.
5.3.3 To remove the axle
1. Remove the shaft. Refer to To remove the shaft on
page 11 .
2. Pull the axle from the shaft.
3. Push the toothed washer along the axle and remove
it from the axle.
5.3.4 To install the axle
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.
127 mm
3. Put grease on the part of the axle that has the shape
of a square.
4. Put the axle in the shaft.
5. Install the shaft. Refer to To install the shaft on page
11 .
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5.3.5 To remove the coupling
1. Remove the 2 screws on the coupling.
2. Pull the coupling from the shaft.
5.3.6 To install the coupling
1. Put the coupling on the shaft.
2. Install the 2 screws on the coupling.
3. Tighten the screws 2 times in the sequence shown
in the illustration.
1
2
3
4
4. Install the shaft. Refer to To install the shaft on page
11 .
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5.4 Electrical system
5.4.1 Electrical diagram
Trigger
Motor
123 4 56789
Black
Red
Gray
J8
J8
1
4
7
3
6
9
2
5
8
123 4 56789
123 4 56789
White Blue
Grey
Green Black
Orange Red
White
Blue
Grey
Green Black
Orange
Red
J10
1
4
7
3
6
9
2
5
8
J10
Battery
Electric
325iLK
Grey
Black
White
Red
Black
Black
Red
11
2
2
33
123 4 56789
1 2 3 4 5 6
1 2 3 4 5 6
Trigger
Analog
Digital
P2
Green
Green
Yellow
Yellow
Grey
Grey
Blue
Blue
Red
Red
1
3
4
5
6
5.4.2 To remove and install the motor
1. Remove the shaft. Refer to
To remove the shaft on
page 11 .
2. Remove the wear guard. Refer to
To remove and
install the wear guard on page 10 .
3. Disassemble the control handle. Refer to
To
disassemble and assemble the control handle on
page 10 .
4. Disassemble the battery housing. Refer to To
disassemble and assemble the battery housing on
page 10 .
5. Disconnect the motor.
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6. Remove the 2 screws on the motor bracket and
remove the motor.
A
7. Remove the vibration damping units (A).
8. Remove the 3 screws (B) that hold the motor
bracket (C).
B
C
9. Remove the motor bracket from the motor.
10. Install in the opposite sequence.
5.4.3 To remove and install the control unit
1. Remove the shaft. Refer to To remove the shaft on
page 11 .
2. Remove the wear guard. Refer to To remove and
install the wear guard on page 10 .
3. Disassemble the control handle. Refer to To
disassemble and assemble the control handle on
page 10 .
4. Disassemble the battery housing. Refer to To
disassemble and assemble the battery housing on
page 10 .
5. Remove the motor. Refer to To remove and install
the motor on page 14 .
6. Remove the screw (A) and the wire cover (B).
A
B
7. Remove the 2 screws (C) to loosen the battery
connector (D).
D
C
8. Disconnect the user interface.
9. Remove the control unit.
10. Install in the opposite sequence.
5.4.4 To remove the power trigger lockout, power
trigger and digital user interface
1. Remove the shaft. Refer to To remove the shaft on
page 11 .
2. Disassemble the control handle. Refer to To
disassemble and assemble the control handle on
page 10 .
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3. Remove the power trigger lockout (A), digital user
interface (B) and the power trigger (C).
B
C
A
4. Disconnect the digital user interface.
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.
2. Connect the user interface to the end of the cable
with 2 pieces of tape.
3. Put the digital user interface in the handle.
4. Install the cable in the handle as shown in the
illustration.
5. Install the cable in the battery housing as shown in
the illustration.
6. Install the cable holder.
7. Install the power trigger and the power trigger
lockout. Refer to To install the power trigger and
power trigger lockout in a control handle with a
digital user interface on page 17 .
8. Assemble the control handle. Refer to To
disassemble and assemble the control handle on
page 10 .
9. Connect the product to the common service tool
(CST) and install new firmware if you replace the
user interface. Refer to To connect the common
service tool (CST) on page 8 .
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5.4.6 To install the spring on the power trigger
lockout
1. Attach the spring to the power trigger.
2. Turn the spring rearward.
3. Push the front part of the spring (A) to make the
bend (B) move on the edge of the power trigger
lockout (C).
A
B
C
4. Turn the spring up.
5.4.7 To install the power trigger and power trigger
lockout in a control handle with a digital user
interface
1. Attach the spring to the power trigger.
2. Put the power trigger in the control handle. Make
sure that the power trigger spring is in the correct
position.
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3. Push the power trigger rearward and more into the
control handle. Do not cause damage to the
microswitch lever (A).
A
4. Attach the spring to the power trigger lockout if it is
necessary. Refer to To install the spring on the
power trigger lockout on page 17 .
5. Put the power trigger lockout in the control handle.
Make sure that the spring on the power trigger
lockout is in the correct position.
6. Assemble the control handle. Refer to To
disassemble and assemble the control handle on
page 10 .
7. Connect the product to the common service tool
(CST) and install new firmware if you replace the
user interface. Refer to To connect the common
service tool (CST) on page 8 .
5.4.8 To remove and install the power trigger
lockout, power trigger and mechanical user
interface
1. Remove the shaft. Refer to To remove the shaft on
page 11 .
2. Disassemble the control handle. Refer to To
disassemble and assemble the control handle on
page 10 .
3. Remove the power trigger lockout (A), mechanical
user interface (B) and the power trigger (C).
B
C
A
4. Remove the main switch.
CAUTION: Do not pull the wires. Hold the
connector when you disconnect the main
switch.
a) Release the catch (B) with a small screwdriver
and pull out the connector (C).
5. Install in the opposite sequence.
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5.4.9 To install the cable into a product with a
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.
2. Connect the user interface to the end of the cable
with 2 pieces of tape.
3. Put the main switch in the handle.
4. Install the cable in the handle as shown in the
illustration.
5. Install the cable in the battery housing as shown in
the illustration.
6. Install the cable holder.
7. Install the power trigger and the power trigger
lockout. Refer to To remove and install the power
trigger lockout, power trigger and mechanical user
interface on page 18 .
8. Assemble the control handle.
5.4.10 To install the power trigger and power
trigger lockout in a control handle with a
mechanical user interface
1. Put the power trigger in the control handle.
2. Attach the spring to the power trigger lockout if it is
necessary. Refer to To install the spring on the
power trigger lockout on page 17 .
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3. Put the power trigger lockout in the control handle.
Make sure that the spring is in the correct position.
4. Assemble the control handle. Refer to To
disassemble and assemble the control handle on
page 10 .
5. Connect the product to the common service tool
(CST) and install new firmware if you replace the
user interface. Refer to To connect the common
service tool (CST) on page 8 .
5.5 Bevel gear
5.5.1 Overview of the bevel gear
5
12
3
4
6
7
8
10
9
11
12
13
1. Bevel gear housing
2. Grease plug
3. Plate screw
4. Clamp screw
5. Input axle
6. Bearings
7. Snap ring, small
8. Snap ring
9. Bearings
10. Output axle
11. Snap ring
12. Drive disc
13. Dust cover
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