Husqvarna 536LiL Instruction manual

Workshop manual
536LiL, 536LiLX/520iLX,
536LiR, 536LiRX/520iRX,
136LiC, 336LiC/315iC English
737 - 002 - 25.10.2018

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 LiL, LiR, LiC/iC............................... 5
3.2 Servicing data LiLX/iLX, LiRX/iRX......................... 6
3.3 Servicing data LiL -2015080000............................ 6
3.4 Servicing data LiL, LiLX 2015080000-................... 7
3.5 Servicing data LiLX/iLX 20180200201-..................9
3.6 Servicing data LiLX/iLX US from S/N
20182500300............................................................. 10
3.7 Servicing data LiR -2015100000..........................10
3.8 Servicing data LiR/LiRX 201510000-................... 11
3.9 Servicing data LiRX/iRX 20174900446-...............13
3.10 Servicing data LiR, LiRX/iRX............................. 14
3.11 Servicing data LiC/iC..........................................15
3.12 Servicing data LiC/iC..........................................16
3.13 Trimmer line replacement.................................. 17
4 Servicing tools
4.1 Diagnostic tools ...................................................18
5 Repair instructions
5.1 To clean and examine the product parts..............19
5.2 To replace a trimmer line cutter........................... 19
5.3 To replace the trimmer head................................ 19
5.4 To change the keypad..........................................20
5.5 To replace the EMC filter..................................... 20
5.6 To replace the handle.......................................... 21
5.7 To replace the shaft............................................. 21
5.8 To disassemble the wear guard........................... 21
5.9 To replace the motor and drive wheel 136LiC,
336LiC/315iC............................................................. 22
5.10 To repair damaged threads................................22
5.11 Motor.................................................................. 22
5.12 Main switch........................................................ 24
5.13 Control unit.........................................................26
5.14 Fan..................................................................... 29
5.15 Control cable...................................................... 30
5.16 Trimmer guard....................................................34
5.17 Wear guard for the battery housing....................36
5.18 Battery housing.................................................. 37
5.19 Operating handle................................................37
5.20 Power trigger......................................................37
6 Troubleshooting
6.1 Overhaul...............................................................39
6.2 To connect the common service tool................... 39
6.3 To do troubleshooting of the common service
tool............................................................................. 39
6.4 Troubleshooting of the product............................ 39
6.5 Troubleshooting of the control unit PMDC - ........ 40
6.6 Troubleshooting the control unit BLDC - S/N
up to: LiL -2015080000, S/N up to:LiR
-2015100000.............................................................. 41
6.7 Troubleshooting the control unit BLDC - S/N
from: LiL, LiLX 2015080000-, S/N from: LiR,
LiRX/iRX 201510000-................................................ 41
6.8 Troubleshooting of the battery and battery
charger....................................................................... 42
6.9 Troubleshooting of the connectors.......................43
6.10 For products with S/N: LiL -2015080000, LiR
-2015100000.............................................................. 43
6.11 For products with S/N: LiL, LiLX
2015080000-, LiR, LiRX/iRX 201510000-..................44
6.12 Troubleshooting of the electrical system............45
2737 - 002 - 25.10.2018

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.
737 - 002 - 25.10.2018 Introduction - 3

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
Start/stop
SavE battery save mode
Warning/fault indicator
Optional direction of rotation
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.
WARNING: Do not put the battery back until the
product is assembled.
1. Press in the catches (1) and remove the battery (2).
2
1
1
4 - Safety 737 - 002 - 25.10.2018

3 Servicing data
3.1 Servicing data LiL, LiR, LiC/iC
The numbers show the tightening torque for the
components in Nm.
* Tightening torque during inspection: 52 ft/lb (2.5 Nm).
(x6) 1 Nm
(x4) 1 Nm 4 mm
(x4) 2 ~ 3 Nm 4 mm
6 ~ 8 Nm 4 mm
3 ~ 4 Nm
LiL LiL, LiR
LiL, LiR, LiC, iC
10 mm
8 ~ 12 Nm 19 mm
(x2) 3 ~ 4 Nm* 4 mm
4 mm6 ~ 8 Nm
737 - 002 - 25.10.2018 Servicing data - 5

3.2 Servicing data LiLX/iLX, LiRX/iRX
The numbers show the tightening torque for the
components in Nm.
* Tightening torque during inspection: 52 ft/lb (2.5 Nm).
(x6) 1 Nm
(x4) 1 Nm 4 mm
(x4) 2 ~ 3 Nm 4 mm
6 ~ 8 Nm 4 mm
3 ~ 4 Nm
LiLX, iLX LiLX/iLX, LiRX/iRX
LiLX/iLX,
LiRX/iRX
4 mm
(x2) 3 ~ 4 Nm* 4 mm
4 mm
6 ~ 8 Nm
35 ~ 50 Nm
3.3 Servicing data LiL -2015080000
Symbol used where grease is to be used.
6 - Servicing data 737 - 002 - 25.10.2018

(x6) 1,7 ~ 2 Nm 4 mm
(x2) 1 Nm
(x2) 1 Nm
3.4 Servicing data LiL, LiLX 2015080000-
Symbol used where grease is to be used.
737 - 002 - 25.10.2018 Servicing data - 7

(x2) 1 Nm
(x2) 1 Nm
(x6) 1,7 ~ 2 Nm 4 mm
8 - Servicing data 737 - 002 - 25.10.2018

3.5 Servicing data LiLX/iLX 20180200201-
(x2) 1 Nm
(x2) 1 Nm
(x6) 1,7 ~ 2 Nm 4 mm
737 - 002 - 25.10.2018 Servicing data - 9

3.6 Servicing data LiLX/iLX US from S/N 20182500300
(x2) 1 Nm
(x2) 1 Nm
(x6) 1,7 ~ 2 Nm 4 mm
3.7 Servicing data LiR -2015100000
Symbol used where grease is to be used.
10 - Servicing data 737 - 002 - 25.10.2018

(x2) 1 Nm
(x2) 1 Nm
3.8 Servicing data LiR/LiRX 201510000-
Symbol used where grease is to be used.
737 - 002 - 25.10.2018 Servicing data - 11

(x2) 1 Nm
(x2) 1 Nm
12 - Servicing data 737 - 002 - 25.10.2018

3.9 Servicing data LiRX/iRX 20174900446-
(x2) 1 Nm
(x2) 1 Nm
737 - 002 - 25.10.2018 Servicing data - 13

3.10 Servicing data LiR, LiRX/iRX
(x4) 2 ~ 3 Nm 4 mm
(x6) 3 ~ 4 Nm 4 mm
(x3) 2 ~ 3 Nm 4 mm
3 ~ 4 Nm 4 mm
3 ~ 4 Nm 4 mm
(x4) 1 Nm
14 - Servicing data 737 - 002 - 25.10.2018

3.11 Servicing data LiC/iC
* Tightening torque during inspection: 52 ft/lb (2.5 Nm).
8 ~ 12 Nm 19 mm
10 mm
(x4) 3 ~ 4 Nm* 4 mm
(x4) 2,5 ~ 3 Nm 4 mm
5 ~ 6 Nm 4 mm
(x4) 2,5 ~ 3 Nm 4 mm
737 - 002 - 25.10.2018 Servicing data - 15

3.12 Servicing data LiC/iC
(x2) 1 Nm
(x2) 1 Nm
16 - Servicing data 737 - 002 - 25.10.2018

3.13 Trimmer line replacement
"Clic"
123
5
67
9
6,0 m
18'
4
8
3,05 m
9'
2,0 mm-2,4 mm 0,080"
10 cm
4"
6"
15 cm
T25B Li-ion
US only 2,0 mm
737 - 002 - 25.10.2018 Servicing data - 17

4 Servicing tools
4.1 Diagnostic tools
CST
INSTRUCTION
4.1.1 Common service tool
The common service tool (CST) tool 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.
Pos. Description Used with Order No.
1 Diagnostic Tool Kit Diagnosis and troubleshooting 583 89 71-01
2 Adapter cable for battery products Supplement/upgrade for Engine Diagnostic
Tool - AutoTune™ (576 69 23-01)
579 62 13-01
18 - Servicing tools 737 - 002 - 25.10.2018

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 To replace a trimmer line cutter
Always replace a worn trimmer line cutter with a new
one.
1. Remove the 2 screws and replace the trimmer line
cutter.
5.3 To replace the trimmer head
Note: To increase the life and quality of the trimmer line
soak it in water for 1-2 days.
1. Push the clips on the trimmer head and remove the
trimmer head and trimmer line.
2. Pull out the line chute assembly.
3. Remove the nut that holds the trimmer head and the
drive disc.
4. Replace the trimmer head.
5. Install the nut.
6. Install the line chute assembly.
7. Install the trimmer head.
737 - 002 - 25.10.2018 Repair instructions - 19

5.4 To change the keypad
CAUTION: Do not bend the keypad.
CAUTION: The cable that is connected the
keypad is very easily damaged.
1. Disassemble the operating handle. See Operating
handle on page 37 .
2. Disconnect the cable from the keypad.
3. Clean the surface where the keypad is attached.
4. Make sure that the temperature is minimum 15°C.
Make sure that the temperature of the surface where
the keypad is attached does not change more than
±3°C from the ambient temperature.
>15°C
5. Remove the protective tape from the new keypad
and put it on the holder. Apply pressure to the
keypad, 10 N/cm².
>10 sec
10 N/cm
2
5.5 To replace the EMC filter
1. Disconnect the wires (A, grey), (B, black) and (C,
red) from the motor and remove them from the EMC
filter (D).
A
C
D
B
2. Put the wires 2 times through the EMC filter (D).
Note: Always replace a damaged EMC filter with a
new one.
3. Connect the wires to the control unit with (A, grey) at
the top, (B, black) in the middle and (C, red) at the
bottom.
Note: No EMC filter on products LiLX/iLX, LiRX/iRX
201814XXXXX
20 - Repair instructions 737 - 002 - 25.10.2018